Merge pull request #38 from ans-group/not-like

Add nlk filter and update filter documentation in README

README.md

@@ -63,6 +63,13 @@ Filters are done in the query parameters with the format `property:operator=term
 
 By default, if no operator is specified, it will default to `eq` so `name=Bob` will expand to `name:eq=Bob`
 
+### Like & Not Like
+
+The string filter also supports like and not like operators. To use these you should use `*` as the wildcard
+rather than `%` as you would in a typical database query.
+
+For instance `first_name:lk=Sam*` would match `Sam`, `Samuel` and `Samantha`.
+
 ## Sorting
 
 You can set the fields that can be sortable when setting up your model.  
@@ -114,7 +121,7 @@ $sieve->setDefaultSort('name', 'asc')
 
 ### String
 
-The basic filter. Ideal for textual data, implements `eq`, `neq`, `in`, and `nin`
+The basic filter. Ideal for textual data, implements `eq`, `neq`, `in`, `nin`, `lk` and `nlk`
 
 ```php
 <?php
@@ -147,6 +154,7 @@ Only provides `eq` and `neq`. Also takes two arguments to specify what your true
 ```php
 <?php
 $filter->boolean() // defaults to 1 and 0
+$filter->boolean('Yes', 'No') // search for Yes and No in the database
 ```
 
 ### Date

src/Filters/StringFilter.php

@@ -24,6 +24,9 @@ public function modifyQuery($query, SearchTerm $search)
         if ($search->operator() == 'lk') {
             $query->where($search->column(), 'LIKE', $this->prepareLike($search->term()));
         }
+        if ($search->operator() == 'nlk') {
+            $query->where($search->column(), 'NOT LIKE', $this->prepareLike($search->term()));
+        }
     }
 
     protected function prepareLike($term)
@@ -67,6 +70,6 @@ private function shouldEscape($string, $pos)
 
     public function operators()
     {
-        return ['eq', 'neq', 'in', 'nin', 'lk'];
+        return ['eq', 'neq', 'in', 'nin', 'lk', 'nlk'];
     }
 }

tests/Filters/StringFilterTest.php

@@ -85,4 +85,17 @@ public function correctly_applies_lk_operator()
         $this->assertEquals('select * where "name" LIKE ?', $builder->toSql());
         $this->assertEquals(['%t\est*'], $builder->getBindings());
     }
+
+    /**
+     * @test
+     */
+    public function correctly_applies_nlk_operator()
+    {
+        $search = new SearchTerm('name', 'nlk', 'name', '*t\\\\est\\*');
+        $builder = app(Builder::class);
+
+        (new StringFilter)->modifyQuery($builder, $search);
+        $this->assertEquals('select * where "name" NOT LIKE ?', $builder->toSql());
+        $this->assertEquals(['%t\est*'], $builder->getBindings());
+    }
 }