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search.xml
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<?xml version="1.0" encoding="utf-8"?>
<search>
<entry>
<title>模型软删除修改</title>
<link href="/softDelete.html"/>
<url>/softDelete.html</url>
<content type="html"><![CDATA[<p>  由于框架底层自带的软删除默认使用的是删除时间（默认字段名deleted_at）作来标记某条记录是否已被删除。</p><ul><li>存在问题:当正常执行一条查询时，第一个过滤条件就是deleted_at is null, 在mysql数据库中null是无法被建立索引的，所以在数据量大的时候，会造成很严重的查询缓慢。</li><li>解决方案：修改deleted_at 字段类型为int，默认值为0，无符号，不为null，并通过存入时间戳标记是否删除。这里会涉及到模型底层的相关修改。</li></ul><p>在实际开发中，一般是不随意修改框架底层的，所以个人选择重写,将SoftDeletes类和SoftDeletingScope类源码复制修改即可。</p><h4 id="触发原理"><a href="#触发原理" class="headerlink" title="触发原理"></a>触发原理</h4><p>当在任意一个模型中 use SoftDeletes之后，是如何在最终的查询语句里添加deleted_at=0 的,以下面模型为例<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">namespace</span> <span class="title">App</span>;</span><br><span class="line"><span class="keyword">use</span> <span class="title">App</span>\<span class="title">Rewrites</span>\<span class="title">SoftDeletes</span>; <span class="comment">//重写的软删除类</span></span><br><span class="line"><span class="keyword">use</span> <span class="title">Illuminate</span>\<span class="title">Database</span>\<span class="title">Eloquent</span>\<span class="title">Model</span>;</span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Department</span> <span class="keyword">extends</span> <span class="title">Model</span> </span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"> <span class="keyword">use</span> <span class="title">SoftDeletes</span>;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">protected</span> $primaryKey = <span class="string">'department_id'</span>;</span><br><span class="line"> <span class="keyword">protected</span> $table = <span class="string">'department'</span>;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br><a id="more"></a><br>在Department模型实例化时，通过基类的构造方法中bootIfNotBooted,然后执行boot方法,再触发bootTraits方法。在bootTraits方法中获取模型中用到的trait类，然后循环遍历，判断trait类中是否存在bootClassname的方法,有则执行。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//基类Model</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">(array $attributes = [])</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line">...</span><br><span class="line"> <span class="keyword">$this</span>->bootIfNotBooted();</span><br><span class="line"> ..</span><br><span class="line">}</span><br><span class="line"><span class="keyword">protected</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">bootTraits</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">//获取模型中用到的trait类</span></span><br><span class="line"> <span class="keyword">foreach</span> (class_uses_recursive(get_called_class()) <span class="keyword">as</span> $trait) {</span><br><span class="line"> <span class="comment">// 如果softDelete类中存在bootsoftDelete方法</span></span><br><span class="line"> <span class="keyword">if</span> (method_exists(get_called_class(), $method = <span class="string">'boot'</span>.class_basename($trait))) {</span><br><span class="line"> <span class="comment">//静态调用，执行SoftDeletes中的bootSoftDeletes方法</span></span><br><span class="line"> forward_static_call([get_called_class(), $method]);</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h4 id="bootSoftDeletes"><a href="#bootSoftDeletes" class="headerlink" title="bootSoftDeletes"></a>bootSoftDeletes</h4><p>启用软删除，为当前模型添加一个全局查询SoftDeletingScope, 在Model类中获取一个newQuery时，就会应用这个全局Scope，即执行SoftDeletingScope类上的apply方法。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//SoftDeletes</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">bootSoftDeletes</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">static</span>::addGlobalScope(<span class="keyword">new</span> SoftDeletingScope);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">//Model</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">newQuery</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $builder = <span class="keyword">$this</span>->newQueryWithoutScopes();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->applyGlobalScopes($builder);</span><br><span class="line">}</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">applyGlobalScopes</span><span class="params">($builder)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">foreach</span> (<span class="keyword">$this</span>->getGlobalScopes() <span class="keyword">as</span> $scope) {</span><br><span class="line"> <span class="comment">//应用Scope</span></span><br><span class="line"> $scope->apply($builder, <span class="keyword">$this</span>);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> $builder;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>关于Scope的简单说明，假设User模型上有一个常用的多个条件查询,并定义其为一个scope。这样就可以在该模型上的其他查询上直接‘拼接’scope条件。<br><figure class="highlight clean"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//抽象比喻，非具体实现代码</span></span><br><span class="line">$scope = <span class="keyword">where</span>(<span class="string">'statu1'</span>,<span class="number">1</span>)-><span class="keyword">where</span>(<span class="string">'status2'</span>,<span class="number">2</span>)-><span class="keyword">where</span>(<span class="string">'status3'</span>,<span class="number">3</span>);</span><br><span class="line"></span><br><span class="line">User::<span class="keyword">where</span>(<span class="string">'user_id'</span>,<span class="number">1</span>)->$scope();</span><br></pre></td></tr></table></figure><br>执行apply方法，使用了软删除scope。这里的是重写后的代码。源码使用的whereNull(‘deleted_at’)查询。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">apply</span><span class="params">(Builder $builder, Model $model)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">//源码 whereNull($model->getQualifiedDeletedAtColumn())</span></span><br><span class="line"> $builder->where($model->getQualifiedDeletedAtColumn(),<span class="number">0</span>);</span><br><span class="line"> <span class="keyword">$this</span>->extend($builder);</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>我们要的目的很明确，在使用软删除的模型上都加上where(‘deleted_at’,0)条件。下面修改SoftDeletingScope中的所有相关查询条件:<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//SoftDeletingScope类</span></span><br><span class="line"><span class="comment">//时间格式统一使用当前时间戳</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">extend</span><span class="params">(Builder $builder)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line">...</span><br><span class="line"> <span class="keyword">return</span> $builder->update([</span><br><span class="line"> $column => time(), <span class="comment">//修改</span></span><br><span class="line"> ]);</span><br><span class="line"> ....</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">//软删除数据恢复</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">addRestore</span><span class="params">(Builder $builder)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line">...</span><br><span class="line"> <span class="keyword">return</span> $builder->update([$builder->getModel()->getDeletedAtColumn() => <span class="number">0</span>]);</span><br><span class="line"> ...</span><br><span class="line">}</span><br><span class="line"><span class="comment">//只查询被软删除的数据</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">addOnlyTrashed</span><span class="params">(Builder $builder)</span></span></span><br><span class="line"><span class="function"></span>{...</span><br><span class="line"> $builder->getQuery()->where($model->getQualifiedDeletedAtColumn(),<span class="string">'>'</span>,<span class="number">0</span>);</span><br><span class="line"> ...</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">//SoftDelete类,当执行模型的delete()方法时,实则执行runSoftDelete</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">runSoftDelete</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $query = <span class="keyword">$this</span>->newQueryWithoutScopes()->where(<span class="keyword">$this</span>->getKeyName(), <span class="keyword">$this</span>->getKey());</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->{<span class="keyword">$this</span>->getDeletedAtColumn()} = $time = time(); </span><br><span class="line"></span><br><span class="line"> $query->update([<span class="keyword">$this</span>->getDeletedAtColumn() => time()]); <span class="comment">// 更新时间戳</span></span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h4 id="withTrash修复"><a href="#withTrash修复" class="headerlink" title="withTrash修复"></a>withTrash修复</h4><p>当修改完毕后，当使用模型上的delete、get、onlyTrashed等方法这些都是没有问题，除了withTrash 方法。用一个实际查询举例<br><figure class="highlight clean"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">Department::withTrash()-><span class="keyword">where</span>(<span class="string">'id'</span>,<span class="string">'<'</span>,<span class="number">9</span>)->get()</span><br><span class="line"><span class="comment">//执行流程与前者是不同的,但结果一样。</span></span><br><span class="line">Department::<span class="keyword">where</span>(<span class="string">'id'</span>,<span class="string">'<'</span>,<span class="number">9</span>)->withTrash()->get()</span><br></pre></td></tr></table></figure></p><p>当执行new static实例化模型时，软删除scope（ 即where(deleted_at,0) ）就已经被加上去了。由于我们需要查询所有数据，包括被标记为已删除的数据，所有需要把查询条件中的deleted_at=0去掉。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//SoftDeletingScope</span></span><br><span class="line"><span class="comment">//前者，直接执行SoftDelete类上的withTrashed方法，获取当前模型实例，并移除软删除scope</span></span><br><span class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">withTrashed</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> <span class="keyword">return</span> (<span class="keyword">new</span> <span class="keyword">static</span>)->newQueryWithoutScope(<span class="keyword">new</span> SoftDeletingScope);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">newQueryWithoutScope</span><span class="params">($scope)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->getGlobalScope($scope)->remove($builder = <span class="keyword">$this</span>->newQuery(), <span class="keyword">$this</span>);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> $builder;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">//后者实则是执行Eloquent\Builder上的withTrash方法，</span></span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__call</span><span class="params">($method, $parameters)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">//macros数组的值则是在SoftDeletingScope中执行apply方法里的extend方法，储存的</span></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">isset</span>(<span class="keyword">$this</span>->macros[$method])) {</span><br><span class="line"> array_unshift($parameters, <span class="keyword">$this</span>);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> call_user_func_array(<span class="keyword">$this</span>->macros[$method], $parameters);</span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"><span class="comment">//macros数组来源,这里便为withTrashed绑定了一个回调并存放在macros</span></span><br><span class="line"><span class="comment">//SoftDeletingScope</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">addWithTrashed</span><span class="params">(Builder $builder)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> $builder->macro(<span class="string">'withTrashed'</span>, <span class="function"><span class="keyword">function</span> <span class="params">(Builder $builder)</span> </span>{</span><br><span class="line"> <span class="keyword">$this</span>->remove($builder, $builder->getModel());</span><br><span class="line"> <span class="keyword">return</span> $builder;</span><br><span class="line"> });</span><br><span class="line"> }</span><br><span class="line"></span><br></pre></td></tr></table></figure><br>两种执行的最终结果都是执行了SoftDeletingScope中的remove方法,传入Eloquent\Builder,Department 作为参数,其目的就是去掉Builder里的软删除查询条件。<br>模型的最终数据，是通过Database\Query\Builder执行编译完成的查询语句来获取的。而查询语句的生成原理在这里很重要。<br><figure class="highlight awk"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br></pre></td><td class="code"><pre><span class="line"><span class="regexp">//</span>比如执行如下代码,分别对比源码及修改后的语句生成方式</span><br><span class="line"><span class="variable">$res</span> = Department::where(<span class="string">'id'</span>,<span class="string">'<'</span>,<span class="number">0</span>)->get();</span><br><span class="line"><span class="regexp">//</span>在语句完成前,对比Query\Builder中wheres和bindings属性数据</span><br><span class="line"></span><br><span class="line"><span class="regexp">//</span>修改源码之前</span><br><span class="line"><span class="regexp">//</span> wheres: array:<span class="number">1</span> [▼</span><br><span class="line"> <span class="regexp">//</span> <span class="number">0</span> => array:<span class="number">3</span> [▼</span><br><span class="line"> <span class="regexp">//</span> <span class="string">"type"</span> => <span class="string">"Null"</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"column"</span> => <span class="string">"department.deleted_at"</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"boolean"</span> => <span class="string">"and"</span></span><br><span class="line"> <span class="regexp">//</span> ],</span><br><span class="line"> <span class="regexp">//</span> <span class="number">1</span> => array:<span class="number">5</span> [▼</span><br><span class="line"> <span class="regexp">//</span> <span class="string">"type"</span> => <span class="string">"Basic"</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"column"</span> => <span class="string">"department_id"</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"operator"</span> => <span class="string">"<"</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"value"</span> => <span class="number">9</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"boolean"</span> => <span class="string">"and"</span></span><br><span class="line"> <span class="regexp">//</span> ]</span><br><span class="line"> <span class="regexp">//</span> ]</span><br><span class="line"> <span class="regexp">//</span> bindings: [ <span class="number">0</span> => <span class="number">9</span> ]</span><br><span class="line"></span><br><span class="line"> <span class="regexp">//</span>生成的预处理语句</span><br><span class="line"> <span class="string">"select * from department where department.deleted_at is null and department_id < ?"</span></span><br><span class="line"></span><br><span class="line"> <span class="regexp">//</span>withTrashed, 直接移除wheres中的第一个数组</span><br><span class="line"> <span class="string">"select * from department where department_id < ?"</span></span><br><span class="line"></span><br><span class="line"> <span class="regexp">//</span>修改源码之后</span><br><span class="line"> <span class="regexp">//</span> wheres: array:<span class="number">1</span> [▼</span><br><span class="line"> <span class="regexp">//</span> <span class="number">0</span> => array:<span class="number">3</span> [▼</span><br><span class="line"> <span class="regexp">//</span> <span class="string">"type"</span> => <span class="string">"Basic"</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"column"</span> => <span class="string">"department.deleted_at"</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"operator"</span> => <span class="string">"<"</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"value"</span> => <span class="number">9</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"boolean"</span> => <span class="string">"and"</span></span><br><span class="line"> <span class="regexp">//</span> ],</span><br><span class="line"> <span class="regexp">//</span> <span class="number">1</span> => array:<span class="number">5</span> [▼</span><br><span class="line"> <span class="regexp">//</span> <span class="string">"type"</span> => <span class="string">"Basic"</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"column"</span> => <span class="string">"department_id"</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"operator"</span> => <span class="string">"<"</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"value"</span> => <span class="number">9</span></span><br><span class="line"> <span class="regexp">//</span> <span class="string">"boolean"</span> => <span class="string">"and"</span></span><br><span class="line"> <span class="regexp">//</span> ]</span><br><span class="line"> <span class="regexp">//</span> ]</span><br><span class="line"> <span class="regexp">//</span> bindings: [ <span class="number">0</span> => <span class="number">0</span> , <span class="number">1</span>=> <span class="number">9</span>] </span><br><span class="line"></span><br><span class="line"> <span class="regexp">//</span>生成的预处理语句</span><br><span class="line"> <span class="string">"select * from department where department.deleted_at = ? and department_id < ?"</span></span><br><span class="line"></span><br><span class="line"> <span class="regexp">//</span>withTrashed, 直接移除wheres中的第一个数组, </span><br><span class="line"> <span class="string">"select * from department where department_id < ?"</span></span><br><span class="line"></span><br><span class="line"> <span class="regexp">//</span>这里必须同时移除bindings数组中的第一个元素，否则执行的会是department_id<<span class="number">0</span></span><br><span class="line"></span><br></pre></td></tr></table></figure></p><p><font color="red">必须同时去掉软删除对应的where条件和bindings参数</font>最终修改结果如下:<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">remove</span><span class="params">(Builder $builder, Model $model)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $column = $model->getQualifiedDeletedAtColumn();</span><br><span class="line"></span><br><span class="line"> $query = $builder->getQuery(); <span class="comment">//Database\Query\Builder</span></span><br><span class="line"></span><br><span class="line"> <span class="comment">//其实就是array_filter()实现 </span></span><br><span class="line"> $query->wheres = collect($query->wheres)->reject(<span class="function"><span class="keyword">function</span> <span class="params">($where)</span> <span class="title">use</span> <span class="params">($column, $query)</span> </span>{</span><br><span class="line"> <span class="comment">//遍历wheres查询条件，并去掉软删除对应条件和绑定的参数</span></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->isSoftDeleteConstraint($where, $column, $query);</span><br><span class="line"> })->values()->all();</span><br><span class="line">}</span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">isSoftDeleteConstraint</span><span class="params">(array $where, $column, Query $query)</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> $isSoft = $where[<span class="string">'value'</span>] === <span class="number">0</span> && $where[<span class="string">'column'</span>] == $column;</span><br><span class="line"> <span class="keyword">if</span>($isSoft){</span><br><span class="line"> $bindings = $query->getRawBindings()[<span class="string">'where'</span>];</span><br><span class="line"> array_shift($bindings);</span><br><span class="line"> <span class="comment">//重新设置where中的绑定数据</span></span><br><span class="line"> $query->setBindings($bindings);</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> $isSoft;</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
</entry>
<entry>
<title>Eloquent模型类</title>
<link href="/Eloquent.html"/>
<url>/Eloquent.html</url>
<content type="html"><![CDATA[<p>关于模型类的理解，其实模型类是建立在DB类的QueryBuilder上面，将其查询结果赋值在模型的属性上，一条查询结果，便是独立的模型类。这里依然是举例子作分析。</p><h4 id="基本查询"><a href="#基本查询" class="headerlink" title="基本查询"></a>基本查询</h4><p>首先以 User::where(‘user_id’,1)->get() 作为基本分析。所有的模型类都是继承基类Model的,当执行where 方法时，本质都是执行的__call 方法，而最终执行的是 newQuery()->where。</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="comment">//实例化调用 (new User())->where</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__call</span><span class="params">($method, $parameters)</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> <span class="keyword">if</span> (in_array($method, [<span class="string">'increment'</span>, <span class="string">'decrement'</span>])) {</span><br><span class="line"> <span class="keyword">return</span> call_user_func_array([<span class="keyword">$this</span>, $method], $parameters);</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//获取模型的查询列</span></span><br><span class="line"> $query = <span class="keyword">$this</span>->newQuery();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> call_user_func_array([$query, $method], $parameters);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">//静态调用user::where</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">__callStatic</span><span class="params">($method, $parameters)</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> $instance = <span class="keyword">new</span> <span class="keyword">static</span>;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> call_user_func_array([$instance, $method], $parameters);</span><br><span class="line">}</span><br><span class="line"></span><br></pre></td></tr></table></figure><a id="more"></a><p>执行newQuery()方法，获取模型的查询类。注意点 newBaseQueryBuilder实质就是<font color="red">Illuminate\Database\Query\Builder类</font>，用来将获取真正的查询结果集。这里将DB类的Query\Builder传入newEloquentBuilder()方法中,返回模型的Eloquent\Builder类<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">newQuery</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">//或取Eloquent\Builder类</span></span><br><span class="line"> $builder = <span class="keyword">$this</span>->newQueryWithoutScopes();</span><br><span class="line"></span><br><span class="line"> <span class="comment">//应用全局Scope查询域，这里主要是软删除</span></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->applyGlobalScopes($builder);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">newQueryWithoutScopes</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">//获取Eloquent\Builder类</span></span><br><span class="line"> $builder = <span class="keyword">$this</span>->newEloquentBuilder(</span><br><span class="line"> <span class="comment">//Query\Builder</span></span><br><span class="line"> <span class="keyword">$this</span>->newBaseQueryBuilder()</span><br><span class="line"> );</span><br><span class="line"> <span class="comment">//储存with数据</span></span><br><span class="line"> <span class="comment">//Eloquent\Builder中的model属性设置为当前User类，并</span></span><br><span class="line"> <span class="keyword">return</span> $builder->setModel(<span class="keyword">$this</span>)->with(<span class="keyword">$this</span>->with);</span><br><span class="line">}</span><br><span class="line"></span><br></pre></td></tr></table></figure><br>然后执行Eloquent\Builder中的where(‘user_id’,1)方法，可以清楚的看到就是执行当前模型中所绑定的Query\Builder类的where方法(这里实际上就是DB类的查询原理了)。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">where</span><span class="params">($column, $operator = null, $value = null, $boolean = <span class="string">'and'</span>)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> ....</span><br><span class="line"> call_user_func_array([<span class="keyword">$this</span>->query, <span class="string">'where'</span>], func_get_args());</span><br><span class="line"> ....</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>最后执行get方法，当getModels方法执行完毕时，结果集就已经获取完毕。 getModels主要做了三件事： </p><ul><li>$this->query->get ,直接获取数据集</li><li>获取当前模型对应的连接名 </li><li>将数据写入User模型里相关属性里,hydrate方法返回一个框架封装的Collection集合类,调用集合的all方法则将集合转为数组（Note: user模型类不变）</li><li></li></ul><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//获取结果集</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">get</span><span class="params">($columns = [<span class="string">'*'</span>])</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> $models = <span class="keyword">$this</span>->getModels($columns);</span><br><span class="line"> <span class="comment">//with 查询</span></span><br><span class="line"> <span class="keyword">if</span> (count($models) > <span class="number">0</span>) {</span><br><span class="line"> <span class="comment">//with多个模型数据组装,</span></span><br><span class="line"> $models = <span class="keyword">$this</span>->eagerLoadRelations($models);</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->model->newCollection($models);</span><br><span class="line"> }</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">getModels</span><span class="params">($columns = [<span class="string">'*'</span>])</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $results = <span class="keyword">$this</span>->query->get($columns);</span><br><span class="line"></span><br><span class="line"> $connection = <span class="keyword">$this</span>->model->getConnectionName();</span><br><span class="line"></span><br><span class="line"> <span class="comment">//hydrate方法返回一个Collection类</span></span><br><span class="line"> <span class="comment">// Collection {</span></span><br><span class="line"> <span class="comment">// items: array:1 [</span></span><br><span class="line"> <span class="comment">// 0 => User { }</span></span><br><span class="line"> <span class="comment">// ]</span></span><br><span class="line"> <span class="comment">//}</span></span><br><span class="line"> <span class="comment">//</span></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->model->hydrate($results, $connection)->all();</span><br><span class="line">}</span><br></pre></td></tr></table></figure><h4 id="with查询"><a href="#with查询" class="headerlink" title="with查询"></a>with查询</h4><p>User::where(‘user_id’,1)->with(‘depa’)->get()与 User::with(‘depa’)->where(‘user_id’,1)->get()执行结果虽然一致，但流程是不同的。</p><p>前者执行的是Eloquent\Builder上的with方法<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">with</span><span class="params">($relations)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> <span class="keyword">if</span> (is_string($relations)) {</span><br><span class="line"> $relations = func_get_args();</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> $eagers = <span class="keyword">$this</span>->parseRelations($relations);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->eagerLoad = array_merge(<span class="keyword">$this</span>->eagerLoad, $eagers);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>;</span><br><span class="line"> }</span><br></pre></td></tr></table></figure><br>后者执行的Eloquent\Model上的with方法,但最终还是通过获取newQuery实例(即 Eloquent\Builder)，然后继续执行with方法<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">with</span><span class="params">($relations)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> (is_string($relations)) {</span><br><span class="line"> $relations = func_get_args();</span><br><span class="line"> }</span><br><span class="line"> $instance = <span class="keyword">new</span> <span class="keyword">static</span>;</span><br><span class="line"> <span class="keyword">return</span> $instance->newQuery()->with($relations);</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>$this->eagerLoad 将需要渴求式加载的模型方法存入当前Builder类中,这里的eagerLoad实际上是一个由关系名对应的空闭包组成的数组<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">$this</span>->eagerLoad = [</span><br><span class="line"> <span class="string">'depa'</span>=> <span class="function"><span class="keyword">function</span><span class="params">()</span></span>{ },</span><br><span class="line"> ......</span><br><span class="line"> ]</span><br></pre></td></tr></table></figure><br>eagerLoadRelations方法中的loadRelation方法，这里传入的就是[User], ‘depa’, function(){} 这三个参数。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">loadRelation</span><span class="params">(array $models, $name, Closure $constraints)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"></span><br><span class="line"> $relation = <span class="keyword">$this</span>->getRelation($name);</span><br><span class="line"> <span class="comment">// 为关联关系限定查询条件 </span></span><br><span class="line"> $relation->addEagerConstraints($models); </span><br><span class="line"></span><br><span class="line"> call_user_func($constraints, $relation);</span><br><span class="line"></span><br><span class="line"> <span class="comment">//为当前模型设置relations 数组，默认为null。 这里是relations['depa'] =null,</span></span><br><span class="line"> $models = $relation->initRelation($models, $name);</span><br><span class="line"></span><br><span class="line"> <span class="comment">//通过关联关系，获取查询结果集</span></span><br><span class="line"> $results = $relation->getEager();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> $relation->match($models, $results, $name);</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><p>首先getRelation方法，根据User中定义的depa关联方法，返回一个hasOne的关联模型类（例子中用的hasOne）<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">getRelation</span><span class="params">($name)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"></span><br><span class="line"> $relation = Relation::noConstraints(<span class="function"><span class="keyword">function</span> <span class="params">()</span> <span class="title">use</span> <span class="params">($name)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->getModel()->$name();</span><br><span class="line"> });</span><br><span class="line"> <span class="comment">//是否嵌套关联,如with('depa.creator')</span></span><br><span class="line"> $nested = <span class="keyword">$this</span>->nestedRelations($name);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (count($nested) > <span class="number">0</span>) {</span><br><span class="line"> $relation->getQuery()->with($nested);</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> $relation;</span><br><span class="line">}</span><br><span class="line"><span class="comment">//返回结果</span></span><br><span class="line">HasOne { </span><br><span class="line"> foreignKey: <span class="string">"department.department_id"</span></span><br><span class="line"> localKey: <span class="string">"depa_id"</span></span><br><span class="line"> query: Builder {}</span><br><span class="line"> <span class="keyword">parent</span>: User {}</span><br><span class="line"> related: Department {}</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>getEager方法,执行get并触发魔术方法，实质是执行Eloquent\Builder->get()方法。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">getEager</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->get();</span><br><span class="line">}</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__call</span><span class="params">($method, $parameters)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $result = call_user_func_array([<span class="keyword">$this</span>->query, $method], $parameters);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> ($result === <span class="keyword">$this</span>->query) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>;</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> $result;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>为关联关系限定查询条件 $relation->addEagerConstraints($models)。我们的例子中with(‘depa’)在实际查询中，对应的是where(depa_id = User->depa_id),那么这个查询的限定就是通过addEagerConstraints实现的<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">addEagerConstraints</span><span class="params">(array $models)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">//获取外键depa_id, 获取所有models(可以是多个User模型)中对应的关联键中的值,相当于array_column('depa_id',[User,User])</span></span><br><span class="line"><span class="comment">//执行 whereIn('depa_id',[1,2,3...]);</span></span><br><span class="line"> <span class="keyword">$this</span>->query->whereIn(<span class="keyword">$this</span>->foreignKey, <span class="keyword">$this</span>->getKeys($models, <span class="keyword">$this</span>->localKey));</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><p>最终将获取的数据写入当前User模型的relations 数组中。</p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> Eloquent模型 </tag>
</tags>
</entry>
<entry>
<title>DatabaseServiceProvider</title>
<link href="/database.html"/>
<url>/database.html</url>
<content type="html"><![CDATA[<p>提供数据库连接及DB操作,同时为模型(Eloquent)设置Connection获取方式</p><h4 id="boot"><a href="#boot" class="headerlink" title="boot"></a>boot</h4><p>这里为 <font color="red">Model模型类</font> 设置了 <font color="red">db连接获取方式</font> 和事件处理类<br><figure class="highlight css"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="selector-tag">public</span> <span class="selector-tag">function</span> <span class="selector-tag">boot</span>()</span><br><span class="line">{</span><br><span class="line"> <span class="attribute">Model</span>::<span class="built_in">setConnectionResolver</span>($this->app[<span class="string">'db'</span>]);</span><br><span class="line"></span><br><span class="line"> <span class="attribute">Model</span>::<span class="built_in">setEventDispatcher</span>($this->app[<span class="string">'events'</span>]);</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br><a id="more"></a></p><h4 id="register"><a href="#register" class="headerlink" title="register"></a>register</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">register</span><span class="params">()</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> Model::clearBootedModels(); <span class="comment">//清楚已经解析完毕的Model</span></span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->registerEloquentFactory(); <span class="comment">//注册模型工厂类</span></span><br><span class="line"></span><br><span class="line"> <span class="comment">//$this->registerQueueableEntityResolver(); //未使用过</span></span><br><span class="line"></span><br><span class="line"> <span class="comment">//注册db.factory,返回对应的</span></span><br><span class="line"> <span class="keyword">$this</span>->app->singleton(<span class="string">'db.factory'</span>, <span class="function"><span class="keyword">function</span> <span class="params">($app)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> ConnectionFactory($app);</span><br><span class="line"> });</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->app->singleton(<span class="string">'db'</span>, <span class="function"><span class="keyword">function</span> <span class="params">($app)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> DatabaseManager($app, $app[<span class="string">'db.factory'</span>]);</span><br><span class="line"> });</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->app->bind(<span class="string">'db.connection'</span>, <span class="function"><span class="keyword">function</span> <span class="params">($app)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> $app[<span class="string">'db'</span>]->connection();</span><br><span class="line"> });</span><br><span class="line"> }</span><br></pre></td></tr></table></figure><p>简单的查询 流程图，如 DB::table(‘user’)->where(‘id’,1)->get()<br><img src="/images/db_process.png"></p><h4 id="源码流程解析"><a href="#源码流程解析" class="headerlink" title="源码流程解析"></a>源码流程解析</h4><p>首先获取 DatabaseManager类, 执行table方法时，触发__call。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">($app, ConnectionFactory $factory)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->app = $app;</span><br><span class="line"> <span class="keyword">$this</span>->factory = $factory; <span class="comment">// 连接工厂类</span></span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">//执行table('user')</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__call</span><span class="params">($method, $parameters)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">return</span> call_user_func_array([<span class="keyword">$this</span>->connection(), $method], $parameters);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">connection</span><span class="params">($name = null)</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> <span class="comment">//解析连接名，默认读取database.php配置下的default对应的连接名</span></span><br><span class="line"></span><br><span class="line"> <span class="keyword">list</span>($name, $type) = <span class="keyword">$this</span>->parseConnectionName($name);</span><br><span class="line"></span><br><span class="line"> <span class="comment">//这里$name= mysql, $type=null</span></span><br><span class="line"> <span class="keyword">if</span> (! <span class="keyword">isset</span>(<span class="keyword">$this</span>->connections[$name])) {</span><br><span class="line"> <span class="comment">//根据配置中的连接名 ，获取连接类MysqlConnection</span></span><br><span class="line"> $connection = <span class="keyword">$this</span>->makeConnection($name); </span><br><span class="line"></span><br><span class="line"> <span class="comment">//为连接类设置读、写PDO</span></span><br><span class="line"> <span class="keyword">$this</span>->setPdoForType($connection, $type);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->connections[$name] = <span class="keyword">$this</span>->prepare($connection);</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//保存当前连接</span></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->connections[$name];</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>这里的makeConnection方法返回一个mysqlConnection类（继承Connection）， 这个类设置了<font color="red">PDO连接、语法编译类QueryGrammar、语句执行类PostProcessor。</font><br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">(PDO $pdo, $database = <span class="string">''</span>, $tablePrefix = <span class="string">''</span>, array $config = [])</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->pdo = $pdo;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->database = $database;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->tablePrefix = $tablePrefix;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->config = $config;</span><br><span class="line"> <span class="comment">//语法编译</span></span><br><span class="line"> <span class="keyword">$this</span>->useDefaultQueryGrammar();</span><br><span class="line"> <span class="comment">//语句执行</span></span><br><span class="line"> <span class="keyword">$this</span>->useDefaultPostProcessor();</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><p>DB::table(‘user’)执行后的返回值是 Illuminate\Database\Query\builder类<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">table</span><span class="params">($table)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->query()->from($table);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">query</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> QueryBuilder(</span><br><span class="line"> <span class="keyword">$this</span>, <span class="keyword">$this</span>->getQueryGrammar(), <span class="keyword">$this</span>->getPostProcessor()</span><br><span class="line"> );</span><br><span class="line">}</span><br><span class="line"></span><br></pre></td></tr></table></figure><br>之后所有的where、whereIn、join等都是进行原生Sql语句的组装,并在最终执行runSelect返回查询结果集。其查询方式是通过预处理实现的。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">runSelect</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="comment">//生成预处理语句，如</span></span><br><span class="line"> <span class="comment">// select * from `users` where `user_id` = ? or `depa_id` = ?</span></span><br><span class="line"> <span class="comment">//获取绑定的参数（数组）</span></span><br><span class="line"> <span class="comment">// [ 1, 2]</span></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->connection->select(<span class="keyword">$this</span>->toSql(), <span class="keyword">$this</span>->getBindings(), ! <span class="keyword">$this</span>->useWritePdo);</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> DatabaseServiceProvider </tag>
<tag> DB </tag>
<tag> Eloquent </tag>
</tags>
</entry>
<entry>
<title>Event-队列</title>
<link href="/event-queue.html"/>
<url>/event-queue.html</url>
<content type="html"><![CDATA[<div class="note success"><p>当事件监听了实现了ShouldQueue时，该事件就会通过队列进行处理。</p></div><p>根据已有事件监听者，在执行Dipatcher是，在队列(redis)里为其添加该监听者的序列化数据。在任务一条条执行(出队列)，将数据解析，执行对应监听者类的方法(默认handler方法)。</p><h5 id="ShouldQueue"><a href="#ShouldQueue" class="headerlink" title="ShouldQueue"></a>ShouldQueue</h5><figure class="highlight actionscript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//实现ShouldQueue接口</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">TestListener1</span> <span class="keyword">implements</span> <span class="title">ShouldQueue</span></span>{</span><br><span class="line"> <span class="comment">//</span></span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">test</span><span class="params">()</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> </span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><a id="more"></a><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//Dipatcher执行makeListener</span></span><br><span class="line"> <span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">createClassCallable</span><span class="params">($listener, $container)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line">...</span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->handlerShouldBeQueued($class)) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->createQueuedHandlerCallable($class, $method);</span><br><span class="line"> } </span><br><span class="line"> ...</span><br><span class="line">}</span><br><span class="line"><span class="comment">//创建队列的操作回调</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">createQueuedHandlerCallable</span><span class="params">($class, $method)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="function"><span class="keyword">function</span> <span class="params">()</span> <span class="title">use</span> <span class="params">($class, $method)</span> </span>{</span><br><span class="line"> $arguments = <span class="keyword">$this</span>->cloneArgumentsForQueueing(func_get_args());</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (method_exists($class, <span class="string">'queue'</span>)) {</span><br><span class="line"> <span class="comment">//自定义的队列操作方法</span></span><br><span class="line"> <span class="keyword">$this</span>->callQueueMethodOnHandler($class, $method, $arguments);</span><br><span class="line"> } <span class="keyword">else</span> {</span><br><span class="line"> <span class="keyword">$this</span>->resolveQueue()->push(<span class="string">'Illuminate\Events\CallQueuedHandler@call'</span>, [</span><br><span class="line"> <span class="string">'class'</span> => $class, <span class="string">'method'</span> => $method, <span class="string">'data'</span> => serialize($arguments),</span><br><span class="line"> ]);</span><br><span class="line"> }</span><br><span class="line"> };</span><br><span class="line">}</span><br></pre></td></tr></table></figure><h5 id="resolveQueue"><a href="#resolveQueue" class="headerlink" title="resolveQueue"></a>resolveQueue</h5><p>resolveQueue通过执行 $app->make(‘Illuminate\Contracts\Queue\Factory’),实质获取QueueManager类。也就是执行了容器最初绑定event时，通过setQueueResolver为event赋予的闭包。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">$this</span>->app->singleton(<span class="string">'events'</span>, <span class="function"><span class="keyword">function</span> <span class="params">($app)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> (<span class="keyword">new</span> Dispatcher($app))->setQueueResolver(</span><br><span class="line"> <span class="comment">//执行下面的闭包</span></span><br><span class="line"> <span class="function"><span class="keyword">function</span> <span class="params">()</span> <span class="title">use</span> <span class="params">($app)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> $app->make(<span class="string">'Illuminate\Contracts\Queue\Factory'</span>);</span><br><span class="line"> });</span><br><span class="line">});</span><br></pre></td></tr></table></figure><br>说白了就是讲当前监听者类序列化， 将类名、执行方法、序列化后的数据存入队列，这里以redis为例。如执行event(new \App\Event\TestEvent())时,会在redis产生如下的数据:<br><figure class="highlight stata"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//redis_key</span></span><br><span class="line">在默认<span class="keyword">DB</span>下 queues下 的 'queues:default'中</span><br><span class="line"><span class="comment">//数据</span></span><br><span class="line">{</span><br><span class="line"> <span class="string">"job"</span>: <span class="string">"Illuminate\\Events\\CallQueuedHandler@call"</span>,</span><br><span class="line"> <span class="string">"data"</span>: {</span><br><span class="line"> <span class="string">"class"</span>: <span class="string">"App\\Listeners\\TestListener1"</span>,</span><br><span class="line"> <span class="string">"method"</span>: <span class="string">"test"</span>,</span><br><span class="line"> <span class="string">"data"</span>: <span class="string">"a:1:{i:0;O:20:\"</span><span class="keyword">App</span>\\Events\\TestEvent\<span class="string">":0:{}}"</span></span><br><span class="line"> },</span><br><span class="line"> <span class="string">"id"</span>: <span class="string">"ihS5FJPgxxFOUdg7TxmWjErmmY2Q6PTk"</span>,</span><br><span class="line"> <span class="string">"attempts"</span>: 1</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>在实际开发过程有些事件的触发后不需要即时处理，那么就先放进队列，然后在出队列进行逐个处理，比如系统通知等。看到上面的json字符串，我们大概都能想到它的处理流程，最终其实也是执行了App\Listeners\TestListener1下的test方法。<br>关于出队列的处理，我们知道在命令行通过执行php artisan queue:work 就可以将这些队列任务处理完毕。</p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> event队列 </tag>
</tags>
</entry>
<entry>
<title>queue之Artisan</title>
<link href="/queue-work.html"/>
<url>/queue-work.html</url>
<content type="html"><![CDATA[<div class="note success"><p>关于事件出队列的处理，即控制台的queue:work命令的原理解析。</p></div><h5 id="artisan命令写入"><a href="#artisan命令写入" class="headerlink" title="artisan命令写入"></a>artisan命令写入</h5><p>要执行queue:work命令，首先命令在artisan中必须是存在，那么它是在哪里写入的呢<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// QueueServiceProvider extends ServiceProvider</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">registerWorkCommand</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->app->singleton(<span class="string">'command.queue.work'</span>, <span class="function"><span class="keyword">function</span> <span class="params">($app)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> WorkCommand($app[<span class="string">'queue.worker'</span>]);</span><br><span class="line"> });</span><br><span class="line"> <span class="comment">//这里就是写入的地方</span></span><br><span class="line"> <span class="keyword">$this</span>->commands(<span class="string">'command.queue.work'</span>);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">//父类ServiceProvider</span></span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">commands</span><span class="params">($commands)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $commands = is_array($commands) ? $commands : func_get_args();</span><br><span class="line"></span><br><span class="line"> $events = <span class="keyword">$this</span>->app[<span class="string">'events'</span>];</span><br><span class="line"></span><br><span class="line"> $events->listen(<span class="string">'artisan.start'</span>, <span class="function"><span class="keyword">function</span> <span class="params">($artisan)</span> <span class="title">use</span> <span class="params">($commands)</span> </span>{</span><br><span class="line"> $artisan->resolveCommands($commands);</span><br><span class="line"> });</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>除了最底层的基本命令(如 help)，其他命令一般都是在为服务提供者进行注册时进行的命令写入。可以看到在写入命令的同时，也为artisan.start注册了一个事件监听者。这个用途就是在当我们执行命令时，根据字符，解析成具体操作类。<br><a id="more"></a></p><h5 id="命令解析"><a href="#命令解析" class="headerlink" title="命令解析"></a>命令解析</h5><p>现在对 php artisan queue:work [ php 文件名 参数]。进行解析<br>命令行解析流程如下：</p><ul><li>获取artisan实例, Illuminate\Console\Application</li><li>artisan->resolveCommand(‘queue:work’),获取具体Command类</li><li>执行Command类->execute()方法<br>在这个例子中具体的Command实例就是WorkCommand类,然后执行其在这个例子中具体的Command实例就是WorkCommand类->execute()<figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//Illuminate\Console\Application时，进行事件触发处理</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">(Container $laravel, Dispatcher $events, $version)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line">...</span><br><span class="line"> $events->fire(<span class="string">'artisan.start'</span>, [<span class="keyword">$this</span>]);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">//实际是父类(Illuminate\Console\Command)上的方法</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">execute</span><span class="params">(InputInterface $input, OutputInterface $output)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $method = method_exists(<span class="keyword">$this</span>, <span class="string">'handle'</span>) ? <span class="string">'handle'</span> : <span class="string">'fire'</span>;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->laravel->call([<span class="keyword">$this</span>, $method]);</span><br><span class="line">}</span><br></pre></td></tr></table></figure>WorkCommand是没有handle方法的，所以执行fire方法。在执行process可以看到，会现在当前任务的执行尝试次数，如果不满足条件，则按失败处理，并执行相关处理方法<figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">fire</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line">....</span><br><span class="line"> $response = <span class="keyword">$this</span>->runWorker(</span><br><span class="line"> $connection, $queue, $delay, $memory, <span class="keyword">$this</span>->option(<span class="string">'daemon'</span>)</span><br><span class="line"> );</span><br><span class="line"> ....</span><br><span class="line">}</span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">runWorker</span><span class="params">($connection, $queue, $delay, $memory, $daemon = false)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line">....</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->worker->pop(</span><br><span class="line"> $connection, $queue, $delay,</span><br><span class="line"> <span class="keyword">$this</span>->option(<span class="string">'sleep'</span>), <span class="keyword">$this</span>->option(<span class="string">'tries'</span>)</span><br><span class="line"> );</span><br><span class="line">}</span><br><span class="line"><span class="comment">//Illuminate\Queue\Worker</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">process</span><span class="params">($connection, Job $job, $maxTries = <span class="number">0</span>, $delay = <span class="number">0</span>)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> ($maxTries > <span class="number">0</span> && $job->attempts() > $maxTries) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->logFailedJob($connection, $job);</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//通过RedisQueue类获取RedisJob类</span></span><br><span class="line"> $job = <span class="keyword">$this</span>->getNextJob($connection, $queue);</span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"></span><br><span class="line"> $job->fire();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->raiseAfterJobEvent($connection, $job);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> [<span class="string">'job'</span> => $job, <span class="string">'failed'</span> => <span class="keyword">false</span>];</span><br><span class="line"> } <span class="keyword">catch</span> (<span class="keyword">Exception</span> $e) {</span><br><span class="line"> ....</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>按当前例子，这里的Job可以理解为一条redis数据(待处理任务),任务类也是RedisJob类。<figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//一般样本数据</span></span><br><span class="line">{</span><br><span class="line"> <span class="string">"job"</span>: <span class="string">"Illuminate\\Events\\CallQueuedHandler@call"</span>,</span><br><span class="line"> <span class="string">"data"</span>: {</span><br><span class="line"> <span class="string">"class"</span>: <span class="string">"App\\Listeners\\TestListener1"</span>,</span><br><span class="line"> <span class="string">"method"</span>: <span class="string">"test"</span>,</span><br><span class="line"> <span class="string">"data"</span>: <span class="string">"a:1:{i:0;O:20:\"App\\Events\\TestEvent\":0:{}}"</span></span><br><span class="line"> },</span><br><span class="line"> <span class="string">"id"</span>: <span class="string">"ihS5FJPgxxFOUdg7TxmWjErmmY2Q6PTk"</span>,</span><br><span class="line"> <span class="string">"attempts"</span>: <span class="number">1</span></span><br><span class="line">},</span><br><span class="line"><span class="comment">//广播样本数据</span></span><br><span class="line">{</span><br><span class="line"> <span class="string">"job"</span>: <span class="string">"Illuminate\\Broadcasting\\BroadcastEvent"</span>,</span><br><span class="line"> <span class="string">"data"</span>: {</span><br><span class="line"> <span class="string">"event"</span>: <span class="string">"O:20:\"App\\Events\\TestEvent\":0:{}"</span></span><br><span class="line"> },</span><br><span class="line"> <span class="string">"id"</span>: <span class="string">"SGGHgGBWHzJrH8pPZKrXAmaxujdTZJbj"</span>,</span><br><span class="line"> <span class="string">"attempts"</span>: <span class="number">1</span></span><br><span class="line">}</span><br><span class="line"><span class="comment">//将队列数据转为数组</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">fire</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->resolveAndFire(json_decode(<span class="keyword">$this</span>->getRawBody(), <span class="keyword">true</span>));</span><br><span class="line">}</span><br></pre></td></tr></table></figure>resolveAndFire方法,将获取根据job字段值，获取具体操作实例。一般事件默认为Illuminate\Events\CallQueuedHandler@call。<font color="red">parseJob方法，如果没有@method, 则默认method为’fire’</font>，如广播事件则为Illuminate\Broadcasting\BroadcastEvent。 (相当于拼接.‘@fire’)。<figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//基类Illuminate\Queue\Jobs\Job</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">resolveAndFire</span><span class="params">(array $payload)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">list</span>($class, $method) = <span class="keyword">$this</span>->parseJob($payload[<span class="string">'job'</span>]);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->instance = <span class="keyword">$this</span>->resolve($class);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->instance->{$method}(<span class="keyword">$this</span>, <span class="keyword">$this</span>->resolveQueueableEntities($payload[<span class="string">'data'</span>]));</span><br><span class="line">}</span><br></pre></td></tr></table></figure>获取Illuminate\Events\CallQueuedHandler实例，执行该实例的call方法。并将data作为参数传入。<figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">call</span><span class="params">(Job $job, array $data)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $handler = <span class="keyword">$this</span>->setJobInstanceIfNecessary(</span><br><span class="line"> $job, <span class="keyword">$this</span>->container->make($data[<span class="string">'class'</span>])</span><br><span class="line"> );</span><br><span class="line"></span><br><span class="line"> call_user_func_array(</span><br><span class="line"> [$handler, $data[<span class="string">'method'</span>]], unserialize($data[<span class="string">'data'</span>])</span><br><span class="line"> );</span><br><span class="line"> <span class="comment">//清除队列数据</span></span><br><span class="line"> <span class="keyword">if</span> (! $job->isDeletedOrReleased()) {</span><br><span class="line"> $job->delete(); </span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure>这里需要注意的一点是，清除队列中的该条任务，这里清除的实际是reversed有序队列中的备份任务，因为在生产环境中，由于程序错误导致任务无法正常进行是存在的，所以laravel会默认备份。</li></ul>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> artisan控制台 </tag>
<tag> queue:work命令 </tag>
</tags>
</entry>
<entry>
<title>Event-服务</title>
<link href="/event-provider.html"/>
<url>/event-provider.html</url>
<content type="html"><![CDATA[<div class="note success"><p>Event事件服务是框架中必要重要的一部分，其中也会用到Queue类，Broadcast类，这也是一种设计模式，叫观察者模式。</p></div><h5 id="Dispatcher"><a href="#Dispatcher" class="headerlink" title="Dispatcher"></a>Dispatcher</h5><p>通过EventProvider为容器注册一个’event’对应的Dispatcher类。通过容器make方法直接获取事件分配类。<font color="red">框架中有两个EventProvider,这两个作用是完全不一样的</font></p><ul><li><p>Illuminate\Events\EventServiceProvider，其注册是在Application的基本服务注册方法里</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// Application, 在App类实例化时就已经注册了。</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">registerBaseServiceProviders</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->register(<span class="keyword">new</span> EventServiceProvider(<span class="keyword">$this</span>));</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->register(<span class="keyword">new</span> RoutingServiceProvider(<span class="keyword">$this</span>));</span><br><span class="line">}</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">register</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->app->singleton(<span class="string">'events'</span>, <span class="function"><span class="keyword">function</span> <span class="params">($app)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> (<span class="keyword">new</span> Dispatcher($app))->setQueueResolver(<span class="function"><span class="keyword">function</span> <span class="params">()</span> <span class="title">use</span> <span class="params">($app)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> $app->make(<span class="string">'Illuminate\Contracts\Queue\Factory'</span>);</span><br><span class="line"> });</span><br><span class="line"> });</span><br><span class="line">}</span><br></pre></td></tr></table></figure><a id="more"></a><p>可以看到，这里将event绑定为Dispatcher类，并同时为Dispatcher设置类一个获取Queue(队列)工厂类的闭包。我们框架中的event()实质就是用来处理具体事件的分配器Dispatcher类。</p></li><li><p>App\Providers\EventServiceProvider，在config/app配置的provider数组中注册。</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//继承</span></span><br><span class="line"><span class="keyword">use</span> <span class="title">Illuminate</span>\<span class="title">Foundation</span>\<span class="title">Support</span>\<span class="title">Providers</span>\<span class="title">EventServiceProvider</span> <span class="title">as</span> <span class="title">ServiceProvider</span>;</span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">EventServiceProvider</span> <span class="keyword">extends</span> <span class="title">ServiceProvider</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"></span><br><span class="line"> <span class="keyword">protected</span> $listen = [</span><br><span class="line"> <span class="string">'App\Events\TestEvent'</span> => [</span><br><span class="line"> <span class="string">'App\Listeners\TestListener1@test'</span>,</span><br><span class="line"> <span class="string">'App\Listeners\TestListener2'</span></span><br><span class="line"> ],</span><br><span class="line"> ];</span><br><span class="line"></span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">boot</span><span class="params">(DispatcherContract $events)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> <span class="keyword">parent</span>::boot($events);</span><br><span class="line"></span><br><span class="line"> <span class="comment">//</span></span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>这个类是继承Support\Providers\EventServiceProvider类的，关注点在其boot方法中。在框架所有服务注册完毕，并准备启动是，就会执行所有服务的Boot方法。</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">boot</span><span class="params">(DispatcherContract $events)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> <span class="keyword">foreach</span> (<span class="keyword">$this</span>->listen <span class="keyword">as</span> $event => $listeners) {</span><br><span class="line"> <span class="keyword">foreach</span> ($listeners <span class="keyword">as</span> $listener) {</span><br><span class="line"> $events->listen($event, $listener);</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//订阅</span></span><br><span class="line"> <span class="keyword">foreach</span> (<span class="keyword">$this</span>->subscribe <span class="keyword">as</span> $subscriber) {</span><br><span class="line"> $events->subscribe($subscriber);</span><br><span class="line"> }</span><br><span class="line"> }</span><br></pre></td></tr></table></figure><p>如上，在$listen数组中注册一个事件，并使用两个监听者。在执行boot方法时，使用循环遍历的方法，逐个将事件及其监听者传入Dispatcher的listen方法。假设我们当前的例子是不进队列，也不广播的，只走最简单的流程。</p></li></ul><h5 id="Dispatcher-listen"><a href="#Dispatcher-listen" class="headerlink" title="Dispatcher listen"></a>Dispatcher listen</h5><p>将$listen数组中的事件存入Dispatcher中的listeners属性中<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">listen</span><span class="params">($events, $listener, $priority = <span class="number">0</span>)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">foreach</span> ((<span class="keyword">array</span>) $events <span class="keyword">as</span> $event) {</span><br><span class="line"> <span class="comment">//如果含通配符</span></span><br><span class="line"> <span class="keyword">if</span> (Str::contains($event, <span class="string">'*'</span>)) {</span><br><span class="line"> <span class="keyword">$this</span>->setupWildcardListen($event, $listener);</span><br><span class="line"> } <span class="keyword">else</span> {</span><br><span class="line"> <span class="keyword">$this</span>->listeners[$event][$priority][] = <span class="keyword">$this</span>->makeListener($listener);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">unset</span>(<span class="keyword">$this</span>->sorted[$event]);</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>含通配符的事件，存入wildcards数组中，这里主要说常用的。可以看到listeners中一个事件名对应的监听者是数组。按我们的例子就是<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//这里的0是事件优先级的排序，默认都为0</span></span><br><span class="line"><span class="keyword">$this</span>->listeners[<span class="string">'App\Events\TestEvent'</span>][<span class="number">0</span>] = [</span><br><span class="line"><span class="keyword">$this</span>->makeListener(<span class="string">'App\Listeners\TestListener1@test'</span>),</span><br><span class="line"><span class="keyword">$this</span>->makeListener(<span class="string">'App\Listeners\TestListener2'</span>)</span><br><span class="line">];</span><br><span class="line"><span class="comment">//</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">createClassListener</span><span class="params">($listener)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> $container = <span class="keyword">$this</span>->container;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="function"><span class="keyword">function</span> <span class="params">()</span> <span class="title">use</span> <span class="params">($listener, $container)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> call_user_func_array(</span><br><span class="line"> <span class="keyword">$this</span>->createClassCallable($listener, $container), func_get_args()</span><br><span class="line"> );</span><br><span class="line"> };</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">createClassCallable</span><span class="params">($listener, $container)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> <span class="comment">//首先进行字符串解析，App\Listeners\TestListener1@test对应</span></span><br><span class="line"> <span class="comment">//$class=App\Listeners\TestListener1 $method=test</span></span><br><span class="line"> <span class="keyword">list</span>($class, $method) = <span class="keyword">$this</span>->parseClassCallable($listener);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->handlerShouldBeQueued($class)) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->createQueuedHandlerCallable($class, $method);</span><br><span class="line"> } <span class="keyword">else</span> {</span><br><span class="line"> <span class="comment">//$method默认是handler</span></span><br><span class="line"> <span class="keyword">return</span> [$container->make($class), $method];</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"></span><br></pre></td></tr></table></figure><br>makeListener方法会返回一个用来执行 对应Listener类上对应方法的闭包。简单点就是下图，只要当App\Events\TestEvent触发，则会执行这两个函数。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">$this</span>->listeners[<span class="string">'App\Events\TestEvent'</span>][<span class="number">0</span>] = [</span><br><span class="line"><span class="function"><span class="keyword">function</span><span class="params">()</span></span>{</span><br><span class="line"><span class="keyword">new</span> App\Listeners\TestListener1 ->test();<span class="comment">//自定义的test方法</span></span><br><span class="line">},</span><br><span class="line"><span class="function"><span class="keyword">function</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">new</span> App\Listeners\TestListener2 ->handle(); <span class="comment">//默认方法</span></span><br><span class="line">}</span><br><span class="line">];</span><br></pre></td></tr></table></figure></p><h5 id="事件触发Fire"><a href="#事件触发Fire" class="headerlink" title="事件触发Fire"></a>事件触发Fire</h5><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">fire</span><span class="params">($event, $payload = [], $halt = false)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> (is_object($event)) {</span><br><span class="line"> <span class="keyword">list</span>($payload, $event) = [[$event], get_class($event)];</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> $responses = [];</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (! is_array($payload)) {</span><br><span class="line"> $payload = [$payload];</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->firing[] = $event;</span><br><span class="line"></span><br><span class="line"> <span class="comment">//判断当前事件是否需要广播</span></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">isset</span>($payload[<span class="number">0</span>]) && $payload[<span class="number">0</span>] <span class="keyword">instanceof</span> ShouldBroadcast) {</span><br><span class="line"> <span class="keyword">$this</span>->broadcastEvent($payload[<span class="number">0</span>]);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">foreach</span> (<span class="keyword">$this</span>->getListeners($event) <span class="keyword">as</span> $listener) {</span><br><span class="line"> $response = call_user_func_array($listener, $payload);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (! is_null($response) && $halt) {</span><br><span class="line"> array_pop(<span class="keyword">$this</span>->firing);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> $response;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> ($response === <span class="keyword">false</span>) {</span><br><span class="line"> <span class="keyword">break</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> $responses[] = $response;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> array_pop(<span class="keyword">$this</span>->firing);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> $halt ? <span class="keyword">null</span> : $responses;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>现在来手动进行事件触发，执行event()->(‘App\Events\TestEvent’),如果是否字符串，就直接执行$this->getListeners(),然后循环执行事件处理方法(test,handle)。如果参数是实例,event()->(new \App\Events\TestEvent),则会判断该实例是否需要广播，如果是，则会另外加入广播队列。</p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> event服务 </tag>
<tag> eventDispatcher </tag>
</tags>
</entry>
<entry>
<title>middleware</title>
<link href="/middleware.html"/>
<url>/middleware.html</url>
<content type="html"><![CDATA[<div class="note success"><p>框架中，middleware的使用入口有3类，全局中间件 、 路由中间件 、控制器中间件 </p></div><h5 id="全局中间件"><a href="#全局中间件" class="headerlink" title="全局中间件"></a>全局中间件</h5><p> 全局使用在App\Http\Kernel下有中间件数组<br><figure class="highlight moonscript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line">//全局中间件数组</span><br><span class="line">protected $middleware = [</span><br><span class="line"> \Illuminate\Foundation\Http\Middleware\<span class="name">CheckForMaintenanceMode</span>::<span class="class"><span class="keyword">class</span>,</span></span><br><span class="line"> \App\Http\Middleware\EncryptCookies::<span class="class"><span class="keyword">class</span>,</span></span><br><span class="line"> \Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse::<span class="class"><span class="keyword">class</span>,</span></span><br><span class="line"> \Illuminate\Session\Middleware\StartSession::<span class="class"><span class="keyword">class</span>,</span></span><br><span class="line"> \Illuminate\View\Middleware\ShareErrorsFromSession::<span class="class"><span class="keyword">class</span>,</span></span><br><span class="line"> \App\Http\Middleware\VerifyCsrfToken::<span class="class"><span class="keyword">class</span>,</span></span><br><span class="line">];</span><br><span class="line"></span><br><span class="line">//路由中间件数组</span><br><span class="line">protected $routeMiddleware = [</span><br><span class="line"> <span class="string">'auth'</span> => \App\Http\Middleware\Authenticate::<span class="class"><span class="keyword">class</span>,</span></span><br><span class="line"> <span class="string">'auth.basic'</span> => \Illuminate\Auth\Middleware\AuthenticateWithBasicAuth::<span class="class"><span class="keyword">class</span>,</span></span><br><span class="line"> <span class="string">'guest'</span> => \App\Http\Middleware\RedirectIfAuthenticated::<span class="class"><span class="keyword">class</span>,</span></span><br><span class="line">];</span><br></pre></td></tr></table></figure><br><a id="more"></a><br>在框架核心类kernel进行实例化时,会将route数组中的中间件存入Router类middleware属性中<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//Illuminate\Foundation\Http\Kernel</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">(Application $app, Router $router)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->app = $app;</span><br><span class="line"> <span class="keyword">$this</span>->router = $router;</span><br><span class="line"> <span class="keyword">foreach</span> (<span class="keyword">$this</span>->routeMiddleware <span class="keyword">as</span> $key => $middleware) {</span><br><span class="line"> $router->middleware($key, $middleware);</span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"><span class="comment">//Illuminate\Routing\Router</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">middleware</span><span class="params">($name, $class)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->middleware[$name] = $class;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>;</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h5 id="全局中间件的使用"><a href="#全局中间件的使用" class="headerlink" title="全局中间件的使用"></a>全局中间件的使用</h5><p>在kernel类的管道中,全局中间件作为最外层的处理类<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">sendRequestThroughRouter</span><span class="params">($request)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">// through方法里就是全局中间件的数组</span></span><br><span class="line"> <span class="keyword">return</span> (<span class="keyword">new</span> Pipeline(<span class="keyword">$this</span>->app))</span><br><span class="line"> ->send($request)</span><br><span class="line"> ->through(<span class="keyword">$this</span>->app->shouldSkipMiddleware() ? [] : <span class="keyword">$this</span>->middleware)</span><br><span class="line"> ->then(<span class="keyword">$this</span>->dispatchToRouter());</span><br><span class="line">}</span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">dispatchToRouter</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="function"><span class="keyword">function</span> <span class="params">($request)</span> </span>{</span><br><span class="line"> <span class="keyword">$this</span>->app->instance(<span class="string">'request'</span>, $request);</span><br><span class="line"> <span class="comment">//执行路由分配</span></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->router->dispatch($request);</span><br><span class="line"> };</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h5 id="路由中间件"><a href="#路由中间件" class="headerlink" title="路由中间件"></a>路由中间件</h5><p>举例 Route::get(‘/‘,‘IndexController@index’)->middleware(‘auth’)。这是直接在当前请求并配到的Route类上直接进行’auth’中间件绑定。执行上面的dispatch时则会用到’auth’。router类的dispatch方法最终又会经过另一pipeline处理<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br></pre></td><td class="code"><pre><span class="line"> <span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">runRouteWithinStack</span><span class="params">(Route $route, Request $request)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line">...</span><br><span class="line"></span><br><span class="line"> $middleware = $shouldSkipMiddleware ? [] : <span class="keyword">$this</span>->gatherRouteMiddlewares($route);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> (<span class="keyword">new</span> Pipeline(<span class="keyword">$this</span>->container))</span><br><span class="line"> ->send($request)</span><br><span class="line"> ->through($middleware)</span><br><span class="line"> ->then(<span class="function"><span class="keyword">function</span> <span class="params">($request)</span> <span class="title">use</span> <span class="params">($route)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->prepareResponse(</span><br><span class="line"> $request,</span><br><span class="line"> $route->run($request)</span><br><span class="line"> );</span><br><span class="line"> });</span><br><span class="line">}</span><br><span class="line"><span class="comment">//获取此次匹配路由所需的中间件</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">gatherRouteMiddlewares</span><span class="params">(Route $route)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">return</span> Collection::make($route->middleware())->map(<span class="function"><span class="keyword">function</span> <span class="params">($name)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> Collection::make(<span class="keyword">$this</span>->resolveMiddlewareClassName($name));</span><br><span class="line"> })</span><br><span class="line"> ->collapse()->all();</span><br><span class="line">}</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">resolveMiddlewareClassName</span><span class="params">($name)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> $map = <span class="keyword">$this</span>->middleware;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">list</span>($name, $parameters) = array_pad(explode(<span class="string">':'</span>, $name, <span class="number">2</span>), <span class="number">2</span>, <span class="keyword">null</span>);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> (<span class="keyword">isset</span>($map[$name]) ? $map[$name] : $name).($parameters !== <span class="keyword">null</span> ? <span class="string">':'</span>.$parameters : <span class="string">''</span>);</span><br><span class="line"> }</span><br></pre></td></tr></table></figure><br>首先会获取路由中定义的全部中间件,然后进行逐一解析。比如定义middleware(‘auth’)中间件,最终会根据kernel中$routeMiddleware数组下标解析成下面的字符串<br><figure class="highlight taggerscript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">// 不带参数</span><br><span class="line">'<span class="symbol">\A</span>pp<span class="symbol">\H</span>ttp<span class="symbol">\M</span>iddleware<span class="symbol">\A</span>uthenticate'</span><br><span class="line">//如果定义middleware('auth:1,2,3'),最终解析</span><br><span class="line">'<span class="symbol">\A</span>pp<span class="symbol">\H</span>ttp<span class="symbol">\M</span>iddleware<span class="symbol">\A</span>uthenticate:1,2,3'</span><br></pre></td></tr></table></figure><br>在经过Pipeline 的then方法时，会进行中间件字符串解析。看then方法中的getSlice方法<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">getSlice</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"></span><br><span class="line"> <span class="keyword">list</span>($name, $parameters) = <span class="keyword">$this</span>->parsePipeString($pipe);</span><br><span class="line"><span class="comment">//解析后$name = '\App\Http\Middleware\Authenticate'</span></span><br><span class="line"><span class="comment">// $parameters = [1,2,3]</span></span><br><span class="line"> <span class="keyword">return</span> call_user_func_array([<span class="keyword">$this</span>->container->make($name), <span class="keyword">$this</span>->method],</span><br><span class="line"> array_merge([$passable, $stack], $parameters));</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">//$pipe 便是字符串 '\App\Http\Middleware\Authenticate:1,2,3'</span></span><br><span class="line"> <span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">parsePipeString</span><span class="params">($pipe)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">list</span>($name, $parameters) = array_pad(explode(<span class="string">':'</span>, $pipe, <span class="number">2</span>), <span class="number">2</span>, []);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (is_string($parameters)) {</span><br><span class="line"> $parameters = explode(<span class="string">','</span>, $parameters);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> [$name, $parameters];</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>最终结果就是 通过容器make($name),也就是获取中间件实例，然后执行其handle方法，传入参数分别为(request, next, parameters)</p><h5 id="控制器的中间件"><a href="#控制器的中间件" class="headerlink" title="控制器的中间件"></a>控制器的中间件</h5><p>这类中间件的是在控制器的构造函数中添加,但其却是在路由管道的最内层方法 $route->run($request)被使用到<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//如 IndexController</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">$this</span>->middleware(<span class="string">'auth'</span>);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">//Illuminate\Routing\Route</span></span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">run</span><span class="params">(Request $request)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->container = <span class="keyword">$this</span>->container ?: <span class="keyword">new</span> Container;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> <span class="keyword">if</span> (! is_string(<span class="keyword">$this</span>->action[<span class="string">'uses'</span>])) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->runCallable($request);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->customDispatcherIsBound()) {</span><br><span class="line"> <span class="comment">//这里便是控制器中间件的pipeline处理</span></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->runWithCustomDispatcher($request);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->runController($request);</span><br><span class="line"> } <span class="keyword">catch</span> (HttpResponseException $e) {</span><br><span class="line"> <span class="keyword">return</span> $e->getResponse();</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>控制器的中间件处理与上面一样，同样是通过管道处理,但是注意点在于customDispatcherIsBound()方法,判断容器中是否存在下面这样一个绑定,也就是在下面第二个方法中要用到的make(‘….’)。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">customDispatcherIsBound</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->container->bound(<span class="string">'illuminate.route.dispatcher'</span>);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">runWithCustomDispatcher</span><span class="params">(Request $request)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">list</span>($class, $method) = explode(<span class="string">'@'</span>, <span class="keyword">$this</span>->action[<span class="string">'uses'</span>]);</span><br><span class="line"></span><br><span class="line"> $dispatcher = <span class="keyword">$this</span>->container->make(<span class="string">'illuminate.route.dispatcher'</span>);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> $dispatcher->dispatch(<span class="keyword">$this</span>, $request, $class, $method);</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><p>illuminate.route.dispatcher的绑定位置，在config/app.php的provides数组里<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//config/app.php</span></span><br><span class="line"><span class="string">'providers'</span> => [</span><br><span class="line">....</span><br><span class="line"> Illuminate\Routing\ControllerServiceProvider::class,</span><br><span class="line"> ....</span><br><span class="line"> ]</span><br><span class="line"> <span class="comment">//</span></span><br><span class="line"> <span class="class"><span class="keyword">class</span> <span class="title">ControllerServiceProvider</span> <span class="keyword">extends</span> <span class="title">ServiceProvider</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">register</span><span class="params">()</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> <span class="keyword">$this</span>->app->singleton(<span class="string">'illuminate.route.dispatcher'</span>, <span class="function"><span class="keyword">function</span> <span class="params">($app)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> ControllerDispatcher($app[<span class="string">'router'</span>], $app);</span><br><span class="line"> });</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>简单点说就是，如果把这里的服务注释掉，那么在控制器中写入中间的是无效的。</p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> 中间件 </tag>
</tags>
</entry>
<entry>
<title>Session</title>
<link href="/session.html"/>
<url>/session.html</url>
<content type="html"><![CDATA[<p>laravel框架的session 是自定义类, 整个框架没有使用php自带的session_start等方法。</p><h4 id="session-start"><a href="#session-start" class="headerlink" title="session start"></a>session start</h4><p>在Illuminate\Session\Middleware\StartSession中间件中,自定义了session 启动的方法<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">handle</span><span class="params">($request, Closure $next)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->sessionHandled = <span class="keyword">true</span>;</span><br><span class="line"> <span class="comment">//判断config/session.php中的配置是否存在</span></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->sessionConfigured()) {</span><br><span class="line"> $session = <span class="keyword">$this</span>->startSession($request);</span><br><span class="line"></span><br><span class="line"> $request->setSession($session);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> $response = $next($request);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->sessionConfigured()) {</span><br><span class="line"> <span class="keyword">$this</span>->storeCurrentUrl($request, $session);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->collectGarbage($session);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->addCookieToResponse($response, $session);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> $response;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br><a id="more"></a><br>在request 请求进来时,判断config/session.php中的配置是否存在。存在，创建自定义session。<br>① 根据配置获取对应的驱动，默认是通过文件缓存来存储session_id<br>②从request中获取laravel_session对应的cookie,并解析得到session_id<br>③为$session存储类即Store类的id属性设置值, setId方法里如果请求中的session_id值不存在，则会重新生成</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">startSession</span><span class="params">(Request $request)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> with($session = <span class="keyword">$this</span>->getSession($request))->setRequestOnHandler($request);</span><br><span class="line"></span><br><span class="line"> $session->start();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> $session;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">getSession</span><span class="params">(Request $request)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"></span><br><span class="line"> $session = <span class="keyword">$this</span>->manager->driver();</span><br><span class="line"></span><br><span class="line"> $session->setId($request->cookies->get($session->getName()));</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> $session;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>④$session->start(),从Store中读取session数据。根据不同的Hander,默认是通过文件读取(Filesystem)进行数据获取</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">start</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->loadSession();</span><br><span class="line"> <span class="comment">//_token文件不存在,则重新生成_token,并存入sessin中</span></span><br><span class="line"> <span class="keyword">if</span> (! <span class="keyword">$this</span>->has(<span class="string">'_token'</span>)) {</span><br><span class="line"> <span class="keyword">$this</span>->regenerateToken();</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->started = <span class="keyword">true</span>;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * Load the session data from the handler.</span></span><br><span class="line"><span class="comment"> *</span></span><br><span class="line"><span class="comment"> * <span class="doctag">@return</span> void</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">loadSession</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->attributes = array_merge(<span class="keyword">$this</span>->attributes, <span class="keyword">$this</span>->readFromHandler());</span><br><span class="line"></span><br><span class="line"> <span class="keyword">foreach</span> (array_merge(<span class="keyword">$this</span>->bags, [<span class="keyword">$this</span>->metaBag]) <span class="keyword">as</span> $bag) {</span><br><span class="line"> <span class="keyword">$this</span>->initializeLocalBag($bag);</span><br><span class="line"></span><br><span class="line"> $bag->initialize(<span class="keyword">$this</span>->bagData[$bag->getStorageKey()]);</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>⑥ 响应获取后，将当前url添加至session中，然后随机回收清除过期session数据,最后将当前session_id添加至响应头，下次请求便根据session_id,读取storage/framework/sessions下面对应文件中存储的session数据<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">addCookieToResponse</span><span class="params">(Response $response, SessionInterface $session)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->usingCookieSessions()) {</span><br><span class="line"> <span class="keyword">$this</span>->manager->driver()->save();</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->sessionIsPersistent($config = <span class="keyword">$this</span>->manager->getSessionConfig())) {</span><br><span class="line"> $response->headers->setCookie(<span class="keyword">new</span> Cookie(</span><br><span class="line"> $session->getName(), $session->getId(), <span class="keyword">$this</span>->getCookieExpirationDate(),</span><br><span class="line"> $config[<span class="string">'path'</span>], $config[<span class="string">'domain'</span>], Arr::get($config, <span class="string">'secure'</span>, <span class="keyword">false</span>)</span><br><span class="line"> ));</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> middleware </tag>
<tag> session </tag>
</tags>
</entry>
<entry>
<title>FormRequest类</title>
<link href="/formrequest.html"/>
<url>/formrequest.html</url>
<content type="html"><![CDATA[<p>探究request请求中，表单自动验证的实现原理。<br>①任意建一个控制器,如IndexController，添加index方法</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">namespace</span> <span class="title">App</span>\<span class="title">Http</span>\<span class="title">Controllers</span>;</span><br><span class="line"></span><br><span class="line"><span class="keyword">use</span> <span class="title">App</span>\<span class="title">Http</span>\<span class="title">Requests</span>\<span class="title">IndexRequest</span>;</span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">IndexController</span> <span class="keyword">extends</span> <span class="title">Controller</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="comment">//通过依赖注入进行InputRequest类的实例化</span></span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">index</span><span class="params">(IndexRequest $request)</span></span></span><br><span class="line"><span class="function"> </span>{ </span><br><span class="line"> dump($request);</span><br><span class="line"> <span class="comment">// echo 123;</span></span><br><span class="line"> } </span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>@任意建一个继承了FormRequest类的类,如IndexRequest<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">namespace</span> <span class="title">App</span>\<span class="title">Http</span>\<span class="title">Requests</span>;</span><br><span class="line"></span><br><span class="line"><span class="keyword">use</span> <span class="title">Illuminate</span>\<span class="title">Foundation</span>\<span class="title">Http</span>\<span class="title">FormRequest</span>;</span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">IndexRequest</span> <span class="keyword">extends</span> <span class="title">FormRequest</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="comment">// public $redirect = '/home';</span></span><br><span class="line"><span class="comment">// public $redirectAction = 'IndexController@test';</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">authorize</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">return</span> <span class="keyword">true</span>;</span><br><span class="line">}</span><br><span class="line"> <span class="comment">//这里请求参数id 是必须的</span></span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">rules</span><span class="params">()</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> <span class="keyword">return</span> [</span><br><span class="line"> <span class="string">'id'</span> => <span class="string">'required'</span></span><br><span class="line"> ];</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br><a id="more"></a></p><h5 id="如何自动验证"><a href="#如何自动验证" class="headerlink" title="如何自动验证"></a>如何自动验证</h5><p>在IndexController中依赖注入，说白了就是通过容器make()方法获取实例,那么验证又是在哪里,以怎样的方式触发的呢<br>在框架config的app.php 中有很多服务注册,这里主要用到的一个服务就是</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//app.php</span></span><br><span class="line">...</span><br><span class="line">Illuminate\Validation\ValidationServiceProvider::class,</span><br><span class="line">...</span><br><span class="line"></span><br><span class="line"><span class="comment">//ValidationServiceProvider</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">register</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->registerValidationResolverHook();</span><br><span class="line"> ....</span><br><span class="line">}</span><br><span class="line"> <span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">registerValidationResolverHook</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->app->afterResolving(<span class="function"><span class="keyword">function</span> <span class="params">(ValidatesWhenResolved $resolved)</span> </span>{</span><br><span class="line"> $resolved->validate();</span><br><span class="line"> });</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>这里注册了一个全局的afterResolving 回调，看一下afterResolving都做了什么<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">afterResolving</span><span class="params">($abstract, Closure $callback = null)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> ($abstract <span class="keyword">instanceof</span> Closure && $callback === <span class="keyword">null</span>) {</span><br><span class="line"> <span class="keyword">$this</span>->afterResolvingCallback($abstract);</span><br><span class="line"> } <span class="keyword">else</span> {</span><br><span class="line"> <span class="keyword">$this</span>->afterResolvingCallbacks[$abstract][] = $callback;</span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">resolvingCallback</span><span class="params">(Closure $callback)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">//这里的abstract就是类的全名</span></span><br><span class="line"><span class="comment">//Illuminate\Contracts\Validation\ValidatesWhenResolved</span></span><br><span class="line"> $abstract = <span class="keyword">$this</span>->getFunctionHint($callback);</span><br><span class="line"> <span class="keyword">if</span> ($abstract) {</span><br><span class="line"> <span class="keyword">$this</span>->resolvingCallbacks[$abstract][] = $callback;</span><br><span class="line"> } <span class="keyword">else</span> {</span><br><span class="line"> <span class="keyword">$this</span>->globalResolvingCallbacks[] = $callback;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><p>可以看到 为app类的resolvingCallbacks数组中添加了一个ValidatesWhenResolved指向的闭包，也就是上面的<br>function (ValidatesWhenResolved $resolved) { $resolved->validate(); }</p><h5 id="验证触发"><a href="#验证触发" class="headerlink" title="验证触发"></a>验证触发</h5><p>真正的验证是在 Container类执行make(‘\App\Http\Requests\IndexRequest’)时触发的。</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//容器的make方法</span></span><br><span class="line">...</span><br><span class="line"><span class="keyword">$this</span>->fireResolvingCallbacks($abstract, $object);</span><br><span class="line">...</span><br><span class="line"></span><br><span class="line"><span class="comment">//</span></span><br><span class="line"> <span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">fireResolvingCallbacks</span><span class="params">($abstract, $object)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">$this</span>->fireCallbackArray(</span><br><span class="line"> $object, <span class="keyword">$this</span>->getCallbacksForType(</span><br><span class="line"> <span class="comment">//获取afterresolving回调</span></span><br><span class="line"> $abstract, $object, <span class="keyword">$this</span>->afterResolvingCallbacks</span><br><span class="line"> )</span><br><span class="line"> );</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">//为所有的回调函数传入当前Object(这里便是InputRequest) 和 app实例</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">fireCallbackArray</span><span class="params">($object, array $callbacks)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">foreach</span> ($callbacks <span class="keyword">as</span> $callback) {</span><br><span class="line"> $callback($object, <span class="keyword">$this</span>);</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>容器在make 任意类时都去获取全局的afterResolvingCallbacks,但是会根据指定类型进行回调，其他则直接过滤。下面这个方法则会获取当前make类对应的回调。<br>当$type恒等于 $abstract 或者 $object instanceof $type,<br>在当前例子下便是<br>‘App\Http\Requests\IndexRequest’ === ‘Illuminate\Contracts\Validation\ValidatesWhenResolved’ 不成立<br>Object(App\Http\Requests\IndexRequest) instanceof Object(ValidatesWhenResolved) 成立<br>因为InputRequest是继承FormRquest的,FormRquest又实现ValidatesWhenResolved接口</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">getCallbacksForType</span><span class="params">($abstract, $object, array $callbacksPerType)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $results = [];</span><br><span class="line"></span><br><span class="line"> <span class="keyword">foreach</span> ($callbacksPerType <span class="keyword">as</span> $type => $callbacks) {</span><br><span class="line"> <span class="keyword">if</span> ($type === $abstract || $object <span class="keyword">instanceof</span> $type) {</span><br><span class="line"> $results = array_merge($results, $callbacks);</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> $results;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>以上代码都执行完毕后，最终的执行代码就是 InputRequest->validate()。进而执行FormRequest中Trait类的validate方法。接下来便是最基本的验证流程了<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// FormRequest 类</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">FormRequest</span> <span class="keyword">extends</span> <span class="title">Request</span> <span class="keyword">implements</span> <span class="title">ValidatesWhenResolved</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"> <span class="keyword">use</span> <span class="title">ValidatesWhenResolvedTrait</span>;</span><br><span class="line">}</span><br><span class="line"><span class="comment">// </span></span><br><span class="line"><span class="keyword">trait</span> ValidatesWhenResolvedTrait</span><br><span class="line">{</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">validate</span><span class="params">()</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> $instance = <span class="keyword">$this</span>->getValidatorInstance();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (! <span class="keyword">$this</span>->passesAuthorization()) {</span><br><span class="line"> <span class="keyword">$this</span>->failedAuthorization();</span><br><span class="line"> } <span class="keyword">elseif</span> (! $instance->passes()) {</span><br><span class="line"> <span class="keyword">$this</span>->failedValidation($instance);</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h5 id="FromRequest获取"><a href="#FromRequest获取" class="headerlink" title="FromRequest获取"></a>FromRequest获取</h5><p>首先这个FromRequest类有对应的服务提供者,在config/app.php 的 providers数组中<br><figure class="highlight clean"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line"><span class="string">'providers'</span> => [</span><br><span class="line"> ...</span><br><span class="line"> Illuminate\Foundation\Providers\FoundationServiceProvider::<span class="keyword">class</span>,</span><br><span class="line">...</span><br><span class="line">]</span><br></pre></td></tr></table></figure><br>然后在FoundationServiceProvider的provides中存在<br><figure class="highlight scala"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">FoundationServiceProvider</span> <span class="keyword">extends</span> <span class="title">AggregateServiceProvider</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"> <span class="keyword">protected</span> $providers = [</span><br><span class="line"> <span class="type">FormRequestServiceProvider</span>::<span class="class"><span class="keyword">class</span>,</span></span><br><span class="line"><span class="class"> ]</span>;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>在框架的bootstrap过程中，所有的服务都会进行一一注册。接下开便是register</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// AggregateServiceProvider </span></span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">register</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->instances = [];</span><br><span class="line"></span><br><span class="line"> <span class="keyword">foreach</span> (<span class="keyword">$this</span>->providers <span class="keyword">as</span> $provider) {</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->instances[] = <span class="keyword">$this</span>->app->register($provider);</span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"></span><br></pre></td></tr></table></figure><h5 id="FormRequest与Request"><a href="#FormRequest与Request" class="headerlink" title="FormRequest与Request"></a>FormRequest与Request</h5><p>所有请求参数最开始实际都是只存在Request类中，但是IndexController中的InputRequest类有其所有数据。底层实现原理与上面验证比较类似。<br>当所有服务注册完毕,逐个执行其boot方法，为项目启动做准备时， 这里就注册了一个router.matched的事件监听者，也就是当请求url匹配到存在路由时,触发回调。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//FormRequestServiceProvider</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">boot</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->app[<span class="string">'events'</span>]->listen(<span class="string">'router.matched'</span>, <span class="function"><span class="keyword">function</span> <span class="params">()</span> </span>{</span><br><span class="line"> <span class="keyword">$this</span>->app->resolving(<span class="function"><span class="keyword">function</span> <span class="params">(FormRequest $request, $app)</span> </span>{</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->initializeRequest($request, $app[<span class="string">'request'</span>]);</span><br><span class="line"></span><br><span class="line"> $request->setContainer($app)->setRedirector($app->make(Redirector::class));</span><br><span class="line"> });</span><br><span class="line"> });</span><br><span class="line">}</span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">initializeRequest</span><span class="params">(FormRequest $form, Request $current)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> $files = $current->files->all();</span><br><span class="line"></span><br><span class="line"> $files = is_array($files) ? array_filter($files) : $files;</span><br><span class="line"></span><br><span class="line"> $form->initialize(</span><br><span class="line"> $current->query->all(), $current->request->all(), $current->attributes->all(),</span><br><span class="line"> $current->cookies->all(), $files, $current->server->all(), $current->getContent()</span><br><span class="line"> );</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">if</span> ($session = $current->getSession()) {</span><br><span class="line"> $form->setSession($session);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> $form->setUserResolver($current->getUserResolver());</span><br><span class="line"></span><br><span class="line"> $form->setRouteResolver($current->getRouteResolver());</span><br><span class="line"> }</span><br></pre></td></tr></table></figure><br>这个回调的最终目的就是 将原Request类中的所有属性为InputRequest复制一份。包括设置获取user及route的回调,如 基本写法request()->user(), 通过依赖注入后$inputrequest->user() 也可实现该效果.</p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> FormReuqest </tag>
</tags>
</entry>
<entry>
<title>Auth 用户认证</title>
<link href="/auth.html"/>
<url>/auth.html</url>
<content type="html"><![CDATA[<p>  laravel Auth认证，自带登录，注册，api认证(高版本才有)等方式。</p><h4 id="auth基本配置"><a href="#auth基本配置" class="headerlink" title="auth基本配置"></a>auth基本配置</h4><p>用户认证的基本配置是config/auth.php 文件<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="string">'driver'</span> => <span class="string">'eloquent'</span>, <span class="comment">// 数据库驱动,eloquent 或 database</span></span><br><span class="line"><span class="string">'model'</span> => App\User::class, <span class="comment">// 默认用户认证模型</span></span><br><span class="line"><span class="string">'table'</span> => <span class="string">'users'</span>, <span class="comment">// 默认表名</span></span><br><span class="line"><span class="string">'password'</span> => [ <span class="comment">// 忘记密码配置</span></span><br><span class="line"> <span class="string">'email'</span> => <span class="string">'emails.password'</span>,</span><br><span class="line"> <span class="string">'table'</span> => <span class="string">'password_resets'</span>,</span><br><span class="line"> <span class="string">'expire'</span> => <span class="number">60</span>,</span><br><span class="line"> ],</span><br></pre></td></tr></table></figure></p><h4 id="auth服务提供者"><a href="#auth服务提供者" class="headerlink" title="auth服务提供者"></a>auth服务提供者</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">register</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->registerAuthenticator(); <span class="comment">// 注册用户认证者</span></span><br><span class="line"></span><br><span class="line"> <span class="comment">// 为已认证的用户，注册一个可以直接获取user信息的闭包</span></span><br><span class="line"> </span><br><span class="line"> <span class="keyword">$this</span>->registerUserResolver(); </span><br><span class="line"> <span class="comment">//操作方法权限控制</span></span><br><span class="line"> <span class="keyword">$this</span>->registerAccessGate();</span><br><span class="line"></span><br><span class="line"> <span class="comment">//为request 重新绑定可以获取user的闭包</span></span><br><span class="line"> <span class="comment">//登录之后,在任何request请求中，直接使用request()->user()即可获取</span></span><br><span class="line"> <span class="keyword">$this</span>->registerRequestRebindHandler();</span><br><span class="line">}</span><br></pre></td></tr></table></figure><a id="more"></a><h5 id="registerAuthenticator"><a href="#registerAuthenticator" class="headerlink" title="registerAuthenticator"></a>registerAuthenticator</h5><p>①注册auth对应的单一绑定，最终返回 AuthManager类<br>②注册auth.drive 的驱动操作绑定<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">registerAuthenticator</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->app->singleton(<span class="string">'auth'</span>, <span class="function"><span class="keyword">function</span> <span class="params">($app)</span> </span>{</span><br><span class="line"></span><br><span class="line"> $app[<span class="string">'auth.loaded'</span>] = <span class="keyword">true</span>;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> AuthManager($app);</span><br><span class="line"> });</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->app->singleton(<span class="string">'auth.driver'</span>, <span class="function"><span class="keyword">function</span> <span class="params">($app)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> $app[<span class="string">'auth'</span>]->driver();</span><br><span class="line"> });</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><p>举例语法 Auth::user()<br>首先 通过Auth门面的静态调用方法获取AuthManager类( 设为 $authmanager)<br>然后 执行$authmanager->user();<br><figure class="highlight scala"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">AuthManager</span> <span class="keyword">extends</span> <span class="title">Manager</span> <span class="title">//</span> <span class="title">继承了Manager</span> </span></span><br><span class="line"><span class="class">....</span></span><br><span class="line"><span class="class"><span class="title">//Manager基类的__call</span> <span class="title">方法</span></span></span><br><span class="line"><span class="class"><span class="title">public</span> <span class="title">function</span> <span class="title">__call</span>(<span class="params">$method, $parameters</span>)</span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"> <span class="keyword">return</span> call_user_func_array([$<span class="keyword">this</span>->driver(), $method], $parameters);</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><p>第二步调用了魔术方法,实际执行是 根据配置driver 创建对应驱动。先获取到$provider ,并传入Guard类作为其属性<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">createEloquentDriver</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $provider = <span class="keyword">$this</span>->createEloquentProvider();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> Guard($provider, <span class="keyword">$this</span>->app[<span class="string">'session.store'</span>]);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">// 获取对应的User模型, 可以最直观的理解为PDO连接句柄</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">createEloquentProvider</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $model = <span class="keyword">$this</span>->app[<span class="string">'config'</span>][<span class="string">'auth.model'</span>];</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> EloquentUserProvider(<span class="keyword">$this</span>->app[<span class="string">'hash'</span>], $model);</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><p>最终执行的是 new Guard ->user();<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">user</span><span class="params">()</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->loggedOut) {</span><br><span class="line"> <span class="keyword">return</span>;</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//多次使用Auth::user(),直接返回</span></span><br><span class="line"> <span class="keyword">if</span> (! is_null(<span class="keyword">$this</span>->user)) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->user;</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">// 根据session_id 获取session。从而获取登录之后</span></span><br><span class="line"> <span class="comment">//用户表的主键id，</span></span><br><span class="line"> $id = <span class="keyword">$this</span>->session->get(<span class="keyword">$this</span>->getName());</span><br><span class="line"></span><br><span class="line"> $user = <span class="keyword">null</span>;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (! is_null($id)) {</span><br><span class="line"> <span class="comment">// 如果id 存在，通过User::find($id)，获取用户信息</span></span><br><span class="line"> $user = <span class="keyword">$this</span>->provider->retrieveById($id);</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//recaller 用于 remember_token 的使用</span></span><br><span class="line"> $recaller = <span class="keyword">$this</span>->getRecaller();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (is_null($user) && ! is_null($recaller)) {</span><br><span class="line"> $user = <span class="keyword">$this</span>->getUserByRecaller($recaller);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> ($user) {</span><br><span class="line"> <span class="keyword">$this</span>->updateSession($user->getAuthIdentifier());</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->fireLoginEvent($user, <span class="keyword">true</span>);</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//保存属性</span></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->user = $user;</span><br><span class="line"> }</span><br></pre></td></tr></table></figure></p><h4 id="登录"><a href="#登录" class="headerlink" title="登录"></a>登录</h4><p>使用AuthenticatesAndRegistersUsers(Trait类),方便复用和方法重新<br><figure class="highlight rust"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//AuthController</span></span><br><span class="line"> <span class="keyword">use</span> AuthenticatesAndRegistersUsers, ThrottlesLogins;</span><br><span class="line"></span><br><span class="line"><span class="comment">//AuthenticatesAndRegistersUsers</span></span><br><span class="line"><span class="class"><span class="keyword">trait</span> <span class="title">AuthenticatesAndRegistersUsers</span></span></span><br><span class="line">{</span><br><span class="line"> <span class="keyword">use</span> AuthenticatesUsers, RegistersUsers {</span><br><span class="line"> <span class="comment">//trait 方法冲突解决</span></span><br><span class="line"> AuthenticatesUsers::redirectPath insteadof RegistersUsers; </span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><p>ThrottlesLogins类进行登录次数尝试的现在<br>在AuthenticatesUsers定义登录方法,在RegistersUsers定义注册方法<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">postLogin</span><span class="params">(Request $request)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->validate($request, [</span><br><span class="line"> <span class="keyword">$this</span>->loginUsername() => <span class="string">'required'</span>, <span class="string">'password'</span> => <span class="string">'required'</span>,</span><br><span class="line"> ]);</span><br><span class="line"></span><br><span class="line"> $throttles = <span class="keyword">$this</span>->isUsingThrottlesLoginsTrait();</span><br><span class="line"> <span class="comment">// 如果有使用throttles,检查是否尝试登录次数过多</span></span><br><span class="line"> <span class="keyword">if</span> ($throttles && <span class="keyword">$this</span>->hasTooManyLoginAttempts($request)) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->sendLockoutResponse($request);</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">// 从请求数据里获取username 和 password 组成的数组</span></span><br><span class="line"> $credentials = <span class="keyword">$this</span>->getCredentials($request);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (Auth::attempt($credentials, $request->has(<span class="string">'remember'</span>))) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->handleUserWasAuthenticated($request, $throttles);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> ($throttles) {</span><br><span class="line"> <span class="comment">//登录失败,增加尝试次数</span></span><br><span class="line"> <span class="keyword">$this</span>->incrementLoginAttempts($request);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> redirect(<span class="keyword">$this</span>->loginPath())</span><br><span class="line"> ->withInput($request->only(<span class="keyword">$this</span>->loginUsername(), <span class="string">'remember'</span>))</span><br><span class="line"> ->withErrors([</span><br><span class="line"> <span class="keyword">$this</span>->loginUsername() => <span class="keyword">$this</span>->getFailedLoginMessage(),</span><br><span class="line"> ]);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">//认证后的 后继操作</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">handleUserWasAuthenticated</span><span class="params">(Request $request, $throttles)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> ($throttles) {</span><br><span class="line"> <span class="comment">//登录成功，清空尝试次数</span></span><br><span class="line"> <span class="keyword">$this</span>->clearLoginAttempts($request);</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">// 用户认证通过后，自定义方法</span></span><br><span class="line"> <span class="keyword">if</span> (method_exists(<span class="keyword">$this</span>, <span class="string">'authenticated'</span>)) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->authenticated($request, Auth::user());</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">// 通过 $path = $this->session->pull('url.intended', $default);</span></span><br><span class="line"> <span class="comment">// 最终登录成功跳转</span></span><br><span class="line"> <span class="keyword">return</span> redirect()->intended(<span class="keyword">$this</span>->redirectPath());</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><p>真正的用户登录数据的校验<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 数据校验</span></span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">attempt</span><span class="params">(array $credentials = [], $remember = false, $login = true)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->fireAttemptEvent($credentials, $remember, $login);</span><br><span class="line"> <span class="comment">// 通过$credentials中所有字段(不含password字段)值在user表中进行查询</span></span><br><span class="line"> <span class="keyword">$this</span>->lastAttempted = $user = <span class="keyword">$this</span>->provider->retrieveByCredentials($credentials);</span><br><span class="line"> <span class="comment">//将查询到的user信息中的密码与 提交的密码进行哈希比对</span></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->hasValidCredentials($user, $credentials)) {</span><br><span class="line"> <span class="keyword">if</span> ($login) {</span><br><span class="line"> <span class="keyword">$this</span>->login($user, $remember);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">true</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">false</span>;</span><br><span class="line">}</span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">login</span><span class="params">(UserContract $user, $remember = false)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">//更新session , 参数是user表主键值</span></span><br><span class="line"> <span class="keyword">$this</span>->updateSession($user->getAuthIdentifier());</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> ($remember) {</span><br><span class="line"> <span class="comment">//创建remember_token值，并写入user表对应的字段里</span></span><br><span class="line"> <span class="keyword">$this</span>->createRememberTokenIfDoesntExist($user);</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">$this</span>->queueRecallerCookie($user);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="comment">// If we have an event dispatcher instance set we will fire an event so that</span></span><br><span class="line"> <span class="comment">// any listeners will hook into the authentication events and run actions</span></span><br><span class="line"> <span class="comment">// based on the login and logout events fired from the guard instances.</span></span><br><span class="line"> <span class="keyword">$this</span>->fireLoginEvent($user, $remember);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->setUser($user);</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><p>重点看下 <font color="red">$this->queueRecallerCookie($user);</font> 这里会把remember_token 存入CookieJar的队列属性中,在kernel的中间件AddQueuedCookiesToResponse里会为响应头添加缓存，除非清楚浏览器缓存，否则一直存在(因为默认是以forever方式存储的).</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// AddQueuedCookiesToResponse 中间件</span></span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">handle</span><span class="params">($request, Closure $next)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $response = $next($request);</span><br><span class="line"></span><br><span class="line"> <span class="comment">//此时响应数据已拿到，只需为reponse头设置cookie 信息</span></span><br><span class="line"> <span class="keyword">foreach</span> (<span class="keyword">$this</span>->cookies->getQueuedCookies() <span class="keyword">as</span> $cookie) {</span><br><span class="line"> $response->headers->setCookie($cookie);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> $response;</span><br><span class="line">}</span><br></pre></td></tr></table></figure>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> 用户认证 </tag>
<tag> Auth </tag>
</tags>
</entry>
<entry>
<title>registerProvider</title>
<link href="/registerProvider.html"/>
<url>/registerProvider.html</url>
<content type="html"><![CDATA[<div class="note success"><p>框架bootstrap过程之 registerProvider。这里包括即时注册、延时注册、和事件注册服务。</p></div><p>为所有已存在的服务提供者进行统一注册<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//Illuminate\Foundation\Bootstrap\RegisterProviders</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">bootstrap</span><span class="params">(Application $app)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $app->registerConfiguredProviders();</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">// Illuminate\Foundation\Application</span></span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">registerConfiguredProviders</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $manifestPath = <span class="keyword">$this</span>->getCachedServicesPath();</span><br><span class="line"></span><br><span class="line"> (<span class="keyword">new</span> ProviderRepository(<span class="keyword">$this</span>, <span class="keyword">new</span> Filesystem, $manifestPath))</span><br><span class="line"> ->load(<span class="keyword">$this</span>->config[<span class="string">'app.providers'</span>]);</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>首先获取需要注册的服务提供者的清单， 先读取服务提供者清单缓存，文件是位于root/bootstrap/cache下的services.json。<br> providers保存所有需要注册的服务(config/app.php里的providers)<br> eager保存即时注册的服务<br> deferred保存需要延时注册服务<br> when 保存需要条件才注册的服务<br><a id="more"></a><br><figure class="highlight json"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line">{</span><br><span class="line"> <span class="attr">"providers"</span>: [ ],</span><br><span class="line"> <span class="attr">"eager"</span>: [],</span><br><span class="line"> <span class="attr">"deferred"</span>: [],</span><br><span class="line"> <span class="attr">"when"</span>: [],</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>ProviderRepository作为保存服务提供者的仓库类，接收了三个参数 app实例, 文件操作类实例, providers缓存清单。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">load</span><span class="params">(array $providers)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> $manifest = <span class="keyword">$this</span>->loadManifest();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->shouldRecompile($manifest, $providers)) {</span><br><span class="line"> $manifest = <span class="keyword">$this</span>->compileManifest($providers);</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//读取when 数组</span></span><br><span class="line"> <span class="keyword">foreach</span> ($manifest[<span class="string">'when'</span>] <span class="keyword">as</span> $provider => $events) {</span><br><span class="line"> <span class="keyword">$this</span>->registerLoadEvents($provider, $events);</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//读取eager数组</span></span><br><span class="line"> <span class="keyword">foreach</span> ($manifest[<span class="string">'eager'</span>] <span class="keyword">as</span> $provider) {</span><br><span class="line"> <span class="keyword">$this</span>->app->register(<span class="keyword">$this</span>->createProvider($provider));</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//读取deferred数组</span></span><br><span class="line"> <span class="keyword">$this</span>->app->addDeferredServices($manifest[<span class="string">'deferred'</span>]);</span><br><span class="line"> }</span><br></pre></td></tr></table></figure><br>首先通过loadManifest方法读取缓存清单，并通过json_decode转成数组,再通过数组合并array_merge([‘when’=>[]], $manifest),如果原缓存清单没有when数组则添加。<br>然后通过对比config/app下的providers数组与清单里的providers数组是否一致，来决定是否重新编译。若框架初次运行，肯定是要编译的。所以关注点也在于编译清单的compileManifest方法</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">compileManifest</span><span class="params">($providers)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> $manifest = <span class="keyword">$this</span>->freshManifest($providers);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">foreach</span> ($providers <span class="keyword">as</span> $provider) {</span><br><span class="line"> <span class="comment">//获取具体服务提供者实例</span></span><br><span class="line"> <span class="comment">//$instance = new $provider(app);</span></span><br><span class="line"> $instance = <span class="keyword">$this</span>->createProvider($provider);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> ($instance->isDeferred()) {</span><br><span class="line"> <span class="keyword">foreach</span> ($instance->provides() <span class="keyword">as</span> $service) {</span><br><span class="line"> $manifest[<span class="string">'deferred'</span>][$service] = $provider;</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">// 使用基类ServierProvider的when方法，返回空数组[]</span></span><br><span class="line"> $manifest[<span class="string">'when'</span>][$provider] = $instance->when();</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">else</span> {</span><br><span class="line"> $manifest[<span class="string">'eager'</span>][] = $provider;</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->writeManifest($manifest);</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//获取初始化数组</span></span><br><span class="line"> <span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">freshManifest</span><span class="params">(array $providers)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> <span class="keyword">return</span> [<span class="string">'providers'</span> => $providers, <span class="string">'eager'</span> => [], <span class="string">'deferred'</span> => []];</span><br><span class="line"> }</span><br></pre></td></tr></table></figure><p>首先通过freshManifest获取初始化的默认数组，然后对配置中的providers数组进行循环遍历处理。根据具体类的属性，最终生成想要的清单。<br>这里假设$provides 只有两个 Illuminate\Auth\AuthServiceProvider 和 Illuminate\Cache\CacheServiceProvider，作为例子。<br>获取服务提供者实例，根据其deffer属性判断是否为需要延迟注册的服务。如果不是，则存入eager对应的数组中。<br><figure class="highlight scala"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//没有deffer=true属性 </span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">AuthServiceProvider</span> <span class="keyword">extends</span> <span class="title">ServiceProvider</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"></span><br><span class="line">}</span><br><span class="line"><span class="comment">//延时加载</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">CacheServiceProvider</span> <span class="keyword">extends</span> <span class="title">ServiceProvider</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"> <span class="keyword">protected</span> $defer = <span class="literal">true</span>; </span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>例子中编译好的清单$manifest就是下面这样的,接着执行writeManifest方法，将清单写入缓存server.json<br><figure class="highlight json"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line">{</span><br><span class="line"> <span class="attr">"providers"</span>: [ </span><br><span class="line"> <span class="string">"Illuminate\\Auth\\AuthServiceProvider"</span>,</span><br><span class="line"> <span class="string">"Illuminate\\Cache\\CacheServiceProvider"</span>,</span><br><span class="line"> ],</span><br><span class="line"> <span class="attr">"eager"</span>: [</span><br><span class="line"> <span class="string">"Illuminate\\Auth\\AuthServiceProvider"</span>,</span><br><span class="line"> ],</span><br><span class="line"> <span class="attr">"deferred"</span>: [</span><br><span class="line"> <span class="string">"Illuminate\\Cache\\CacheServiceProvider"</span>,</span><br><span class="line"> ],</span><br><span class="line"> <span class="attr">"when"</span>: {</span><br><span class="line"> <span class="attr">"Illuminate\\Cache\\CacheServiceProvider"</span>: [],</span><br><span class="line"> },</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>继续看上面的load方法<br>1.读取eager数组的直接执行app->regisert(provider实例);</p><p>2.读取when数组,比如我们重写CacheServiceProvider的when方法, 返回如下的数组<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//</span></span><br><span class="line">{</span><br><span class="line"> <span class="string">"when"</span>: {</span><br><span class="line"> <span class="comment">// 可以多个事件</span></span><br><span class="line"> <span class="string">"Illuminate\\Cache\\CacheServiceProvider"</span>: [<span class="string">'test_cache_when1'</span>,<span class="string">'test_cache_when2'</span>],</span><br><span class="line"> },</span><br><span class="line">}</span><br><span class="line"><span class="comment">//</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">registerLoadEvents</span><span class="params">($provider, array $events)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> (count($events) < <span class="number">1</span>) {</span><br><span class="line"> <span class="keyword">return</span>;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> $app = <span class="keyword">$this</span>->app;</span><br><span class="line"> <span class="comment">//注册事件监听者</span></span><br><span class="line"> $app->make(<span class="string">'events'</span>)->listen($events, <span class="function"><span class="keyword">function</span> <span class="params">()</span> <span class="title">use</span> <span class="params">($app, $provider)</span> </span>{</span><br><span class="line"> $app->register($provider);</span><br><span class="line"> });</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>这里的实质就是注册事件回调，当我们执行event()->fire(‘test_cache_when1’), 或者event()->fire(‘test_cache_when2’)就会触发事件回调，将对应的provider进行注册。</p><p>3.读取deffer数组 ,这里把延时服务数组赋值给app类的deferredServices属性,真正的注册则是在执行app的make方法时实现的。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// application类</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">addDeferredServices</span><span class="params">(array $services)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->deferredServices = array_merge(<span class="keyword">$this</span>->deferredServices, $services);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">make</span><span class="params">($abstract, array $parameters = [])</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line">...</span><br><span class="line"><span class="comment">//如果延时服务存在，那么在make之前进行注册</span></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">isset</span>(<span class="keyword">$this</span>->deferredServices[$abstract])) {</span><br><span class="line"> <span class="keyword">$this</span>->loadDeferredProvider($abstract);</span><br><span class="line"> }</span><br><span class="line"> ...</span><br><span class="line">} </span><br></pre></td></tr></table></figure><br>所谓服务注册无非是为容器绑定一个可以返回所需实例的闭包，而实际使用中，除了app启动时必须实例外(如router)，只有需要用到的对应实例，才进行闭包绑定，然后再通过容器make。</p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> 服务注册 </tag>
</tags>
</entry>
<entry>
<title>门面Facades类</title>
<link href="/facades.html"/>
<url>/facades.html</url>
<content type="html"><![CDATA[<p>  门面，重要设计思想。通过门面，我们可以直接在所需类上使用静态调用的方法，如Cache::get(‘test’)、DB::table(‘test’)等</p><h4 id="Facedes初始化"><a href="#Facedes初始化" class="headerlink" title="Facedes初始化"></a>Facedes初始化</h4><p>门面的初始化在核心类执行bootstrap方法时，就初始化完成。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//Illuminate\Foundation\Bootstrap\RegisterFacades 的 bootstrap()</span></span><br><span class="line"><span class="comment">//单例模式,获取AliasLoader实例</span></span><br><span class="line"> AliasLoader::getInstance($app->make(<span class="string">'config'</span>)->get(<span class="string">'app.aliases'</span>))->register();</span><br><span class="line"></span><br><span class="line"> <span class="comment">//config目录下app.aliases的门面别名数组</span></span><br><span class="line"> <span class="string">'aliases'</span> => [</span><br><span class="line"> <span class="string">'Cache'</span> => Illuminate\Support\Facades\Cache::class,</span><br><span class="line"> <span class="string">'DB'</span> => Illuminate\Support\Facades\DB::class,</span><br><span class="line"> ],</span><br></pre></td></tr></table></figure></p><h4 id="class-alias"><a href="#class-alias" class="headerlink" title="class_alias"></a>class_alias</h4><p>为门面类的实例注册别名。拿Cache门面举例，打印 new Cache() 实质返回 Illuminate\Support\Facades\Cache类<br><a id="more"></a><br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">register</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> <span class="keyword">if</span> (! <span class="keyword">$this</span>->registered) {</span><br><span class="line"> <span class="keyword">$this</span>->prependToLoaderStack();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->registered = <span class="keyword">true</span>;</span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">prependToLoaderStack</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> <span class="comment">//将load函数显式注册到SPL __autoload函数队列中</span></span><br><span class="line"> spl_autoload_register([<span class="keyword">$this</span>, <span class="string">'load'</span>], <span class="keyword">true</span>, <span class="keyword">true</span>);</span><br><span class="line">}</span><br><span class="line"><span class="comment">//注册自动加载</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">load</span><span class="params">($alias)</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">isset</span>(<span class="keyword">$this</span>->aliases[$alias])) {</span><br><span class="line"> <span class="comment">//例如 class_alias('Illuminate\Support\Facades\Cache', 'Cache')</span></span><br><span class="line"> <span class="keyword">return</span> class_alias(<span class="keyword">$this</span>->aliases[$alias], $alias);</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>所有的门面类都必须继承Facades<br><figure class="highlight scala"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br></pre></td><td class="code"><pre><span class="line">namespace <span class="type">Illuminate</span>\<span class="type">Support</span>\<span class="type">Facades</span>;</span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Cache</span> <span class="keyword">extends</span> <span class="title">Facade</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"> <span class="keyword">protected</span> static function getFacadeAccessor()</span><br><span class="line"> {</span><br><span class="line"> <span class="keyword">return</span> <span class="symbol">'cach</span>e';</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h4 id="Facades基类"><a href="#Facades基类" class="headerlink" title="Facades基类"></a>Facades基类</h4><p>通过__callStatic方法实现门面的静态调用。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br></pre></td><td class="code"><pre><span class="line"> <span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">__callStatic</span><span class="params">($method, $args)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $instance = <span class="keyword">static</span>::getFacadeRoot();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (! $instance) {</span><br><span class="line"> <span class="keyword">throw</span> <span class="keyword">new</span> RuntimeException(<span class="string">'A facade root has not been set.'</span>);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">switch</span> (count($args)) {</span><br><span class="line"> <span class="keyword">case</span> <span class="number">0</span>:</span><br><span class="line"> <span class="keyword">return</span> $instance->$method();</span><br><span class="line"> <span class="keyword">case</span> <span class="number">1</span>:</span><br><span class="line"> <span class="keyword">return</span> $instance->$method($args[<span class="number">0</span>]);</span><br><span class="line"> <span class="keyword">case</span> <span class="number">2</span>:</span><br><span class="line"> <span class="keyword">return</span> $instance->$method($args[<span class="number">0</span>], $args[<span class="number">1</span>]);</span><br><span class="line"> <span class="keyword">case</span> <span class="number">3</span>:</span><br><span class="line"> <span class="keyword">return</span> $instance->$method($args[<span class="number">0</span>], $args[<span class="number">1</span>], $args[<span class="number">2</span>]);</span><br><span class="line"> <span class="keyword">case</span> <span class="number">4</span>:</span><br><span class="line"> <span class="keyword">return</span> $instance->$method($args[<span class="number">0</span>], $args[<span class="number">1</span>], $args[<span class="number">2</span>], $args[<span class="number">3</span>]);</span><br><span class="line"> <span class="keyword">default</span>:</span><br><span class="line"> <span class="keyword">return</span> call_user_func_array([$instance, $method], $args);</span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"><span class="comment">//解析获取门面实例</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">getFacadeRoot</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">//传入'cache'</span></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">static</span>::resolveFacadeInstance(<span class="keyword">static</span>::getFacadeAccessor());</span><br><span class="line">}</span><br><span class="line"><span class="keyword">protected</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">resolveFacadeInstance</span><span class="params">($name)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> (is_object($name)) {</span><br><span class="line"> <span class="keyword">return</span> $name;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">isset</span>(<span class="keyword">static</span>::$resolvedInstance[$name])) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">static</span>::$resolvedInstance[$name];</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">// static::$app[$name], 在app类上已数组方式获取'cache'。 最终通过容器的make('cache')方法获取对应实例(CacheManager)</span></span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">static</span>::$resolvedInstance[$name] = <span class="keyword">static</span>::$app[$name];</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> 门面 </tag>
<tag> Facedes </tag>
</tags>
</entry>
<entry>
<title>发送response</title>
<link href="/send-response.html"/>
<url>/send-response.html</url>
<content type="html"><![CDATA[<p>   index.php 的最后两行代码。整体流程结束。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//index.php</span></span><br><span class="line">$response->send(); <span class="comment">// 发送响应</span></span><br><span class="line"></span><br><span class="line"><span class="comment">// 循环遍历kernel里所有中间件和当前路由所用中间件, 如果terminate方法存在,则执行</span></span><br><span class="line"></span><br><span class="line"><span class="comment">//app->terminate(), 执行 全局terminate 方法</span></span><br><span class="line">$kernel->terminate($request, $response);</span><br></pre></td></tr></table></figure></p><h4 id="sendResponse"><a href="#sendResponse" class="headerlink" title="sendResponse"></a>sendResponse</h4><p>$response 为 Illuminate\Http\Response类,继承插件BaseResponse类<br><figure class="highlight scala"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//插件 symfony/http-foundation</span></span><br><span class="line">use <span class="type">Symfony</span>\<span class="type">Component</span>\<span class="type">HttpFoundation</span>\<span class="type">Response</span> as <span class="type">BaseResponse</span>;</span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Response</span> <span class="keyword">extends</span> <span class="title">BaseResponse</span></span></span><br></pre></td></tr></table></figure><br><a id="more"></a><br>使用父类Symfony\Component\HttpFoundation\Response的send<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">send</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->sendHeaders(); <span class="comment">//设置响应头信息</span></span><br><span class="line"> <span class="keyword">$this</span>->sendContent(); </span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (function_exists(<span class="string">'fastcgi_finish_request'</span>)) {</span><br><span class="line"> fastcgi_finish_request();</span><br><span class="line"> } <span class="keyword">elseif</span> (!\in_array(PHP_SAPI, <span class="keyword">array</span>(<span class="string">'cli'</span>, <span class="string">'phpdbg'</span>), <span class="keyword">true</span>)) {</span><br><span class="line"> <span class="comment">//与apache之间响应信息交互完毕。无法继续使用header()函数</span></span><br><span class="line"> <span class="keyword">static</span>::closeOutputBuffers(<span class="number">0</span>, <span class="keyword">true</span>);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>;</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h4 id="sendContent"><a href="#sendContent" class="headerlink" title="sendContent"></a>sendContent</h4><p>Illuminate\Http\Response里的sendContent。如果content是Renderable实例，也就是在路由控制器中执行了return view()。需要就content进行视图编译后，将其赋值为静态html文件。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">setContent</span><span class="params">($content)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->original = $content;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->shouldBeJson($content)) {</span><br><span class="line"> <span class="keyword">$this</span>->header(<span class="string">'Content-Type'</span>, <span class="string">'application/json'</span>);</span><br><span class="line"></span><br><span class="line"> $content = <span class="keyword">$this</span>->morphToJson($content);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="comment">//视图类 则执行模板编译</span></span><br><span class="line"> <span class="keyword">elseif</span> ($content <span class="keyword">instanceof</span> Renderable) {</span><br><span class="line"> <span class="comment">// 获取编译完成的视图 HTML 文件</span></span><br><span class="line"> $content = $content->render();</span><br><span class="line"> </span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">parent</span>::setContent($content);</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h4 id="terminate"><a href="#terminate" class="headerlink" title="terminate"></a>terminate</h4><p>此时response已返回成功，terminate为后续操作。会逐一执行所有中间的terminate方法。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">terminate</span><span class="params">($request, $response)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="comment">//当前this为kernel </span></span><br><span class="line"> $middlewares = <span class="keyword">$this</span>->app->shouldSkipMiddleware() ? [] : array_merge(</span><br><span class="line"> <span class="keyword">$this</span>->gatherRouteMiddlewares($request), <span class="comment">//当前路由中间件</span></span><br><span class="line"> <span class="keyword">$this</span>->middleware <span class="comment">//kernel中间件</span></span><br><span class="line"> );</span><br><span class="line"> <span class="keyword">foreach</span> ($middlewares <span class="keyword">as</span> $middleware) {</span><br><span class="line"> <span class="keyword">list</span>($name, $parameters) = <span class="keyword">$this</span>->parseMiddleware($middleware);</span><br><span class="line"></span><br><span class="line"> $instance = <span class="keyword">$this</span>->app->make($name); </span><br><span class="line"> <span class="comment">// 通过容器获取中间件实例,执行方法terminate()</span></span><br><span class="line"> <span class="keyword">if</span> (method_exists($instance, <span class="string">'terminate'</span>)) {</span><br><span class="line"> $instance->terminate($request, $response);</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">$this</span>->app->terminate();</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>比如执行 StartSession 中间件的 terminate方法,最终保存session。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"> \Illuminate\Session\Middleware\StartSession</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">terminate</span><span class="params">($request, $response)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->sessionHandled && <span class="keyword">$this</span>->sessionConfigured() && ! <span class="keyword">$this</span>->usingCookieSessions()) {</span><br><span class="line"> <span class="keyword">$this</span>->manager->driver()->save();</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> 发送响应 </tag>
<tag> sendresponse </tag>
<tag> terminate </tag>
</tags>
</entry>
<entry>
<title>将Request分配至Route</title>
<link href="/router-dispatch.html"/>
<url>/router-dispatch.html</url>
<content type="html"><![CDATA[<p>在上篇的管道中的最终会执行下面这行代码<br><figure class="highlight elixir"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">return</span> <span class="variable">$this</span>->router->dispatch(<span class="variable">$request</span>);</span><br></pre></td></tr></table></figure></p><h4 id="dispatch方法"><a href="#dispatch方法" class="headerlink" title="dispatch方法"></a>dispatch方法</h4><p>首先调用路由前置的过滤方法, 如在routes.php 中可以使用Route::filter(‘before’=>’auth’)来创建前置方法<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//Router类</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">dispatch</span><span class="params">(Request $request)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->currentRequest = $request;</span><br><span class="line"> <span class="comment">//分配至路由前，需要执行的过滤器</span></span><br><span class="line"> $response = <span class="keyword">$this</span>->callFilter(<span class="string">'before'</span>, $request);</span><br><span class="line"> <span class="comment">//如果过滤器有直接返回response,就不再进行路由分配</span></span><br><span class="line"> <span class="keyword">if</span> (is_null($response)) {</span><br><span class="line"> $response = <span class="keyword">$this</span>->dispatchToRoute($request);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> $response = <span class="keyword">$this</span>->prepareResponse($request, $response);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->callFilter(<span class="string">'after'</span>, $request, $response);</span><br><span class="line"> <span class="keyword">return</span> $response;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br><a id="more"></a></p><h4 id="findRoute方法"><a href="#findRoute方法" class="headerlink" title="findRoute方法"></a>findRoute方法</h4><p>findRoute方法实质是从RouteCollection类中,根据路由url获取对应的Route类。 Router类是路由处理者，将routes.php 中的路由，用路由名做key,Route类做value,最终存入RouteCollection。如下图<br><img src="/images/route_collection.png"><br>通过请求methd，与url 在RouteCollection进行键值匹配，获取Route类<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">findRoute</span><span class="params">($request)</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> <span class="comment">//$this->routes 是 RouteCollection</span></span><br><span class="line"> <span class="comment">//获取一个匹配路由,如果不存在则扔出错误。匹配请求方式Post,get,匹配url</span></span><br><span class="line"> <span class="keyword">$this</span>->current = $route = <span class="keyword">$this</span>->routes->match($request);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->container->instance(<span class="string">'Illuminate\Routing\Route'</span>, $route);<span class="comment">// 将当前路由实例注入容器</span></span><br><span class="line"> </span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->substituteBindings($route);</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>substituteBindings方法实质是获取路由中正则匹配到的参数，如 Route::get(‘/aaa/{id}/{type}’,function($id,$type){}), 请求url为/aaa/11/1,那么id=11，type=1就会被捕获，并作为参数传入action对应的闭包中。</p><h4 id="runRouteWithinStack"><a href="#runRouteWithinStack" class="headerlink" title="runRouteWithinStack"></a>runRouteWithinStack</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// dispatchToRoute()方法中的核心方法</span></span><br><span class="line">$response = <span class="keyword">$this</span>->runRouteWithinStack(</span><br><span class="line"> $route, $request</span><br><span class="line"> );</span><br><span class="line"><span class="comment">//路由管道</span></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">runRouteWithinStack</span><span class="params">(Route $route, Request $request)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $shouldSkipMiddleware = <span class="keyword">$this</span>->container->bound(<span class="string">'middleware.disable'</span>) &&</span><br><span class="line"> <span class="keyword">$this</span>->container->make(<span class="string">'middleware.disable'</span>) === <span class="keyword">true</span>;</span><br><span class="line"> <span class="comment">//路由中间件</span></span><br><span class="line"> <span class="comment">//可以在routes.php中直接定义</span></span><br><span class="line"> <span class="comment">//如果在控制器的构造函数中执行$this->middleware('name'),必须有</span></span><br><span class="line"> <span class="comment">//Illuminate\Routing\ControllerServiceProvider::class这个服务</span></span><br><span class="line"> $middleware = $shouldSkipMiddleware ? [] : <span class="keyword">$this</span>->gatherRouteMiddlewares($route);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> (<span class="keyword">new</span> Pipeline(<span class="keyword">$this</span>->container))</span><br><span class="line"> ->send($request)</span><br><span class="line"> ->through($middleware)</span><br><span class="line"> ->then(<span class="function"><span class="keyword">function</span> <span class="params">($request)</span> <span class="title">use</span> <span class="params">($route)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->prepareResponse(</span><br><span class="line"> $request,</span><br><span class="line"> $route->run($request) <span class="comment">// 会直接执行路由匿名函数,获取返回值</span></span><br><span class="line"> );</span><br><span class="line"> });</span><br><span class="line">}</span><br></pre></td></tr></table></figure><h4 id="run-request"><a href="#run-request" class="headerlink" title="run($request)"></a>run($request)</h4><p>执行路由对应的方法<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">run</span><span class="params">(Request $request)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> <span class="keyword">$this</span>->container = <span class="keyword">$this</span>->container ?: <span class="keyword">new</span> Container;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> <span class="keyword">if</span> (! is_string(<span class="keyword">$this</span>->action[<span class="string">'uses'</span>])) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->runCallable($request);</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//如果有自定义路由分配器,则重新由该分配器处理路由</span></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->customDispatcherIsBound()) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->runWithCustomDispatcher($request);</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->runController($request);</span><br><span class="line"> } <span class="keyword">catch</span> (HttpResponseException $e) {</span><br><span class="line"> <span class="keyword">return</span> $e->getResponse();</span><br><span class="line"> }</span><br><span class="line"> }</span><br></pre></td></tr></table></figure></p><p>当路由对应的action 是匿名函数，如 Route::get(‘/‘,function(Request $reuqest){ });<br>通过反射类和容器获取request 依赖实例,注入参数，并执行<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">runCallable</span><span class="params">(Request $request)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> $parameters = <span class="keyword">$this</span>->resolveMethodDependencies(</span><br><span class="line"> <span class="keyword">$this</span>->parametersWithoutNulls(), <span class="keyword">new</span> ReflectionFunction(<span class="keyword">$this</span>->action[<span class="string">'uses'</span>])</span><br><span class="line"> );</span><br><span class="line"> <span class="keyword">return</span> call_user_func_array(<span class="keyword">$this</span>->action[<span class="string">'uses'</span>], $parameters);</span><br><span class="line"> }</span><br></pre></td></tr></table></figure><br>当路由对应的action 是Controller类对应的方法名，如 Route::get(‘/‘,‘IndexController@index’);<br>首先通过反射类和容器获取IndexController里面的index方法中的依赖注入实例,如index(Request $request)<br>然后通过容器获取IndexController实例,最终执行index方法。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">runController</span><span class="params">(Request $request)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">list</span>($class, $method) = explode(<span class="string">'@'</span>, <span class="keyword">$this</span>->action[<span class="string">'uses'</span>]);</span><br><span class="line"></span><br><span class="line"> $parameters = <span class="keyword">$this</span>->resolveClassMethodDependencies(</span><br><span class="line"> <span class="keyword">$this</span>->parametersWithoutNulls(), $class, $method</span><br><span class="line"> );</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">if</span> (! method_exists($instance = <span class="keyword">$this</span>->container->make($class), $method)) {</span><br><span class="line"> <span class="keyword">throw</span> <span class="keyword">new</span> NotFoundHttpException;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> call_user_func_array([$instance, $method], $parameters);</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h4 id="prepareResponse"><a href="#prepareResponse" class="headerlink" title="prepareResponse"></a>prepareResponse</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line">设置相应属性</span><br><span class="line"><span class="number">1</span>、将路由action最终执行返回的结果设置为content属性。注意 <span class="string">'echo'</span> 情况下content 依然为空</span><br><span class="line"><span class="number">2</span>、在中间件后续操作中，也会为response头设置cookie等其他属性</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">prepareResponse</span><span class="params">($request, $response)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> ($response <span class="keyword">instanceof</span> PsrResponseInterface) {</span><br><span class="line"> $response = (<span class="keyword">new</span> HttpFoundationFactory)->createResponse($response);</span><br><span class="line"> } <span class="keyword">elseif</span> (! $response <span class="keyword">instanceof</span> SymfonyResponse) {</span><br><span class="line"> $response = <span class="keyword">new</span> Response($response);</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//根据response类的相关属性，设置响应头信息</span></span><br><span class="line"> <span class="keyword">return</span> $response->prepare($request);</span><br><span class="line">}</span><br></pre></td></tr></table></figure>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> 分配路由 </tag>
<tag> findRoute方法 </tag>
<tag> prepareResponse </tag>
</tags>
</entry>
<entry>
<title>核心类中的pipeline</title>
<link href="/kernel-pipeline.html"/>
<url>/kernel-pipeline.html</url>
<content type="html"><![CDATA[<p>  这是框架中kernel管道中的源码,through 方法将获取 App\Http\kernel中的$middleware数组，给Pipeline中的pipes属性赋值(与上篇中的$pipes一样),规定需要通过的中间件。</p><h4 id="middleware"><a href="#middleware" class="headerlink" title="middleware"></a>middleware</h4><p>App\Http\kernel中的$middleware 如下<br><figure class="highlight tex"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line">protected <span class="formula">$middleware = [</span></span><br><span class="line"><span class="formula"> //判断当前项目是否处于维护模式</span></span><br><span class="line"><span class="formula"> <span class="tag">\<span class="name">Illuminate</span></span><span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Http</span></span><span class="tag">\<span class="name">Middleware</span></span><span class="tag">\<span class="name">CheckForMaintenanceMode</span></span>::class,</span></span><br><span class="line"><span class="formula"> //响应头Cookie如XSRF-TOKEN，laravel_session加密，以及对应Request的Cookie解密</span></span><br><span class="line"><span class="formula"> <span class="tag">\<span class="name">App</span></span><span class="tag">\<span class="name">Http</span></span><span class="tag">\<span class="name">Middleware</span></span><span class="tag">\<span class="name">EncryptCookies</span></span>::class, </span></span><br><span class="line"><span class="formula"> //获取CookieJar队列中的Cookie类, 并存入响应头, 如用户登录remember_token</span></span><br><span class="line"><span class="formula"> <span class="tag">\<span class="name">Illuminate</span></span><span class="tag">\<span class="name">Cookie</span></span><span class="tag">\<span class="name">Middleware</span></span><span class="tag">\<span class="name">AddQueuedCookiesToResponse</span></span>::class, </span></span><br><span class="line"><span class="formula"> //初始化session,整个底层并未session_start,通过手动生成session_id来完成这一动作</span></span><br><span class="line"><span class="formula"> <span class="tag">\<span class="name">Illuminate</span></span><span class="tag">\<span class="name">Session</span></span><span class="tag">\<span class="name">Middleware</span></span><span class="tag">\<span class="name">StartSession</span></span>::class,</span></span><br><span class="line"><span class="formula"> //将session中的errors变量，注入到全局视图类中。这是个一次性session</span></span><br><span class="line"><span class="formula"> <span class="tag">\<span class="name">Illuminate</span></span><span class="tag">\<span class="name">View</span></span><span class="tag">\<span class="name">Middleware</span></span><span class="tag">\<span class="name">ShareErrorsFromSession</span></span>::class,</span></span><br><span class="line"><span class="formula"> //Csrf 验证请求中的XSRF-TOKEN值</span></span><br><span class="line"><span class="formula"> <span class="tag">\<span class="name">App</span></span><span class="tag">\<span class="name">Http</span></span><span class="tag">\<span class="name">Middleware</span></span><span class="tag">\<span class="name">VerifyCsrfToken</span></span>::class,</span></span><br><span class="line"><span class="formula"> ];</span></span><br></pre></td></tr></table></figure><br><a id="more"></a><br><figure class="highlight livescript"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br></pre></td><td class="code"><pre><span class="line">......</span><br><span class="line"><span class="keyword">return</span> (<span class="keyword">new</span> Pipeline($<span class="keyword">this</span>->app))</span><br><span class="line"><span class="function"> -></span>send($request)</span><br><span class="line"><span class="function"> -></span>through($<span class="keyword">this</span>->app->shouldSkipMiddleware() ? [] : $<span class="keyword">this</span>->middleware)</span><br><span class="line"><span class="function"> -></span><span class="keyword">then</span>($<span class="keyword">this</span>->dispatchToRouter());</span><br></pre></td></tr></table></figure></p><h4 id="then方法"><a href="#then方法" class="headerlink" title="then方法"></a>then方法</h4><p>首先关注其参数,是将当前请求经kernel中间件处理完毕后，分配至路由需要执行的最终Closure<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br></pre></td><td class="code"><pre><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">then</span><span class="params">(Closure $destination)</span></span></span><br><span class="line"><span class="function"> </span>{ </span><br><span class="line"> $destination = <span class="function"><span class="keyword">function</span> <span class="params">($request)</span> </span>{</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">$this</span>->app->instance(<span class="string">'request'</span>, $request);</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->router->dispatch($request); <span class="comment">// 请求最终到达的路由</span></span><br><span class="line"></span><br><span class="line"> };</span><br><span class="line"> $firstSlice = <span class="keyword">$this</span>->getInitialSlice($destination);</span><br><span class="line"></span><br><span class="line"> $pipes = array_reverse(<span class="keyword">$this</span>->pipes); <span class="comment">//即中间件数组 顺序颠倒,因为array_reduce使用逆嵌套</span></span><br><span class="line"><span class="comment">// $this->passable就是request类</span></span><br><span class="line"> <span class="keyword">return</span> call_user_func(</span><br><span class="line"> array_reduce($pipes, <span class="keyword">$this</span>->getSlice(), $firstSlice), <span class="keyword">$this</span>->passable</span><br><span class="line"> );</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">getSlice</span><span class="params">()</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="function"><span class="keyword">function</span> <span class="params">($stack, $pipe)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="function"><span class="keyword">function</span> <span class="params">($passable)</span> <span class="title">use</span> <span class="params">($stack, $pipe)</span> </span>{</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> ($pipe <span class="keyword">instanceof</span> Closure) {</span><br><span class="line"> <span class="keyword">return</span> call_user_func($pipe, $passable, $stack);</span><br><span class="line"> } <span class="keyword">else</span> {</span><br><span class="line"> <span class="keyword">list</span>($name, $parameters) = <span class="keyword">$this</span>->parsePipeString($pipe);</span><br><span class="line"> <span class="comment">//$this->method = handle; 方法</span></span><br><span class="line"> <span class="comment">// $name 即中间类名,通过容器获取实例</span></span><br><span class="line"> <span class="keyword">return</span> call_user_func_array([<span class="keyword">$this</span>->container->make($name), <span class="keyword">$this</span>->method],</span><br><span class="line"> array_merge([$passable, $stack], $parameters));</span><br><span class="line"> }</span><br><span class="line"> };</span><br><span class="line"> };</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//最内层，将请求分发至路由的闭包</span></span><br><span class="line"> <span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">getInitialSlice</span><span class="params">(Closure $destination)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="function"><span class="keyword">function</span> <span class="params">($passable)</span> <span class="title">use</span> <span class="params">($destination)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> call_user_func($destination, $passable);</span><br><span class="line"> };</span><br><span class="line"> }</span><br></pre></td></tr></table></figure></p><p>所有的焦点都聚集到最终返回响应的路由。下篇分析 $this->router->dispatch($request)。</p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> pipeline </tag>
<tag> middleware </tag>
</tags>
</entry>
<entry>
<title>pipeline管道(原理模拟)</title>
<link href="/pipeline.html"/>
<url>/pipeline.html</url>
<content type="html"><![CDATA[<h4 id="管道概念"><a href="#管道概念" class="headerlink" title="管道概念"></a>管道概念</h4><p>  当从一个进程连接数据流到另一个进程时,我们使用术语管道。我们通常是把一个进程的输出通过管道连接到另一个进程的输入。通过这些进程(<font color="#f56954">中间件Middleware</font>)的处理后最终返回结果值。这里也有一个高大上的术语:<font color="#f56954">装饰者模式</font><br><img src="/images/pipeline.png"></p><h4 id="基本实现"><a href="#基本实现" class="headerlink" title="基本实现"></a>基本实现</h4><p>按照上图，下面是用代码模拟其实现的过程。<br><a id="more"></a><br><figure class="highlight xml"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br></pre></td><td class="code"><pre><span class="line"><span class="php"><span class="meta"><?php</span> </span></span><br><span class="line"><span class="php"><span class="class"><span class="keyword">class</span> <span class="title">Hardwater</span></span></span></span><br><span class="line"><span class="php">{</span></span><br><span class="line"><span class="php"><span class="keyword">public</span> $contain = [</span></span><br><span class="line"><span class="php"><span class="string">'sand'</span>=> <span class="keyword">true</span>,</span></span><br><span class="line"><span class="php"><span class="string">'impurity'</span>=> <span class="keyword">true</span>,</span></span><br><span class="line"><span class="php"><span class="string">'ion'</span> => [<span class="string">'Mg+'</span>,<span class="string">'Al3+'</span>],</span></span><br><span class="line"><span class="php">];</span></span><br><span class="line"><span class="php">}</span></span><br><span class="line"><span class="php"><span class="comment">//滤网,清除沙子</span></span></span><br><span class="line"><span class="php"><span class="class"><span class="keyword">class</span> <span class="title">Sieve</span></span></span></span><br><span class="line"><span class="php">{</span></span><br><span class="line"><span class="php"><span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">handle</span><span class="params">($water)</span></span></span></span><br><span class="line"><span class="php">{</span></span><br><span class="line"><span class="php">$water->contain[<span class="string">'sand'</span>] = <span class="keyword">false</span>;</span></span><br><span class="line"><span class="php"></span></span><br><span class="line"><span class="php"><span class="keyword">return</span> $water;</span></span><br><span class="line"><span class="php">}</span></span><br><span class="line"><span class="php">}</span></span><br><span class="line"><span class="php"><span class="comment">//明矾,清除细颗粒杂质</span></span></span><br><span class="line"><span class="php"><span class="class"><span class="keyword">class</span> <span class="title">KAlSO4</span></span></span></span><br><span class="line"><span class="php">{</span></span><br><span class="line"><span class="php"><span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">handle</span><span class="params">($water)</span></span></span></span><br><span class="line"><span class="php">{</span></span><br><span class="line"><span class="php">$water->contain[<span class="string">'impurity'</span>] = <span class="keyword">false</span>;</span></span><br><span class="line"><span class="php"></span></span><br><span class="line"><span class="php"><span class="keyword">return</span> $water;</span></span><br><span class="line"><span class="php">}</span></span><br><span class="line"><span class="php">}</span></span><br><span class="line"><span class="php"><span class="comment">//高温加热</span></span></span><br><span class="line"><span class="php"><span class="class"><span class="keyword">class</span> <span class="title">Heat</span></span></span></span><br><span class="line"><span class="php">{</span></span><br><span class="line"><span class="php"><span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">handle</span><span class="params">($water)</span></span></span></span><br><span class="line"><span class="php">{</span></span><br><span class="line"><span class="php">$water->contain[<span class="string">'ion'</span>] = [];</span></span><br><span class="line"><span class="php"></span></span><br><span class="line"><span class="php"><span class="keyword">return</span> $water;</span></span><br><span class="line"><span class="php">}</span></span><br><span class="line"><span class="php">}</span></span><br><span class="line"><span class="php">$water = <span class="keyword">new</span> Hardwater;</span></span><br><span class="line"><span class="php"></span></span><br><span class="line"><span class="php">$water = Sieve::handle($water);</span></span><br><span class="line"><span class="php"></span></span><br><span class="line"><span class="php">$water = KAlSO4::handle($water);</span></span><br><span class="line"><span class="php"></span></span><br><span class="line"><span class="php">$softWater = Heat::handle($water);</span></span><br><span class="line"><span class="php"></span></span><br><span class="line"><span class="php"><span class="comment">//变形一下</span></span></span><br><span class="line"><span class="php">$softWater = Heat::handle(</span></span><br><span class="line"><span class="php">KAlSO4::handle(</span></span><br><span class="line"><span class="php">Sieve::handle($water)</span></span><br><span class="line"><span class="php">)</span></span><br><span class="line"><span class="php">);</span></span><br></pre></td></tr></table></figure></p><h4 id="嵌套闭包实现"><a href="#嵌套闭包实现" class="headerlink" title="嵌套闭包实现"></a>嵌套闭包实现</h4><p>这块需要理解通过array_reduce，生成最终pipeline函数的过程。重在实际操作。<br><blockquote><footer><strong>array_reduce</strong><cite><a href="http://php.net/manual/zh/function.array-reduce.php" target="_blank" rel="noopener">php.net/manual/zh/function.array-reduce.php</a></cite></footer></blockquote><br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br></pre></td><td class="code"><pre><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">hardWater</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> $contain = [</span><br><span class="line"><span class="string">'sand'</span>=> <span class="keyword">true</span>,</span><br><span class="line"><span class="string">'impurity'</span>=> <span class="keyword">true</span>,</span><br><span class="line"><span class="string">'ion'</span> => [<span class="string">'Mg+'</span>,<span class="string">'Al3+'</span>],</span><br><span class="line">];</span><br><span class="line">}</span><br><span class="line"><span class="comment">//滤网,清除沙子</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Sieve</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">handle</span><span class="params">($water,Closure $next)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">echo</span> <span class="string">"沙子处理<br>"</span>;</span><br><span class="line">$water->contain[<span class="string">'sand'</span>] = <span class="keyword">null</span>;</span><br><span class="line"></span><br><span class="line">$softWater = $next($water);</span><br><span class="line"></span><br><span class="line"><span class="keyword">echo</span> <span class="string">"沙子过滤完毕<br>"</span>;</span><br><span class="line"></span><br><span class="line"><span class="keyword">return</span> $softWater;</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line"><span class="comment">//明矾,清除细颗粒杂质</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">KAlSO4</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">handle</span><span class="params">($water,Closure $next)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">echo</span> <span class="string">"明矾处理<br>"</span>;</span><br><span class="line">$water->contain[<span class="string">'impurity'</span>] = <span class="keyword">null</span>;</span><br><span class="line"></span><br><span class="line">$softWater = $next($water);</span><br><span class="line"></span><br><span class="line"><span class="keyword">echo</span> <span class="string">"杂质过滤完毕<br>"</span>;</span><br><span class="line"><span class="keyword">return</span> $softWater;</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line"><span class="comment">//高温加热</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Heat</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">handle</span><span class="params">($water,Closure $next)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">echo</span> <span class="string">"加热处理<br>"</span>;</span><br><span class="line">$water->contain[<span class="string">'ion'</span>] = <span class="keyword">null</span>;</span><br><span class="line">$softWater = $next($water);</span><br><span class="line"><span class="keyword">echo</span> <span class="string">"离子过滤完毕<br>"</span>;</span><br><span class="line"></span><br><span class="line"><span class="keyword">return</span> $softWater;</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="function"><span class="keyword">function</span> <span class="title">getSlice</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">return</span> <span class="function"><span class="keyword">function</span> <span class="params">($stack,$pipe)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">return</span> <span class="function"><span class="keyword">function</span><span class="params">($water)</span> <span class="title">use</span> <span class="params">($stack,$pipe)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">return</span> $pipe::handle($water,$stack);</span><br><span class="line">};</span><br><span class="line">};</span><br><span class="line">}</span><br><span class="line"><span class="comment">// 通过增加和减少$pipes的数量,查看最终管道闭包的变化，更易于理解</span></span><br><span class="line">$pipes = [</span><br><span class="line"><span class="string">'Sieve'</span>,</span><br><span class="line"><span class="string">'KAlSO4'</span>,</span><br><span class="line"><span class="comment">//'Heat'</span></span><br><span class="line">];</span><br><span class="line">$firstSlice = <span class="function"><span class="keyword">function</span><span class="params">($water)</span> </span>{</span><br><span class="line"> <span class="keyword">echo</span> <span class="string">"<span style='color:green;'>硬水净化完毕</span><br/>"</span>;</span><br><span class="line"> $softWater = $water;</span><br><span class="line"> <span class="keyword">return</span> $softWater;</span><br><span class="line">};</span><br><span class="line"></span><br><span class="line">$pipes = array_reverse($pipes); <span class="comment">// 由于闭包是逆向生成,必须先颠倒顺序。</span></span><br><span class="line"></span><br><span class="line">$pipeline = array_reduce($pipes, getSlice(),$firstSlice); <span class="comment">//最终管道闭包</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">echo</span> <span class="string">"<pre>"</span>.print_r($pipeline,<span class="number">1</span>);</span><br><span class="line"></span><br><span class="line">$hardWater = <span class="keyword">new</span> hardWater;</span><br><span class="line">$res = call_user_func($pipeline,$hardWater);</span><br></pre></td></tr></table></figure></p><p>这是最终的函数，以及打印结果<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br></pre></td><td class="code"><pre><span class="line">Closure Object</span><br><span class="line">(</span><br><span class="line"><span class="comment">//第一次将Hardwater传入Sieve进行处理,比如结果为A1</span></span><br><span class="line"> [<span class="keyword">static</span>] => <span class="keyword">Array</span> </span><br><span class="line"> (</span><br><span class="line"> [stack] => Closure Object <span class="comment">// $next( A1 )</span></span><br><span class="line"> (</span><br><span class="line"> <span class="comment">// 第二次将A1传入KAlSO4进行处理,比如结果为A2</span></span><br><span class="line"> [<span class="keyword">static</span>] => <span class="keyword">Array</span> </span><br><span class="line"> (</span><br><span class="line"> [stack] => Closure Object <span class="comment">// $next( A2 )</span></span><br><span class="line"> (</span><br><span class="line"> <span class="comment">// 第三次次将A1传入Heat进行处理,比如结果为A3</span></span><br><span class="line"> [<span class="keyword">static</span>] => <span class="keyword">Array</span> </span><br><span class="line"> (</span><br><span class="line"> <span class="comment">//最终$next(A3),执行firstSlice对应的闭包</span></span><br><span class="line"> <span class="comment">//也称之为destination(目的地)，最终结果</span></span><br><span class="line"> [stack] => Closure Object</span><br><span class="line"> (</span><br><span class="line"> [parameter] => <span class="keyword">Array</span></span><br><span class="line"> (</span><br><span class="line"> [$water] => </span><br><span class="line"> )</span><br><span class="line"></span><br><span class="line"> )</span><br><span class="line"></span><br><span class="line"> [pipe] => Heat</span><br><span class="line"> )</span><br><span class="line"></span><br><span class="line"> [parameter] => <span class="keyword">Array</span></span><br><span class="line"> (</span><br><span class="line"> [$water] => </span><br><span class="line"> )</span><br><span class="line"></span><br><span class="line"> )</span><br><span class="line"></span><br><span class="line"> [pipe] => KAlSO4</span><br><span class="line"> )</span><br><span class="line"></span><br><span class="line"> [parameter] => <span class="keyword">Array</span></span><br><span class="line"> (</span><br><span class="line"> [$water] => </span><br><span class="line"> )</span><br><span class="line"></span><br><span class="line"> )</span><br><span class="line"></span><br><span class="line"> [pipe] => Sieve</span><br><span class="line"> )</span><br><span class="line"></span><br><span class="line"> [parameter] => <span class="keyword">Array</span></span><br><span class="line"> (</span><br><span class="line"> [$water] => </span><br><span class="line"> )</span><br><span class="line"></span><br><span class="line">)</span><br><span class="line">沙子处理</span><br><span class="line">明矾处理</span><br><span class="line">加热处理</span><br><span class="line"><span class="string">'硬水净化完毕'</span></span><br><span class="line">离子过滤完毕</span><br><span class="line">杂质过滤完毕</span><br><span class="line">沙子过滤完毕</span><br></pre></td></tr></table></figure></p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> pipeline </tag>
<tag> middleware </tag>
</tags>
</entry>
<entry>
<title>kernel类handle方法</title>
<link href="/kernel-handle.html"/>
<url>/kernel-handle.html</url>
<content type="html"><![CDATA[<p>  通过容器获取kernel实例,将request类传入kernel的handle方法,最终返回响应而这是一个极其漫长的过程,因为这个过程将整个框架所需的服务、文件全部初始化完成。</p><h4 id="kernel的handle方法"><a href="#kernel的handle方法" class="headerlink" title="kernel的handle方法"></a>kernel的handle方法</h4><p>随着这个方法执行完毕,整体框架的流程基本就完成80%了<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//index.php</span></span><br><span class="line">$kernel = $app->make(Illuminate\Contracts\Http\Kernel::class);</span><br><span class="line">$response = $kernel->handle(</span><br><span class="line"> $request = Illuminate\Http\Request::capture()</span><br><span class="line">);</span><br><span class="line"></span><br><span class="line"><span class="comment">//kernel的handle方法</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">handle</span><span class="params">($request)</span></span></span><br><span class="line"><span class="function"></span>{<span class="comment">//在此过程中，所有异常都会通过Exceptions 直接抛出</span></span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> $request->enableHttpMethodParameterOverride();</span><br><span class="line"> <span class="comment">//通过发送请求，经路由处理，最终返回response</span></span><br><span class="line"> $response = <span class="keyword">$this</span>->sendRequestThroughRouter($request);</span><br><span class="line"> } <span class="keyword">catch</span> (<span class="keyword">Exception</span> $e) {</span><br><span class="line"> <span class="keyword">$this</span>->reportException($e);</span><br><span class="line"></span><br><span class="line"> $response = <span class="keyword">$this</span>->renderException($request, $e);</span><br><span class="line"> } <span class="keyword">catch</span> (Throwable $e) {</span><br><span class="line"> $e = <span class="keyword">new</span> FatalThrowableError($e);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->reportException($e);</span><br><span class="line"></span><br><span class="line"> $response = <span class="keyword">$this</span>->renderException($request, $e);</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">// 触发'kernel.handled'事件listener,如果存在的话</span></span><br><span class="line"> <span class="keyword">$this</span>->app[<span class="string">'events'</span>]->fire(<span class="string">'kernel.handled'</span>, [$request, $response]);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> $response;</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h4 id="sendRequestThroughRouter"><a href="#sendRequestThroughRouter" class="headerlink" title="sendRequestThroughRouter"></a>sendRequestThroughRouter</h4><p>重中之重的方法，分两个部分说<br>① $this->bootstrap();<br>① Pipeline管道;<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"> <span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">sendRequestThroughRouter</span><span class="params">($request)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->app->instance(<span class="string">'request'</span>, $request); <span class="comment">//Reuqest 实例加入instances 数组中</span></span><br><span class="line"></span><br><span class="line"> Facade::clearResolvedInstance(<span class="string">'request'</span>); </span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->bootstrap(); <span class="comment">//关键方法,几乎加载所有服务和文件</span></span><br><span class="line"></span><br><span class="line"> <span class="comment">// 管道类处理request </span></span><br><span class="line"> <span class="keyword">return</span> (<span class="keyword">new</span> Pipeline(<span class="keyword">$this</span>->app))</span><br><span class="line"> ->send($request)</span><br><span class="line"> ->through(<span class="keyword">$this</span>->app->shouldSkipMiddleware() ? [] : <span class="keyword">$this</span>->middleware)</span><br><span class="line"> ->then(<span class="keyword">$this</span>->dispatchToRouter());</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> kernel </tag>
</tags>
</entry>
<entry>
<title>bootstrap所有服务</title>
<link href="/bootstrap.html"/>
<url>/bootstrap.html</url>
<content type="html"><![CDATA[<p>  bootstrap是整个框架的引导,加载了必须的服务，文件等。</p><h4 id="bootstrap"><a href="#bootstrap" class="headerlink" title="bootstrap"></a>bootstrap</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> $bootstrappers = [</span><br><span class="line"> <span class="string">'Illuminate\Foundation\Bootstrap\DetectEnvironment'</span>, <span class="comment">//env环境变量处理类</span></span><br><span class="line"> <span class="string">'Illuminate\Foundation\Bootstrap\LoadConfiguration'</span>, <span class="comment">//config配置文件处理类</span></span><br><span class="line"> <span class="string">'Illuminate\Foundation\Bootstrap\ConfigureLogging'</span>, <span class="comment">//系统日志处理类,报错等</span></span><br><span class="line"> <span class="string">'Illuminate\Foundation\Bootstrap\HandleExceptions'</span>, <span class="comment">//异常处理类</span></span><br><span class="line"> <span class="string">'Illuminate\Foundation\Bootstrap\RegisterFacades'</span>, <span class="comment">//门面处理类</span></span><br><span class="line"> <span class="string">'Illuminate\Foundation\Bootstrap\RegisterProviders'</span>, <span class="comment">// 注册config.app 中所有服务提供者</span></span><br><span class="line"> <span class="string">'Illuminate\Foundation\Bootstrap\BootProviders'</span>, <span class="comment">//启用 已注册的所有服务</span></span><br><span class="line">];</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">bootstrap</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> (! <span class="keyword">$this</span>->app->hasBeenBootstrapped()) {</span><br><span class="line"> <span class="keyword">$this</span>->app->bootstrapWith(<span class="keyword">$this</span>->bootstrappers()); <span class="comment">// 即传入$this->bootstrappers</span></span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"></span><br></pre></td></tr></table></figure><a id="more"></a><h4 id="bootstrapWith"><a href="#bootstrapWith" class="headerlink" title="bootstrapWith"></a>bootstrapWith</h4><p>通过容器make方法获取上文数组中的实例,并执行其bootstrap(app)方法,传入参数为app实例<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">bootstrapWith</span><span class="params">(array $bootstrappers)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->hasBeenBootstrapped = <span class="keyword">true</span>;</span><br><span class="line"></span><br><span class="line"> <span class="keyword">foreach</span> ($bootstrappers <span class="keyword">as</span> $bootstrapper) {</span><br><span class="line"> <span class="keyword">$this</span>[<span class="string">'events'</span>]->fire(<span class="string">'bootstrapping: '</span>.$bootstrapper, [<span class="keyword">$this</span>]);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->make($bootstrapper)->bootstrap(<span class="keyword">$this</span>);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>[<span class="string">'events'</span>]->fire(<span class="string">'bootstrapped: '</span>.$bootstrapper, [<span class="keyword">$this</span>]);</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>在bootstrapWith执行完成之后,它的整个流程会在events(Dispatcher类)的sorted属性中有详细记载,如下<br><figure class="highlight tex"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br></pre></td><td class="code"><pre><span class="line">protected <span class="formula">$sorted = [</span></span><br><span class="line"><span class="formula">"Illuminate<span class="tag">\<span class="name">Events</span></span><span class="tag">\<span class="name">EventServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "Illuminate<span class="tag">\<span class="name">Routing</span></span><span class="tag">\<span class="name">RoutingServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapping: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">DetectEnvironment</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapped: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">DetectEnvironment</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapping: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">LoadConfiguration</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapped: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">LoadConfiguration</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapping: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">ConfigureLogging</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapped: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">ConfigureLogging</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapping: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">HandleExceptions</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapped: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">HandleExceptions</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapping: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">RegisterFacades</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapped: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">RegisterFacades</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapping: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">RegisterProviders</span></span>" => []</span></span><br><span class="line"><span class="formula"> "Illuminate<span class="tag">\<span class="name">Auth</span></span><span class="tag">\<span class="name">AuthServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "Illuminate<span class="tag">\<span class="name">Routing</span></span><span class="tag">\<span class="name">ControllerServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "Illuminate<span class="tag">\<span class="name">Cookie</span></span><span class="tag">\<span class="name">CookieServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "Illuminate<span class="tag">\<span class="name">Database</span></span><span class="tag">\<span class="name">DatabaseServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "Illuminate<span class="tag">\<span class="name">Encryption</span></span><span class="tag">\<span class="name">EncryptionServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "Illuminate<span class="tag">\<span class="name">Filesystem</span></span><span class="tag">\<span class="name">FilesystemServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "Illuminate<span class="tag">\<span class="name">Pagination</span></span><span class="tag">\<span class="name">PaginationServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "Illuminate<span class="tag">\<span class="name">Session</span></span><span class="tag">\<span class="name">SessionServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "Illuminate<span class="tag">\<span class="name">Validation</span></span><span class="tag">\<span class="name">ValidationServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "Illuminate<span class="tag">\<span class="name">View</span></span><span class="tag">\<span class="name">ViewServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "App<span class="tag">\<span class="name">Providers</span></span><span class="tag">\<span class="name">AppServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "App<span class="tag">\<span class="name">Providers</span></span><span class="tag">\<span class="name">AuthServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "App<span class="tag">\<span class="name">Providers</span></span><span class="tag">\<span class="name">EventServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "App<span class="tag">\<span class="name">Providers</span></span><span class="tag">\<span class="name">RouteServiceProvider</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapped: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">RegisterProviders</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapping: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">BootProviders</span></span>" => []</span></span><br><span class="line"><span class="formula"> "bootstrapped: Illuminate<span class="tag">\<span class="name">Foundation</span></span><span class="tag">\<span class="name">Bootstrap</span></span><span class="tag">\<span class="name">BootProviders</span></span>" => []</span></span><br><span class="line"><span class="formula"> ]</span></span><br></pre></td></tr></table></figure></p><h4 id="DetectEnvironment"><a href="#DetectEnvironment" class="headerlink" title="DetectEnvironment"></a>DetectEnvironment</h4><p>环境变量配置。使用插件 vlucas/phpdotenv<br>读取.env 文件,将配置写入$_ENV, 和 $_SERVER 变量中<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">//DetectEnvironment 中的bootstrap 方法</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">bootstrap</span><span class="params">(Application $app)</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> <span class="keyword">try</span> {</span><br><span class="line"> Dotenv::load($app->environmentPath(), $app->environmentFile());</span><br><span class="line"> } <span class="keyword">catch</span> (InvalidArgumentException $e) {</span><br><span class="line"> <span class="comment">//</span></span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//默认设置环境为生产环境</span></span><br><span class="line"> $app->detectEnvironment(<span class="function"><span class="keyword">function</span> <span class="params">()</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> env(<span class="string">'APP_ENV'</span>, <span class="string">'production'</span>);</span><br><span class="line"> });</span><br><span class="line">}</span><br><span class="line"><span class="comment">//Dotenv中的load 和 setEnvironmentVariable</span></span><br><span class="line"><span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">load</span><span class="params">($path, $file = <span class="string">'.env'</span>)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> .......</span><br><span class="line"> $lines = file($filePath, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES); <span class="comment">//跳过空行</span></span><br><span class="line"> <span class="keyword">foreach</span> ($lines <span class="keyword">as</span> $line) {</span><br><span class="line"> <span class="comment">//忽略#号注释</span></span><br><span class="line"> <span class="keyword">if</span> (strpos(trim($line), <span class="string">'#'</span>) === <span class="number">0</span>) {</span><br><span class="line"> <span class="keyword">continue</span>;</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">if</span> (strpos($line, <span class="string">'='</span>) !== <span class="keyword">false</span>) {</span><br><span class="line"> <span class="keyword">static</span>::setEnvironmentVariable($line);</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"><span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">setEnvironmentVariable</span><span class="params">($name, $value = null)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">list</span>($name, $value) = <span class="keyword">static</span>::normaliseEnvironmentVariable($name, $value);</span><br><span class="line"> ....... <span class="comment">// 判断环境变量是否可以覆盖重写</span></span><br><span class="line"> putenv(<span class="string">"$name=$value"</span>);</span><br><span class="line"> $_ENV[$name] = $value;</span><br><span class="line"> $_SERVER[$name] = $value;</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h4 id="LoadConfiguration"><a href="#LoadConfiguration" class="headerlink" title="LoadConfiguration"></a>LoadConfiguration</h4><p>框架Config读取配置。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">bootstrap</span><span class="params">(Application $app)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $items = [];</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (file_exists($cached = $app->getCachedConfigPath())) {</span><br><span class="line"> $items = <span class="keyword">require</span> $cached;</span><br><span class="line"></span><br><span class="line"> $loadedFromCache = <span class="keyword">true</span>;</span><br><span class="line"> }</span><br><span class="line"> $app->instance(<span class="string">'config'</span>, $config = <span class="keyword">new</span> Repository($items));</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (! <span class="keyword">isset</span>($loadedFromCache)) {</span><br><span class="line"> <span class="keyword">$this</span>->loadConfigurationFiles($app, $config);</span><br><span class="line"> }</span><br><span class="line"> date_default_timezone_set($config[<span class="string">'app.timezone'</span>]);<span class="comment">// 时区</span></span><br><span class="line"></span><br><span class="line"> mb_internal_encoding(<span class="string">'UTF-8'</span>); <span class="comment">// 编码</span></span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>config 最终对应为 Repository类。其items 属性保存了config 目录下的文件名(key)、配置内容(value)组成的数组键值对。<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br></pre></td><td class="code"><pre><span class="line">Repository(<span class="class"><span class="keyword">class</span>)</span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line">items: <span class="keyword">array</span>:<span class="number">7</span> [▼</span><br><span class="line"> <span class="string">"app"</span> => <span class="keyword">array</span>:<span class="number">10</span> [▶]</span><br><span class="line"> <span class="string">"auth"</span> => <span class="keyword">array</span>:<span class="number">5</span> [▼</span><br><span class="line"><span class="string">"driver"</span> => <span class="string">"eloquent"</span></span><br><span class="line"><span class="string">"model"</span> => <span class="string">"App\User"</span></span><br><span class="line"><span class="string">"table"</span> => <span class="string">"users"</span></span><br><span class="line"><span class="string">"password"</span> => <span class="keyword">array</span>:<span class="number">3</span> [▼</span><br><span class="line"><span class="string">"email"</span> => <span class="string">"auth.passwords.link"</span></span><br><span class="line"><span class="string">"table"</span> => <span class="string">"password_resets"</span></span><br><span class="line"><span class="string">"expire"</span> => <span class="number">10</span></span><br><span class="line">]</span><br><span class="line"> <span class="string">"remember_token_expire"</span> => <span class="number">14400</span></span><br><span class="line"> ]</span><br><span class="line"> <span class="string">"cache"</span> => <span class="keyword">array</span>:<span class="number">3</span> [▶]</span><br><span class="line"> <span class="string">"database"</span> => <span class="keyword">array</span>:<span class="number">5</span> [▶]</span><br><span class="line"> <span class="string">"mail"</span> => <span class="keyword">array</span>:<span class="number">9</span> [▶]</span><br><span class="line"> <span class="string">"session"</span> => <span class="keyword">array</span>:<span class="number">12</span> [▶]</span><br><span class="line"> <span class="string">"view"</span> => <span class="keyword">array</span>:<span class="number">2</span> [▶]</span><br><span class="line"> ]</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h4 id="ConfigureLogging"><a href="#ConfigureLogging" class="headerlink" title="ConfigureLogging"></a>ConfigureLogging</h4><p>日志写入配置。使用monolog/monolog拓展。为容器添加log 对应的绑定实例(Monolog)，并设置默认写入路径<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">bootstrap</span><span class="params">(Application $app)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $log = <span class="keyword">$this</span>->registerLogger($app);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> ($app->hasMonologConfigurator()) {</span><br><span class="line"> call_user_func(</span><br><span class="line"> $app->getMonologConfigurator(), $log->getMonolog()</span><br><span class="line"> );</span><br><span class="line"> } <span class="keyword">else</span> {</span><br><span class="line"> <span class="comment">//为$log,即Monolog设日志内容的写入路径,默认为storage/logs/laravel.log</span></span><br><span class="line"> <span class="keyword">$this</span>->configureHandlers($app, $log); </span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"> <span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">registerLogger</span><span class="params">(Application $app)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $app->instance(<span class="string">'log'</span>, $log = <span class="keyword">new</span> Writer(</span><br><span class="line"> <span class="keyword">new</span> Monolog($app->environment()), $app[<span class="string">'events'</span>])</span><br><span class="line"> );</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> $log;</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h4 id="HandleExceptions"><a href="#HandleExceptions" class="headerlink" title="HandleExceptions"></a>HandleExceptions</h4><p>自定义异常处理Handler<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">bootstrap</span><span class="params">(Application $app)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->app = $app;</span><br><span class="line"></span><br><span class="line"> error_reporting(<span class="number">-1</span>);</span><br><span class="line"></span><br><span class="line"> set_error_handler([<span class="keyword">$this</span>, <span class="string">'handleError'</span>]); <span class="comment">// 错误处理</span></span><br><span class="line"></span><br><span class="line"> set_exception_handler([<span class="keyword">$this</span>, <span class="string">'handleException'</span>]); <span class="comment">//抛出异常处理</span></span><br><span class="line"></span><br><span class="line"> register_shutdown_function([<span class="keyword">$this</span>, <span class="string">'handleShutdown'</span>]); <span class="comment">//程序异常终止处理</span></span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (! $app->environment(<span class="string">'testing'</span>)) {</span><br><span class="line"> ini_set(<span class="string">'display_errors'</span>, <span class="string">'Off'</span>);</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h4 id="RegisterFacades"><a href="#RegisterFacades" class="headerlink" title="RegisterFacades"></a>RegisterFacades</h4><p>注册门面类 ,通过class_alias 为一个类创建别名<br><blockquote><footer><strong>class_alias</strong><cite><a href="http://php.net/manual/zh/function.class-alias.php" target="_blank" rel="noopener">php.net/manual/zh/function.class-alias.php</a></cite></footer></blockquote><br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">bootstrap</span><span class="params">(Application $app)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> Facade::clearResolvedInstances();</span><br><span class="line"></span><br><span class="line"> Facade::setFacadeApplication($app); <span class="comment">//为Facede 注入aPP实例</span></span><br><span class="line"> </span><br><span class="line"> AliasLoader::getInstance($app->make(<span class="string">'config'</span>)->get(<span class="string">'app.aliases'</span>))->register();</span><br><span class="line">}</span><br><span class="line"><span class="comment">//执行</span></span><br><span class="line"> spl_autoload_register([<span class="keyword">$this</span>, <span class="string">'load'</span>], <span class="keyword">true</span>, <span class="keyword">true</span>);</span><br><span class="line"></span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">load</span><span class="params">($alias)</span></span></span><br><span class="line"><span class="function"> </span>{ </span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">isset</span>(<span class="keyword">$this</span>->aliases[$alias])) {</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> class_alias(<span class="keyword">$this</span>->aliases[$alias], $alias);<span class="comment">//门面类实现方式</span></span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h4 id="RegisterProviders"><a href="#RegisterProviders" class="headerlink" title="RegisterProviders"></a>RegisterProviders</h4><p>读取config配置中的app.providers,对数组中所有进行注册<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">bootstrap</span><span class="params">(Application $app)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> $app->registerConfiguredProviders();</span><br><span class="line">}</span><br><span class="line"><span class="comment">// app类</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">registerConfiguredProviders</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">//读取bootstrap/cache/services.json缓存</span></span><br><span class="line"> $manifestPath = <span class="keyword">$this</span>->getCachedServicesPath();</span><br><span class="line"> (<span class="keyword">new</span> ProviderRepository(<span class="keyword">$this</span>, <span class="keyword">new</span> Filesystem, $manifestPath))</span><br><span class="line"> ->load(<span class="keyword">$this</span>->config[<span class="string">'app.providers'</span>]);</span><br><span class="line">}</span><br><span class="line"><span class="comment">// ProviderRepository</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">load</span><span class="params">(array $providers)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">//获取服务注册清单</span></span><br><span class="line"> $manifest = <span class="keyword">$this</span>->loadManifest();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->shouldRecompile($manifest, $providers)) {</span><br><span class="line"> $manifest = <span class="keyword">$this</span>->compileManifest($providers);</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//触发加载的服务</span></span><br><span class="line"> <span class="keyword">foreach</span> ($manifest[<span class="string">'when'</span>] <span class="keyword">as</span> $provider => $events) {</span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->registerLoadEvents($provider, $events);</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">foreach</span> ($manifest[<span class="string">'eager'</span>] <span class="keyword">as</span> $provider) {</span><br><span class="line"> <span class="keyword">$this</span>->app->register(<span class="keyword">$this</span>->createProvider($provider)); <span class="comment">// 注册时,写入fire 记录</span></span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//延迟加载的服务</span></span><br><span class="line"> <span class="keyword">$this</span>->app->addDeferredServices($manifest[<span class="string">'deferred'</span>]);</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h4 id="BootProviders"><a href="#BootProviders" class="headerlink" title="BootProviders"></a>BootProviders</h4><p>启用所有ServerProvider的boot方法。这块的关注点在于RouteServiceProvider<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">boot</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->booted) {</span><br><span class="line"> <span class="keyword">return</span>;</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//调用booting中 class 的回调</span></span><br><span class="line"> <span class="keyword">$this</span>->fireAppCallbacks(<span class="keyword">$this</span>->bootingCallbacks);</span><br><span class="line"> <span class="comment">//过程极度漫长，尤其是routeServiceProvicer</span></span><br><span class="line"> array_walk(<span class="keyword">$this</span>->serviceProviders, <span class="function"><span class="keyword">function</span> <span class="params">($p)</span> </span>{</span><br><span class="line"> <span class="keyword">$this</span>->bootProvider($p);</span><br><span class="line"> });</span><br><span class="line"> <span class="keyword">$this</span>->booted = <span class="keyword">true</span>;</span><br><span class="line"> </span><br><span class="line"> <span class="keyword">$this</span>->fireAppCallbacks(<span class="keyword">$this</span>->bootedCallbacks);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">bootProvider</span><span class="params">(ServiceProvider $provider)</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> <span class="comment">//如果serviceProvider 存在boot方法, 则执行其boot方法</span></span><br><span class="line"> <span class="comment">//(通过APP\providers\ class的boot执行 parent::boot() ,即foundation\support\providers)</span></span><br><span class="line"> <span class="keyword">if</span> (method_exists($provider, <span class="string">'boot'</span>)) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->call([$provider, <span class="string">'boot'</span>]);</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>RouteServiceProvider最终会在map方法进行路由载入<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">map</span><span class="params">(Router $router)</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> $router->group([<span class="string">'namespace'</span> => <span class="keyword">$this</span>->namespace], <span class="function"><span class="keyword">function</span> <span class="params">($router)</span> </span>{</span><br><span class="line"> <span class="keyword">require</span> app_path(<span class="string">'Http/routes.php'</span>); <span class="comment">//app/Http/routes.php</span></span><br><span class="line"> });</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> bootstrap </tag>
<tag> bootProviders </tag>
<tag> RouteServiceProvider </tag>
</tags>
</entry>
<entry>
<title>request实例</title>
<link href="/request-instance.html"/>
<url>/request-instance.html</url>
<content type="html"><![CDATA[<p>  通过index.php继续往下走, Request实例的初始化<br><figure class="highlight elixir"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line"><span class="variable">$request</span> = Illuminate\Http\<span class="symbol">Request:</span><span class="symbol">:capture</span>()</span><br></pre></td></tr></table></figure><br>使用拓展 Symfony/Http-Foundation<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">use</span> <span class="title">Symfony</span>\<span class="title">Component</span>\<span class="title">HttpFoundation</span>\<span class="title">Request</span> <span class="title">as</span> <span class="title">SymfonyRequest</span>;</span><br><span class="line"><span class="keyword">public</span> <span class="keyword">static</span> <span class="function"><span class="keyword">function</span> <span class="title">capture</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">//允许请求方法重新,主要用于DELETE PUT方法的最终转换</span></span><br><span class="line"> <span class="keyword">static</span>::enableHttpMethodParameterOverride();</span><br><span class="line"> </span><br><span class="line"> <span class="comment">//根据php超级全局变量$_SERVER的数据,创建一个Request 类</span></span><br><span class="line"> $fromGlobals = SymfonyRequest::createFromGlobals(); </span><br><span class="line"> <span class="comment">//最终返回 Illuminate\Http\Request类</span></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">static</span>::createFromBase($fromGlobals); </span><br><span class="line">}</span><br></pre></td></tr></table></figure><br><a id="more"></a><br>①设置enableHttpMethodParameterOverride = true， 因为框架在设置DELETE PUT 等请求时,实质是通过表单伪造完成的《input type=”hidden” name=”_method” value=”PUT”》<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">getMethod</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">null</span> === <span class="keyword">$this</span>->method) {</span><br><span class="line"> <span class="keyword">$this</span>->method = strtoupper(<span class="keyword">$this</span>->server->get(<span class="string">'REQUEST_METHOD'</span>, <span class="string">'GET'</span>));</span><br><span class="line"></span><br><span class="line"> <span class="keyword">if</span> (<span class="string">'POST'</span> === <span class="keyword">$this</span>->method) {</span><br><span class="line"> <span class="keyword">if</span> ($method = <span class="keyword">$this</span>->headers->get(<span class="string">'X-HTTP-METHOD-OVERRIDE'</span>)) {</span><br><span class="line"> <span class="keyword">$this</span>->method = strtoupper($method);</span><br><span class="line"> } <span class="keyword">elseif</span> (<span class="keyword">self</span>::$httpMethodParameterOverride) {</span><br><span class="line"> <span class="keyword">$this</span>->method = strtoupper(<span class="keyword">$this</span>->request->get(<span class="string">'_method'</span>, <span class="keyword">$this</span>->query->get(<span class="string">'_method'</span>, <span class="string">'POST'</span>)));</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->method;</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>②$fromGlobals实质是SymfonyRequest类。<font color="#f56954">其属性值本身源于PHP自带的超级全局变量$_SERVER。</font></p><p>③最后是通过duplicate方法,将SymfonyRequest属性值复制到Illuminate\Http\Request类中,并最终返回。</p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> Request实例 </tag>
</tags>
</entry>
<entry>
<title>Application初始化</title>
<link href="/app-instance.html"/>
<url>/app-instance.html</url>
<content type="html"><![CDATA[<p>  之前已完成Application的自动引入,本篇分享下面这行代码的实现细节 </p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">$app = <span class="keyword">new</span> Illuminate\Foundation\Application(</span><br><span class="line"> realpath(<span class="keyword">__DIR__</span>.<span class="string">'/../'</span>) <span class="comment">//参数 basePath 为项目根目录的<绝对路径></span></span><br><span class="line">);</span><br></pre></td></tr></table></figure><h4 id="构造函数"><a href="#构造函数" class="headerlink" title="构造函数"></a>构造函数</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">($basePath = null)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->registerBaseBindings(); </span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->registerBaseServiceProviders(); <span class="comment">//绑定基本服务（event router）</span></span><br><span class="line"> </span><br><span class="line"> <span class="keyword">$this</span>->registerCoreContainerAliases(); <span class="comment">//设置容器别名</span></span><br><span class="line"> </span><br><span class="line"> <span class="keyword">if</span> ($basePath) {</span><br><span class="line"> <span class="keyword">$this</span>->setBasePath($basePath); <span class="comment">//设置基本项目的关键文件</span></span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><a id="more"></a><h4 id="注册基本绑定"><a href="#注册基本绑定" class="headerlink" title="注册基本绑定"></a>注册基本绑定</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">registerBaseBindings</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">static</span>::setInstance(<span class="keyword">$this</span>); <span class="comment">//使用单例模式,将静态属性instance 赋值为自身实例</span></span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->instance(<span class="string">'app'</span>, <span class="keyword">$this</span>);<span class="comment">//将属性instances['app'] 赋值为自身实例</span></span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->instance(<span class="string">'Illuminate\Container\Container'</span>, <span class="keyword">$this</span>); <span class="comment">//同上</span></span><br><span class="line">}</span><br></pre></td></tr></table></figure><h4 id="注册基本服务"><a href="#注册基本服务" class="headerlink" title="注册基本服务"></a>注册基本服务</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">registerBaseServiceProviders</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> <span class="keyword">$this</span>->register(<span class="keyword">new</span> EventServiceProvider(<span class="keyword">$this</span>)); <span class="comment">//注册事件服务, app实例作为参数</span></span><br><span class="line"></span><br><span class="line"> <span class="keyword">$this</span>->register(<span class="keyword">new</span> RoutingServiceProvider(<span class="keyword">$this</span>)); <span class="comment">//注册路由服务 ,app实例作为参数</span></span><br><span class="line">}</span><br><span class="line"></span><br></pre></td></tr></table></figure><h5 id="app的register方法"><a href="#app的register方法" class="headerlink" title="app的register方法"></a>app的register方法</h5><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">register</span><span class="params">($provider, $options = [], $force = false)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">if</span> (($registered = <span class="keyword">$this</span>->getProvider($provider)) && ! $force) {</span><br><span class="line"> <span class="keyword">return</span> $registered;</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//如果是字符串，则解析为对应的class实例</span></span><br><span class="line"> <span class="keyword">if</span> (is_string($provider)) {</span><br><span class="line"> $provider = <span class="keyword">$this</span>->resolveProviderClass($provider); <span class="comment">// 即$provider = new $provider()</span></span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//执行服务提供者的注册方法</span></span><br><span class="line"> $provider->register();</span><br><span class="line"></span><br><span class="line"> <span class="keyword">foreach</span> ($options <span class="keyword">as</span> $key => $value) {</span><br><span class="line"> <span class="keyword">$this</span>[$key] = $value;</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//将服务提供者标记为已注册</span></span><br><span class="line"> <span class="keyword">$this</span>->markAsRegistered($provider);</span><br><span class="line"> <span class="comment">//如果所有的服务已经启用(一个后续环节)之后,重新注册时，会执行该$provider的boot方法</span></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->booted) {</span><br><span class="line"> <span class="keyword">$this</span>->bootProvider($provider);</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> $provider;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">getProvider</span><span class="params">($provider)</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> $name = is_string($provider) ? $provider : get_class($provider);</span><br><span class="line"> <span class="comment">// Arr类(Illuminate\Support\Arr,以及Illuminate\Support\Str),是框架数组，字符串帮助函数的底层实现</span></span><br><span class="line"> <span class="comment">//由于这里使用first()方法,意味着只要找到数组中符合条件的第一项，就返回。注册同一个服务，返回最早注册的。</span></span><br><span class="line"> <span class="keyword">return</span> Arr::first(<span class="keyword">$this</span>->serviceProviders, <span class="function"><span class="keyword">function</span> <span class="params">($key, $value)</span> <span class="title">use</span> <span class="params">($name)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> $value <span class="keyword">instanceof</span> $name;</span><br><span class="line"> });</span><br><span class="line">}</span><br></pre></td></tr></table></figure><h5 id="Event的register方法"><a href="#Event的register方法" class="headerlink" title="Event的register方法"></a>Event的register方法</h5><p>执行上文中 <strong>$provider->register()</strong> 方法，即执行new EventServiceProvider($this) 中的register()方法。<font color="#f56954">所有的服务提供者基本都是为当前服务绑定一个可以返回 真正执行者 (如这里的Dispatcher实例) 的闭包。服务的注册方法中一般会存在一个或多个绑定。</font><br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line"></span><br><span class="line"><span class="comment">//所有的服务提供者都会继承ServiceProvider,也就是都有一个特定属性app,即Application实例</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">EventServiceProvider</span> <span class="keyword">extends</span> <span class="title">ServiceProvider</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">register</span><span class="params">()</span></span></span><br><span class="line"><span class="function"> </span>{ </span><br><span class="line"> <span class="keyword">$this</span>->app->singleton(<span class="string">'events'</span>, <span class="function"><span class="keyword">function</span> <span class="params">($app)</span> </span>{</span><br><span class="line"> <span class="comment">// 获取分配器Dispatcher实例，并为该实例设置队列解析者</span></span><br><span class="line"> <span class="keyword">return</span> (<span class="keyword">new</span> Dispatcher($app))->setQueueResolver(<span class="function"><span class="keyword">function</span> <span class="params">()</span> <span class="title">use</span> <span class="params">($app)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> $app->make(<span class="string">'Illuminate\Contracts\Queue\Factory'</span>);</span><br><span class="line"> });</span><br><span class="line"> });</span><br><span class="line"> }</span><br><span class="line">}</span><br><span class="line"></span><br></pre></td></tr></table></figure></p><h5 id="singleton方法"><a href="#singleton方法" class="headerlink" title="singleton方法"></a>singleton方法</h5><p>  容器singleton方法，<font color="#f56954">使用单例模式注册，即多次执行make(‘events’),返回的同一个实例</font><br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">singleton</span><span class="params">($abstract, $concrete = null)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->bind($abstract, $concrete, <span class="keyword">true</span>); <span class="comment">// 第三个参数true, 表示shared 共享</span></span><br><span class="line">}</span><br><span class="line"><span class="comment">//当前注册服务添加至bindings中</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">bind</span><span class="params">($abstract, $concrete = null, $shared = false)</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> <span class="keyword">$this</span>->bindings[$abstract] = compact(<span class="string">'concrete'</span>, <span class="string">'shared'</span>);</span><br><span class="line">}</span><br><span class="line"><span class="comment">//容器中的make方法</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">make</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">isset</span>(<span class="keyword">$this</span>->instances[$abstract])) {</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">$this</span>->instances[$abstract];</span><br><span class="line"> }</span><br><span class="line"> <span class="comment">//通过singleton，shared = true, 之后make会之前返回已经实例化好的类</span></span><br><span class="line"> <span class="keyword">if</span> (<span class="keyword">$this</span>->isShared($abstract)) { </span><br><span class="line"> <span class="keyword">$this</span>->instances[$abstract] = $object;</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><h5 id="Router的register方法"><a href="#Router的register方法" class="headerlink" title="Router的register方法"></a>Router的register方法</h5><p>RoutingServiceProvider的register方法一共有6个注册<br>  registerRouter      注册路由<br>  registerUrlGenerator   url 生成器<br>  registerRedirector     路由重定向<br>  registerResponseFactory 响应<br>  <del>registerPsrRequest   框架底层本身不存在绑定所需返回类,需要特有拓展</del><br>  <del>registerPsrRespons   框架底层本身不存在绑定所需返回类</del></p><p>这里只分析registerRouter,关注点放在<font color="#f56954">$this->app[‘router’]</font> 和 <font color="#f56954">share()方法</font><br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">registerRouter</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{ </span><br><span class="line"> <span class="keyword">$this</span>->app[<span class="string">'router'</span>] = <span class="keyword">$this</span>->app->share(<span class="function"><span class="keyword">function</span> <span class="params">($app)</span> </span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> Router($app[<span class="string">'events'</span>], $app);</span><br><span class="line"> });</span><br><span class="line"> <span class="comment">//又会触发build, 执行所绑定的闭包 </span></span><br><span class="line"> </span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>  $this->app 是Application类,因为该类implements了PHP自带的ArrayAccess接口,所以支持对象以数组方式使用。$this->app[key] = value，这种赋值运算会触发offsetSet方法(最终为容器bing方法),而$this->app[key]，这种取值运算会触发offsetGet方法(最终为容器make方法)。<br><blockquote><footer><strong>ArrayAccess接口</strong><cite><a href="http://php.net/manual/en/class.arrayaccess.php" target="_blank" rel="noopener">php.net/manual/en/class.arrayaccess.php</a></cite></footer></blockquote><br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">share</span><span class="params">(Closure $closure)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="function"><span class="keyword">function</span> <span class="params">($container)</span> <span class="title">use</span> <span class="params">($closure)</span> </span>{</span><br><span class="line"> <span class="keyword">static</span> $object;</span><br><span class="line"> <span class="keyword">if</span> (is_null($object)) {</span><br><span class="line"> $object = $closure($container);</span><br><span class="line"> }</span><br><span class="line"> <span class="keyword">return</span> $object;</span><br><span class="line"> };</span><br><span class="line">}</span><br></pre></td></tr></table></figure><br>  首次执行make 时, router 所绑定的闭包函数的static $object 会变成 new Router($this->app[‘events’], $this->app)，再次make 会直接返回 已存在的实例$object。与singleton比较相似。</p><h4 id="注册基本路径"><a href="#注册基本路径" class="headerlink" title="注册基本路径"></a>注册基本路径</h4><p>  将基本文件路径存入容器的instances[]中,方便通过make(‘path’)直接获取<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br></pre></td><td class="code"><pre><span class="line"> <span class="keyword">protected</span> <span class="function"><span class="keyword">function</span> <span class="title">bindPathsInContainer</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"> <span class="keyword">$this</span>->instance(<span class="string">'path'</span>, <span class="keyword">$this</span>->path()); <span class="comment">// $this->basePath.DIRECTORY_SEPARATOR.'app'</span></span><br><span class="line"></span><br><span class="line"> <span class="keyword">foreach</span> ([<span class="string">'base'</span>, <span class="string">'config'</span>, <span class="string">'database'</span>, <span class="string">'lang'</span>, <span class="string">'public'</span>, <span class="string">'storage'</span>] <span class="keyword">as</span> $path) {</span><br><span class="line"> <span class="keyword">$this</span>->instance(<span class="string">'path.'</span>.$path, <span class="keyword">$this</span>->{$path.<span class="string">'Path'</span>}());</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure></p><div style="height: 200px;padding: 0px 0px; "><br> <img src="/images/base_instance.png" align="left" style="margin:-20px 0px auto 0px;float: left;"><br> <div style="float: right; width:400px;height: 180px;margin-top: -70px; text-align:left;"><br> app实例初始化结束后,其instances属性:<br> ①app自身<br> ②容器实例<br> ③事件实例<br> ④基本文件根路径<br> </div><br></div><p>最后绑定核心类、控制台、异常处理类,这种写法的实质是 如通过执行make(‘Illuminate\Contracts\Http\Kernel’),返回App\Http\Kernel类<br><figure class="highlight ruby"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br></pre></td><td class="code"><pre><span class="line">$app->singleton(</span><br><span class="line"> Illuminate\Contracts\Http\Kernel::<span class="class"><span class="keyword">class</span>,</span></span><br><span class="line"> App\Http\Kernel::<span class="class"><span class="keyword">class</span></span></span><br><span class="line">);</span><br><span class="line"></span><br><span class="line">$app->singleton(</span><br><span class="line"> Illuminate\Contracts\Console\Kernel::<span class="class"><span class="keyword">class</span>,</span></span><br><span class="line"> App\Console\Kernel::<span class="class"><span class="keyword">class</span></span></span><br><span class="line">);</span><br><span class="line"></span><br><span class="line">$app->singleton(</span><br><span class="line"> Illuminate\Contracts\Debug\ExceptionHandler::<span class="class"><span class="keyword">class</span>,</span></span><br><span class="line"> App\Exceptions\Handler::<span class="class"><span class="keyword">class</span></span></span><br><span class="line">);</span><br><span class="line"><span class="keyword">return</span> $app;</span><br></pre></td></tr></table></figure></p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> app实例 </tag>
<tag> singleton方法 </tag>
<tag> share方法 </tag>
</tags>
</entry>
<entry>
<title>容器与控制反转</title>
<link href="/container.html"/>
<url>/container.html</url>
<content type="html"><![CDATA[<p>  由于这些都是一些概念性的内容，为了方便理解，我们需要尽可能的用具象的东西来说明。在此之前，先简单说明一下<font color="LightCoral">控制反转</font> 和 <font color="LightCoral">依赖注入</font>：<br><blockquote><p>控制反转 (Inversion Of Control,Ioc)，是面向对象编程中的一种设计原则，可以用来减低计算机代码之间的耦合度。依赖注入 (Dependency Injection, DI),只是其实现方式的其中一种，还有一种叫”依赖查找”(Dependency Lookup)。通过控制反转，对象在被创建的时候，由一个调控系统内所有对象的外界实体，将其所依赖的对象的引用传递给它。也可以说，依赖被注入到对象中。</p></blockquote>关于依赖查找，个人表示并没研究过，这里我们主要理解 依赖注入 。下面通过比较用 <font color="LightSlateBlue">传统方式、工厂模式、容器 </font>去实例化类，并满足该类所有属性需求 ，实现过程中的不同，从而理解容器。<br><a id="more"></a><br>假设我们现在有一个目标：制造一辆山寨汽车 Car</p><ul><li>需要有轮胎 Tyre</li><li>需要有窗户 window</li><li>需要有座椅 Seat<h4 id="传统方式"><a href="#传统方式" class="headerlink" title="传统方式"></a>传统方式</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 汽车</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Car</span> </span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">$this</span>->tyre = <span class="keyword">new</span> Tyre();</span><br><span class="line"><span class="keyword">$this</span>->window = <span class="keyword">new</span> window();</span><br><span class="line"><span class="keyword">$this</span>->seat = <span class="keyword">new</span> Seat();</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line"><span class="comment">//轮胎类</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Tyre</span></span>{}</span><br><span class="line"><span class="comment">//窗户</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">window</span></span>{}</span><br><span class="line"><span class="comment">//座椅</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Seat</span></span>{}</span><br></pre></td></tr></table></figure></li></ul><p>关于这种传统模式的问题:<br>① 在实际情况中，一个类如果有很多个需要实例化的属性,那我们就需要一直使用new 运算符，严重影响代码可读性<br>② 因为某种原因,其中一个属性类名发生了变化,如Seat变成了Chair,那么只要有用到new Seat的地方都要改<br>③ 如果属性类实例化时，还需要其他实例（依赖注入）,怎么办,按传统写法可能就变成</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 汽车</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Car</span> </span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">$this</span>->tyre = <span class="keyword">new</span> Tyre();</span><br><span class="line"></span><br><span class="line">$sander = <span class="keyword">new</span> Sander();</span><br><span class="line">$glass = <span class="keyword">new</span> Glass($sander); <span class="comment">//窗户需要打磨</span></span><br><span class="line"></span><br><span class="line"><span class="keyword">$this</span>->window = <span class="keyword">new</span> window($glass); <span class="comment">// 窗户需要玻璃, 如果还有更深层次呢?</span></span><br><span class="line"><span class="keyword">$this</span>->seat = <span class="keyword">new</span> Seat();</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line"><span class="comment">//轮胎类</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Tyre</span></span>{}</span><br><span class="line"><span class="comment">//窗户</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">window</span></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">($glass)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">$this</span>->glass = $glass;</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line"><span class="comment">//座椅</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Seat</span></span>{}</span><br><span class="line"><span class="comment">//玻璃</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Glass</span></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">($sander)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">$this</span>->sander = $sander;</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line"><span class="comment">//打磨机</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Sander</span></span>{</span><br><span class="line"></span><br><span class="line">}</span><br></pre></td></tr></table></figure><h4 id="工厂模式"><a href="#工厂模式" class="headerlink" title="工厂模式"></a>工厂模式</h4><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br></pre></td><td class="code"><pre><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Car</span> </span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">$this</span>->factory = <span class="keyword">new</span> Factory();</span><br><span class="line"></span><br><span class="line">$list = [<span class="string">'Tyre'</span>,<span class="string">'Window'</span>,<span class="string">'Seat'</span>];</span><br><span class="line"><span class="keyword">foreach</span>($list <span class="keyword">as</span> $class)</span><br><span class="line">{</span><br><span class="line"><span class="keyword">$this</span>->$class = <span class="keyword">$this</span>->factory->make($class,<span class="string">'param'</span>);</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Factory</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"> <span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">make</span><span class="params">($class,$param)</span></span></span><br><span class="line"><span class="function"> </span>{</span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> $class($param);</span><br><span class="line"> }</span><br><span class="line">}</span><br></pre></td></tr></table></figure><p>工厂模式可以很好的解决传统模式中的①和②两个问题,工厂模式一般就已经可以满足正常开发需求;</p><h4 id="容器Container"><a href="#容器Container" class="headerlink" title="容器Container"></a>容器Container</h4><p>真正的主角登场。容器，顾名思义一个可以装东西的’盒子’。而里面装的是什么，正是我们需要考究的。<br><em>还是用制造山寨汽车举例，我需要一个容器，希望里面有轮胎、窗户、座椅，这样我可以直接用。那么我用了，下一个制造者可能有没得用了,当然这只是一种粗浅的比喻 。</em> <font color="#f56954">最好的解决办法就是容器里有的是制造轮胎、窗户的方法,我通过该方法，可以获取想要的实例。而容器本身就是一种高级工厂模式。</font><br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br></pre></td><td class="code"><pre><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Container</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line">$protected $bindings; <span class="comment">// 存放实例制造所需的方法</span></span><br><span class="line">$protected $instances; <span class="comment">//存放已经实例化好的类</span></span><br><span class="line"><span class="comment">//</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">bind</span><span class="params">($abstract, Closure $concrete)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">$this</span>->bindings[$abstract] = $concrete;</span><br><span class="line">}</span><br><span class="line"><span class="comment">//</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">make</span><span class="params">($abstract, $param=[])</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">if</span>(!<span class="keyword">isset</span>(<span class="keyword">$this</span>->bindings[$abstract])){ <span class="keyword">return</span> <span class="keyword">false</span>; }</span><br><span class="line">$concrete = <span class="keyword">$this</span>->bindings[$abstract];</span><br><span class="line"></span><br><span class="line"><span class="keyword">return</span> $concrete(<span class="keyword">$this</span>,$param); </span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">$container = <span class="keyword">new</span> Container();</span><br><span class="line"></span><br><span class="line">$container->bind(<span class="string">'tyre'</span>,<span class="function"><span class="keyword">function</span><span class="params">($container,$param)</span></span>{</span><br><span class="line"><span class="keyword">return</span> <span class="keyword">new</span> Tyre;</span><br><span class="line">});</span><br><span class="line"></span><br><span class="line">$container->bind(<span class="string">'window'</span>,<span class="function"><span class="keyword">function</span><span class="params">($container,$param)</span></span>{</span><br><span class="line">$glass = $container->make($param); <span class="comment">//通过容器实例化,并注入依赖</span></span><br><span class="line"><span class="keyword">return</span> <span class="keyword">new</span> window($glass);</span><br><span class="line">});</span><br><span class="line"></span><br><span class="line">$car = <span class="keyword">new</span> Car();</span><br><span class="line">$car->tyre = $container->make(<span class="string">'tyre'</span>);</span><br><span class="line">$car->window = $container->make(<span class="string">'window'</span>,<span class="string">'glass'</span>);</span><br></pre></td></tr></table></figure></p><p>容器的简单形式就算完成。面临最大的问题就是依赖注入的处理不够好</p><h4 id="依赖自动注入"><a href="#依赖自动注入" class="headerlink" title="依赖自动注入"></a>依赖自动注入</h4><p>框架中容器一般是不会为小的属性类(如Window,Tyre,Glass等)单独绑定实现方法的。这种就会通过ReflectionClass类来实现<br><blockquote><footer><strong>PHP反射类文档</strong><cite><a href="http://www.php.net/manual/en/book.reflection.php" target="_blank" rel="noopener">www.php.net/manual/en/book.reflection.php</a></cite></footer></blockquote></p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br><span class="line">40</span><br><span class="line">41</span><br><span class="line">42</span><br><span class="line">43</span><br><span class="line">44</span><br><span class="line">45</span><br><span class="line">46</span><br><span class="line">47</span><br><span class="line">48</span><br><span class="line">49</span><br><span class="line">50</span><br><span class="line">51</span><br><span class="line">52</span><br><span class="line">53</span><br><span class="line">54</span><br><span class="line">55</span><br><span class="line">56</span><br><span class="line">57</span><br><span class="line">58</span><br><span class="line">59</span><br><span class="line">60</span><br><span class="line">61</span><br><span class="line">62</span><br><span class="line">63</span><br><span class="line">64</span><br><span class="line">65</span><br><span class="line">66</span><br><span class="line">67</span><br><span class="line">68</span><br><span class="line">69</span><br><span class="line">70</span><br><span class="line">71</span><br><span class="line">72</span><br><span class="line">73</span><br><span class="line">74</span><br><span class="line">75</span><br><span class="line">76</span><br><span class="line">77</span><br><span class="line">78</span><br><span class="line">79</span><br><span class="line">80</span><br><span class="line">81</span><br><span class="line">82</span><br><span class="line">83</span><br><span class="line">84</span><br><span class="line">85</span><br><span class="line">86</span><br><span class="line">87</span><br><span class="line">88</span><br><span class="line">89</span><br><span class="line">90</span><br><span class="line">91</span><br><span class="line">92</span><br><span class="line">93</span><br><span class="line">94</span><br><span class="line">95</span><br><span class="line">96</span><br><span class="line">97</span><br><span class="line">98</span><br><span class="line">99</span><br><span class="line">100</span><br><span class="line">101</span><br><span class="line">102</span><br><span class="line">103</span><br><span class="line">104</span><br><span class="line">105</span><br><span class="line">106</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">// 汽车</span></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Car</span> </span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">($container)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">$this</span>->container = $container;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">getWindow</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="comment">//window 在容器中并未绑定,通过Reflection来实现</span></span><br><span class="line"><span class="keyword">$this</span>->window = <span class="keyword">$this</span>->container->make(<span class="string">'window'</span>);</span><br><span class="line"></span><br><span class="line"><span class="keyword">return</span> <span class="keyword">$this</span>->window;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">getTyre</span><span class="params">()</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">$this</span>->tyre = <span class="keyword">$this</span>->container->make(<span class="string">'tyre'</span>);</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Window</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">(Glass $glass)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">$this</span>->glass = $glass;</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Tyre</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">__construct</span><span class="params">($cons = <span class="number">123</span>)</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">$this</span>->cons = $cons;</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Glass</span></span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"></span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="class"><span class="keyword">class</span> <span class="title">Container</span> </span></span><br><span class="line"><span class="class"></span>{</span><br><span class="line"><span class="keyword">protected</span> $bindings;</span><br><span class="line"><span class="keyword">protected</span> $instances;</span><br><span class="line"></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">bind</span><span class="params">($abstract, Closure $concrete)</span> </span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">if</span> (is_null($concrete)) {</span><br><span class="line"> $concrete = $abstract;</span><br><span class="line"> }</span><br><span class="line"></span><br><span class="line"> <span class="comment">//绑定闭包</span></span><br><span class="line"> <span class="keyword">$this</span>->bindings[$abstract] = $concrete;</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line"><span class="comment">/**</span></span><br><span class="line"><span class="comment"> * 这里 拿 'window'举例</span></span><br><span class="line"><span class="comment"> */</span></span><br><span class="line"><span class="keyword">public</span> <span class="function"><span class="keyword">function</span> <span class="title">make</span><span class="params">($concrete ,array $parameters=[])</span></span></span><br><span class="line"><span class="function"></span>{</span><br><span class="line"><span class="keyword">if</span>(<span class="keyword">isset</span>(<span class="keyword">$this</span>->bindings[$concrete]))</span><br><span class="line">{</span><br><span class="line">$concrete = <span class="keyword">$this</span>->bindings[$concrete];</span><br><span class="line"><span class="keyword">return</span> $concrete(<span class="keyword">$this</span>, $parameters);</span><br><span class="line">}</span><br><span class="line">$reflector = <span class="keyword">new</span> ReflectionClass($concrete);</span><br><span class="line"> <span class="comment">//反射类是否可以实例化（如接口）</span></span><br><span class="line"> <span class="keyword">if</span> (! $reflector->isInstantiable()) {</span><br><span class="line"> $message = <span class="string">"该反射类不可实例化"</span>;</span><br><span class="line"> <span class="keyword">throw</span> <span class="keyword">new</span> <span class="keyword">Exception</span>($message);</span><br><span class="line"> }</span><br><span class="line"> $constructor = $reflector->getConstructor();</span><br><span class="line"> <span class="keyword">if</span> (is_null($constructor)) { </span><br><span class="line"> <span class="keyword">return</span> <span class="keyword">new</span> $concrete;</span><br><span class="line"> }</span><br><span class="line"> $dependencies = $constructor->getParameters(); <span class="comment">//获取构造函数被注入的依赖</span></span><br><span class="line"></span><br><span class="line"> $instances = []; <span class="comment">//获取依赖实例</span></span><br><span class="line"> <span class="keyword">foreach</span> ($dependencies <span class="keyword">as</span> $parameter) {</span><br><span class="line"> $dependency = $parameter->getClass();</span><br><span class="line"> <span class="keyword">if</span>(is_null($dependency))</span><br><span class="line"> {</span><br><span class="line"> $instances[] = $parameter->getDefaultValue();</span><br><span class="line"> }<span class="keyword">else</span></span><br><span class="line"> {</span><br><span class="line"> $instances[] = <span class="keyword">$this</span>->make($parameter->getClass()->name); <span class="comment">//递归,实例化所有依赖</span></span><br><span class="line"> }</span><br><span class="line"> </span><br><span class="line"> }</span><br><span class="line"><span class="keyword">return</span> $reflector->newInstanceArgs($instances);</span><br><span class="line">}</span><br><span class="line">}</span><br><span class="line"></span><br><span class="line">$c = <span class="keyword">new</span> Container();</span><br><span class="line"><span class="comment">// </span></span><br><span class="line"></span><br><span class="line">$c->bind(<span class="string">'car'</span>,<span class="function"><span class="keyword">function</span><span class="params">($c)</span></span>{</span><br><span class="line"><span class="keyword">return</span> <span class="keyword">new</span> Car($c);</span><br><span class="line">});</span><br><span class="line"></span><br><span class="line">$car = $c->make(<span class="string">'car'</span>);</span><br><span class="line">$window = $car->getWindow(); </span><br><span class="line">var_dump($window);</span><br></pre></td></tr></table></figure><p>容器的概念理解好后,下一篇分享 application 类的实例化</p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> 容器 </tag>
<tag> 控制反转 </tag>
<tag> 依赖注入 </tag>
</tags>
</entry>
<entry>
<title>Application.php的引入</title>
<link href="/app-require.html"/>
<url>/app-require.html</url>
<content type="html"><![CDATA[<p>   <font color="red">再次说明：整个代码学习都是基于index.php，进行代码逐行分析。 根据报错，对照完整的源码进行文件补充。</font></p><h5 id="引入composer自动载入"><a href="#引入composer自动载入" class="headerlink" title="引入composer自动载入"></a>引入composer自动载入</h5><p>关于composer自动载入包的安装，只要的我们的根目录下新建composer.json,并写入<br><figure class="highlight"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">"require" : { </span><br><span class="line">"php" : ">=5.5.9"</span><br><span class="line">}</span><br></pre></td></tr></table></figure> 然后执行 <em>composer install</em> 命令</p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br></pre></td><td class="code"><pre><span class="line"><span class="comment">/**** 当前文件位置 index.php ****/</span></span><br><span class="line"><span class="keyword">require</span> <span class="keyword">__DIR__</span>.<span class="string">'/../bootstrap/autoload.php'</span>; </span><br><span class="line"></span><br><span class="line"></span><br><span class="line"><span class="comment">/**** 当前文件位置 bootstrap/autoload.php ****/</span></span><br><span class="line">define(<span class="string">'LARAVEL_START'</span>, microtime(<span class="keyword">true</span>));</span><br><span class="line"></span><br><span class="line"><span class="keyword">require</span> <span class="keyword">__DIR__</span>.<span class="string">'/../vendor/autoload.php'</span>; <span class="comment">// 引入Composer autoload</span></span><br><span class="line"></span><br><span class="line"><span class="comment">//获取编译缓存，所有用到的类及方法的集合文件</span></span><br><span class="line"></span><br><span class="line">$compiledPath = <span class="keyword">__DIR__</span>.<span class="string">'/cache/compiled.php'</span>;</span><br><span class="line"></span><br><span class="line"><span class="keyword">if</span> (file_exists($compiledPath)) { </span><br><span class="line"> <span class="keyword">require</span> $compiledPath;</span><br><span class="line">}</span><br><span class="line"></span><br></pre></td></tr></table></figure><p>到这里,类文件的自动载入工作就算基本完成了。<br><a id="more"></a></p><h5 id="引入Application-php"><a href="#引入Application-php" class="headerlink" title="引入Application.php"></a>引入Application.php</h5><p>接下来会看到的代码就是<br><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br></pre></td><td class="code"><pre><span class="line">$app = <span class="keyword">new</span> Illuminate\Foundation\Application(</span><br><span class="line"> realpath(<span class="keyword">__DIR__</span>.<span class="string">'/../'</span>)</span><br><span class="line">);</span><br></pre></td></tr></table></figure></p><p>  首先需要创建 <em>vendor/laravel/framework/src/Illuminate/Foundation/Application.php </em>文件(建议为空类,测试自动引入是否成功)。那么通过composer自动引入Application.php？ 通过composer.json，定义路径,然后执行 <em>composer dump-autoload </em>命令。</p><figure class="highlight prolog"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br></pre></td><td class="code"><pre><span class="line"><span class="string">"autoload"</span>: {</span><br><span class="line"> <span class="string">"classmap"</span>: [</span><br><span class="line"> <span class="string">"vendor/laravel/framework/src/Illuminate"</span>,</span><br><span class="line"> <span class="string">"app"</span></span><br><span class="line"></span><br><span class="line"> ],</span><br><span class="line"> <span class="string">"files"</span> : [</span><br><span class="line"> <span class="string">"vendor/laravel/framework/src/Illuminate/Support/helpers.php"</span>,</span><br><span class="line"> <span class="string">"vendor/laravel/framework/src/Illuminate/Foundation/helpers.php"</span></span><br><span class="line"> ],</span><br><span class="line"> <span class="string">"psr-4"</span>: {</span><br><span class="line"> <span class="string">"App\\"</span>: <span class="string">"app/"</span></span><br><span class="line"> }</span><br><span class="line"> }</span><br></pre></td></tr></table></figure><p>之后所有的文件载入不再做赘述,可自行参考以下资料:</p><blockquote><footer><strong>PHP中的PSR规范</strong><cite><a href="https://www.jianshu.com/p/b33155c15343" target="_blank" rel="noopener">www.jianshu.com/p/b33155c15343</a></cite></footer></blockquote><blockquote><footer><strong>composer文档</strong><cite><a href="https://docs.phpcomposer.com/01-basic-usage.html#Autoloading" target="_blank" rel="noopener">docs.phpcomposer.com/01-basic-usage.html#Autoloading</a></cite></footer></blockquote>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> composer自动引入 </tag>
<tag> autoload </tag>
</tags>
</entry>
<entry>
<title>框架目录结构</title>
<link href="/tree-directory.html"/>
<url>/tree-directory.html</url>
<content type="html"><![CDATA[<p>  laravel 框架按最简单的目录结构理解就是 <strong>核心文件目录</strong> 和 <strong>插件文件目录</strong>。假设这所有的目录结构，最开始我们是并不清楚的，然后随着index.php的运行,报错的出现与不断解决，整个目录结构及用途就会一点点慢慢清晰起来。<br>  当运行，第一个报错肯定是 bootstrap/autoload.php 文件不存在, 然后我们就按照另一份源码缺哈补哈。随着这个报错的解决，自然就会清楚，app\bootstrap文件夹，到目前为止有提供composer 自动载入类的作用。下面是整个框架的目录结构图<br><a id="more"></a></p><h4 id="核心文件目录"><a href="#核心文件目录" class="headerlink" title="核心文件目录"></a>核心文件目录</h4><figure class="highlight routeros"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br><span class="line">34</span><br><span class="line">35</span><br><span class="line">36</span><br><span class="line">37</span><br><span class="line">38</span><br><span class="line">39</span><br></pre></td><td class="code"><pre><span class="line">├── laravel 根目录</span><br><span class="line">├── app</span><br><span class="line">│ ├──<span class="built_in"> Console</span>artisan控制台</span><br><span class="line">│ ├── Events事件注册</span><br><span class="line">│ ├── Exceptions异常处理</span><br><span class="line">│ ├── Httphttp处理</span><br><span class="line">│ | ├── Controllers 控制器</span><br><span class="line">│ | ├── Middleware 中间件</span><br><span class="line">| | ├── Requests 表单请求类FormRequest,用于表单数据快捷验证</span><br><span class="line">│ | └── routes 路由文件</span><br><span class="line">│ ├── Jobs队列任务</span><br><span class="line">│ ├── Listeners事件监听</span><br><span class="line">│ ├── Policies用户操作授权控制</span><br><span class="line">│ └── Providers基本服务提供类</span><br><span class="line">│ └── User.php 默认用户认证模型</span><br><span class="line">|</span><br><span class="line">├── bootstrap 项目启动文件</span><br><span class="line">│ ├── cache 启动文件缓存，主要是services.php,记录服务提供类的即时、延迟、特定加载信息</span><br><span class="line">│ ├── app.php 创建整个项目Application类实例</span><br><span class="line">│ └── autoload 引入composer自动载入类</span><br><span class="line">|</span><br><span class="line">├──<span class="built_in"> config </span> 配置文件</span><br><span class="line">|</span><br><span class="line">├── database数据库迁移</span><br><span class="line">│ </span><br><span class="line">├── public公共资源目录，包含入口文件及资源文件，js、css、image等</span><br><span class="line">|</span><br><span class="line">├── resources 视图文件</span><br><span class="line">│ </span><br><span class="line">├── storage</span><br><span class="line">│ ├── app 其他文件存储目录</span><br><span class="line">│ ├── framework</span><br><span class="line">| | ├── cache 文件缓存目录</span><br><span class="line">| | ├── sessions 会话缓存目录</span><br><span class="line">| | └── views视图缓存目录</span><br><span class="line">│ └── logs 日志文件默认存储目录</span><br><span class="line">├── vendor 拓展文件目录</span><br><span class="line">└── .env 环境变量配置 </span><br><span class="line"></span><br></pre></td></tr></table></figure><h4 id="拓展文件目录"><a href="#拓展文件目录" class="headerlink" title="拓展文件目录"></a>拓展文件目录</h4><figure class="highlight crmsh"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br></pre></td><td class="code"><pre><span class="line">├── laravel/vendor</span><br><span class="line">├── bin 作为php-parse,phpunit,phpspec,psysh 指令执行目录</span><br><span class="line">├── classpreloader用于生成包含特定用例所需的所有类的单个PHP脚本,不依赖于自动加载</span><br><span class="line">├── composer<span class="string">"composer自动加载类"</span></span><br><span class="line">├── danielstjules 具有多字节支持的字符串操作库,如strtoupper('fòôbàř');</span><br><span class="line">├── dnoegel dnoegel/php-xdg-base-dir, XDG目录规范</span><br><span class="line">├── doctrinewww.doctrine-project.org 用于数据库迁移schema生成,数据字段修改</span><br><span class="line">├── fzaninottofzaninotto/faker 用于生成测试数据的PHP库</span><br><span class="line">├── hamcrest一个匹配Hamcrest的官方PHP端口的拓展，具体用途不详</span><br><span class="line">├── jakub-onderka控制台高亮PHP代码</span><br><span class="line">├── jeremeamia用于序列化闭包和匿名函数的PHP库。</span><br><span class="line">├── laravel <span class="string">"最核心拓展"</span></span><br><span class="line">├── league <span class="string">"league/flysystem 本地磁盘文件读写驱动"</span></span><br><span class="line">├── mockery PHP模拟对象框架,用于PHP单元测试</span><br><span class="line">├── monolog <span class="string">"php日志记录库,可以日志发送至files, sockets, inboxes, databases等"</span></span><br><span class="line">├── mtdowlingPHP cron表达式解析器</span><br><span class="line">├── nestbot nesbot/carbon 时间处理插件</span><br><span class="line">├── nikic 包名nikic/php-parser。 PHP词法分析、语法分析，生成一颗抽象语法树。</span><br><span class="line">| PHP内置函数token_get_all()可进行词法分析。在视图编译会用到</span><br><span class="line">├── paragonie</span><br><span class="line">├── phpdocumentor<span class="string">"paragonie/random_compat 安全码生成库,如默认session_id 生成"</span></span><br><span class="line">├── phpspec 可以按PSR标准创建文件夹结构(我目前所知)</span><br><span class="line">├── phpunit php单元测试 </span><br><span class="line">├── predis redis拓展</span><br><span class="line">├── psr <span class="string">"psr/log ,定制日志记录接口规范"</span></span><br><span class="line">├── psys psy/psysh php交互式控制台, 可以写php代码直接运行</span><br><span class="line">├── sebastian 不知道不明了 (°ー°〃)</span><br><span class="line">├── swiftmailer Mail 邮件发送插件</span><br><span class="line">├── symfony <span class="string">"symfony全家桶,在vender/laravel中require 。 重要插件库"</span></span><br><span class="line">├── vlucas <span class="string">"vlucas/phpdotenv 用于ENV环境变量的读取及设置"</span></span><br><span class="line">└── webmozart 通过Assert来测试方法的输入和输出,有点类似于<span class="keyword">Node</span>.<span class="title">js</span> 的Assert</span><br></pre></td></tr></table></figure><h5 id="framework目录"><a href="#framework目录" class="headerlink" title="framework目录"></a>framework目录</h5><p><font color="#f56954" size="3">/vendor/laravel/framework 可以说是整个laravel框架最最核心的目录,vendor目录下所有其他拓展基本都是为其服务<font><br><figure class="highlight sql"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br><span class="line">14</span><br><span class="line">15</span><br><span class="line">16</span><br><span class="line">17</span><br><span class="line">18</span><br><span class="line">19</span><br><span class="line">20</span><br><span class="line">21</span><br><span class="line">22</span><br><span class="line">23</span><br><span class="line">24</span><br><span class="line">25</span><br><span class="line">26</span><br><span class="line">27</span><br><span class="line">28</span><br><span class="line">29</span><br><span class="line">30</span><br><span class="line">31</span><br><span class="line">32</span><br><span class="line">33</span><br></pre></td><td class="code"><pre><span class="line">├── laravel/vendor/laravel/framework</span><br><span class="line">├── composer.json '记录了核心常用插件使用信息'</span><br><span class="line">└── src 遵循PSR-4目录规范</span><br><span class="line"> └── Illuminate </span><br><span class="line"> ├── Auth 用户认证，Access 、Password、AuthManager</span><br><span class="line"> ├── Broadcasting 广播(没使用过)</span><br><span class="line"> ├── Bus 任务分配(没使用过)</span><br><span class="line"> ├── <span class="keyword">Cache</span> 缓存操作类</span><br><span class="line"> ├── Config 配置操作类</span><br><span class="line"> ├── Console 控制台</span><br><span class="line"> ├── <span class="keyword">Container</span> <span class="string">'容器(实现Ioc),框架核心设计思想之一'</span></span><br><span class="line"> ├── Contracts <span class="string">'契约类(interface),定义app的几乎所有接口规范'</span></span><br><span class="line"> ├── Cookie 响应头Cookie</span><br><span class="line"> ├── <span class="keyword">Database</span> 数据库</span><br><span class="line"> ├── Enctyption 加密，解密类,如用于session_id加密和解密</span><br><span class="line"> ├── <span class="keyword">Events</span> 事件处理</span><br><span class="line"> ├── Filesystem 文件处理</span><br><span class="line"> ├── Foundation <span class="string">'基本文件类,如Application类'</span></span><br><span class="line"> ├── Hashing <span class="keyword">hash</span>加密类</span><br><span class="line"> ├── <span class="keyword">Http</span> request,response 处理 </span><br><span class="line"> ├── <span class="keyword">log</span> <span class="keyword">Log</span>\Write类</span><br><span class="line"> ├── Mail 邮件处理</span><br><span class="line"> ├── Pagination 分页</span><br><span class="line"> ├── Pipenation <span class="string">'管道类,核心设计思想之一，主要用于middleware处理'</span></span><br><span class="line"> ├── Queue 任务队列</span><br><span class="line"> ├── Redis <span class="string">'Redis操作，底层默认是必须安装 predis插件的'</span></span><br><span class="line"> ├── Routing 路由</span><br><span class="line"> ├── <span class="keyword">Session</span> 会话</span><br><span class="line"> ├── Support 其他帮助类,如帮助函数,视图错误信息处理</span><br><span class="line"> ├── <span class="keyword">Translation</span> 验证信息转换,需要resources/lang 语言包</span><br><span class="line"> ├── <span class="keyword">Validation</span> 数据验证类</span><br><span class="line"> └── <span class="keyword">View</span> 视图处理，模板编译</span><br><span class="line"></span><br></pre></td></tr></table></figure></font></font></p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> laravel目录结构 </tag>
</tags>
</entry>
<entry>
<title>laravel源码(开篇)</title>
<link href="/summary.html"/>
<url>/summary.html</url>
<content type="html"><![CDATA[<h4 id="学习心得"><a href="#学习心得" class="headerlink" title="学习心得"></a>学习心得</h4><p>  想要真正了解一套框架，是需要花很多心思和时间的，就像想要了解一个的人。<font color="#f56954">坚持源于喜欢，仅此而已！</font><br>  我个人的学习方法就是拿public\index.php，也就是项目的入口文件当做突破口，就当做没有任何手册。当然在此之前，个人觉得还是要有一定的框架使用经验。此学习分享纯属个人见解，不好之处欢迎批评指正!<br>  <em>版本说明: laravel5.1, php 5.6.4</em><br><a id="more"></a><br>   <em>index.php 从头到尾不会超过10行代码,总流程 <font color="#0099ff">创建App实例、接收request、获取route、返回response</font>，结束</em></p><figure class="highlight php"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br><span class="line">5</span><br><span class="line">6</span><br><span class="line">7</span><br><span class="line">8</span><br><span class="line">9</span><br><span class="line">10</span><br><span class="line">11</span><br><span class="line">12</span><br><span class="line">13</span><br></pre></td><td class="code"><pre><span class="line"><span class="keyword">require</span> <span class="keyword">__DIR__</span>.<span class="string">'/../bootstrap/autoload.php'</span>; </span><br><span class="line"></span><br><span class="line">$app = <span class="keyword">require_once</span> <span class="keyword">__DIR__</span>.<span class="string">'/../bootstrap/app.php'</span>;</span><br><span class="line"></span><br><span class="line">$kernel = $app->make(Illuminate\Contracts\Http\Kernel::class);</span><br><span class="line"></span><br><span class="line">$response = $kernel->handle(</span><br><span class="line"> $request = Illuminate\Http\Request::capture()</span><br><span class="line">);</span><br><span class="line"></span><br><span class="line">$response->send(); <span class="comment">// 发送响应</span></span><br><span class="line"></span><br><span class="line">$kernel->terminate($request, $response);</span><br></pre></td></tr></table></figure><h4 id="具体实现"><a href="#具体实现" class="headerlink" title="具体实现"></a>具体实现</h4><p>  准备一份laravel 源码，再准备一个自己的项目。最开始我们的项目是这样的<br><figure class="highlight stylus"><table><tr><td class="gutter"><pre><span class="line">1</span><br><span class="line">2</span><br><span class="line">3</span><br><span class="line">4</span><br></pre></td><td class="code"><pre><span class="line">├── app 根目录</span><br><span class="line"> └── public </span><br><span class="line"> ├── index<span class="selector-class">.php</span> 拷贝源码</span><br><span class="line"> └── <span class="selector-class">.htaccess</span> 拷贝源码</span><br></pre></td></tr></table></figure><br>将web服务器指定到该目录下,本地执行。<font color="LightCoral" size="4">随着系统报错，故事就开始了…</font> </p>]]></content>
<categories>
<category> laravel源码学习分享 </category>
</categories>
<tags>
<tag> laravel源码 </tag>
</tags>
</entry>
</search>