Create synapse associations with nifty-generators

Gemfile

@@ -37,6 +37,10 @@ group :production do
   gem 'rails_12factor'
 end
 
+group :development do
+  gem 'nifty-generators'
+end
+
 # Bootstrap
 gem 'bootstrap-sass', '2.3.2.0'
 
@@ -58,3 +62,5 @@ gem 'faker', '1.1.2'
 
 # Use debugger
 # gem 'debugger', group: [:development, :test]
+
+gem "mocha", group: :test

Gemfile.lock

@@ -56,9 +56,13 @@ GEM
     mail (2.5.4)
       mime-types (~> 1.16)
       treetop (~> 1.4.8)
+    metaclass (0.0.2)
     mime-types (1.25.1)
     minitest (4.7.5)
+    mocha (1.0.0)
+      metaclass (~> 0.0.1)
     multi_json (1.8.4)
+    nifty-generators (0.4.6)
     pg (0.17.1)
     polyglot (0.3.3)
     rack (1.5.2)
@@ -128,6 +132,8 @@ DEPENDENCIES
   faker (= 1.1.2)
   jbuilder (~> 1.2)
   jquery-rails
+  mocha
+  nifty-generators
   pg
   rails (= 4.0.2)
   rails_12factor

app/controllers/synapses_controller.rb

@@ -0,0 +1,17 @@
+class SynapsesController < ApplicationController
+  def create
+    @synapse = current_user.synapses.build(:other_user_id => params[:other_user_id])
+    if @synapse.save
+      redirect_to root_url, :notice => "Successfully added!"
+    else
+      flash[:error] = "Sorry, something went wrong. We're working on it."
+      redirect_to root_url
+    end
+  end
+
+  def destroy
+    @synapse = current_user.synapses.find(params[:id])
+    @synapse.destroy
+    redirect_to current_user, :notice => "Removed connection."
+  end
+end

app/helpers/synapses_helper.rb

@@ -0,0 +1,2 @@
+module SynapsesHelper
+end

app/models/synapse.rb

@@ -0,0 +1,4 @@
+class Synapse < ActiveRecord::Base
+  belongs_to :user
+  belongs_to :other_user, :class_name => "User"
+end

app/models/user.rb

@@ -1,6 +1,11 @@
 class User < ActiveRecord::Base
   has_many :posts, dependent: :destroy
 
+  has_many :synapses
+  has_many :other_users, :through => :synapses
+  has_many :inverse_synapses, :class_name  => "Synapse", :foreign_key => "other_user_id"
+  has_many :inverse_other_users, :through => :inverse_synapses, :source => :user
+
   before_save { self.email = email.downcase }
   before_create :create_remember_token
 

app/views/users/index.html.erb

@@ -2,5 +2,10 @@
 <h1>All users</h1>
 
 <ul class="users">
-    <%= render @users %>
+<% for user in User.all %>
+  <li>
+    <strong><%= user.name %></strong>
+    (<%= link_to "add", synapses_path(:other_user_id => user), :method => :post %>)
+  </li>
+<% end %>    
 </ul>

app/views/users/show.html.erb

@@ -4,6 +4,22 @@
     <section>
       <h1><%= @user.name %></h1>
     </section>
+    <section>
+      <h2>Connections</h2>
+      <ul>
+      <% for synapse in @user.synapses %>
+        <li>
+          <%= synapse.other_user.name %>
+          (<%= link_to "remove", synapse, method: :delete %>)
+        </li>
+      <% end %>
+      <% for user in @user.inverse_other_users %>
+        <li>
+          <%= user.name %>
+        </li>
+      <% end %>
+      </ul>
+    </section>
   </aside>
   <div class="span8">
     <% if @user.posts.any? %>

config/routes.rb

@@ -12,6 +12,8 @@
 
   resources :posts, only: [:create, :destroy]
 
+  resources :synapses
+
   # The priority is based upon order of creation: first created -> highest priority.
   # See how all your routes lay out with "rake routes".
 

db/migrate/20140127184714_create_synapses.rb

@@ -0,0 +1,13 @@
+class CreateSynapses < ActiveRecord::Migration
+  def self.up
+    create_table :synapses do |t|
+      t.integer :user_id
+      t.integer :other_user_id
+      t.timestamps
+    end
+  end
+
+  def self.down
+    drop_table :synapses
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 20140122232133) do
+ActiveRecord::Schema.define(version: 20140127184714) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -27,6 +27,24 @@
 
   add_index "posts", ["user_id", "created_at"], name: "index_posts_on_user_id_and_created_at", using: :btree
 
+  create_table "relationships", force: true do |t|
+    t.integer  "follower_id"
+    t.integer  "followed_id"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
+  add_index "relationships", ["followed_id"], name: "index_relationships_on_followed_id", using: :btree
+  add_index "relationships", ["follower_id", "followed_id"], name: "index_relationships_on_follower_id_and_followed_id", unique: true, using: :btree
+  add_index "relationships", ["follower_id"], name: "index_relationships_on_follower_id", using: :btree
+
+  create_table "synapses", force: true do |t|
+    t.integer  "user_id"
+    t.integer  "other_user_id"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+  end
+
   create_table "users", force: true do |t|
     t.string   "email"
     t.string   "name"

test/fixtures/synapses.yml

@@ -0,0 +1,7 @@
+one:
+  user_id: 
+  other_user_id: 
+
+two:
+  user_id: 
+  other_user_id: 

test/functional/synapses_controller_test.rb

@@ -0,0 +1,22 @@
+require 'test_helper'
+
+class SynapsesControllerTest < ActionController::TestCase
+  def test_create_invalid
+    Synapse.any_instance.stubs(:valid?).returns(false)
+    post :create
+    assert_template 'new'
+  end
+
+  def test_create_valid
+    Synapse.any_instance.stubs(:valid?).returns(true)
+    post :create
+    assert_redirected_to root_url
+  end
+
+  def test_destroy
+    synapse = Synapse.first
+    delete :destroy, :id => synapse
+    assert_redirected_to root_url
+    assert !Synapse.exists?(synapse.id)
+  end
+end

test/unit/synapse_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class SynapseTest < ActiveSupport::TestCase
+  def test_should_be_valid
+    assert Synapse.new.valid?
+  end
+end