receber ID do usuário e responder com um JSON dos seus builds

app/controllers/builds_controller.rb

@@ -6,4 +6,13 @@ def new
 
     render json: {build: @build, build_type_components: build_type.components}
   end
+
+  private
+    def collection
+      @builds ||= params[:user_id] ? get_user(params[:user_id]).builds : Build.all
+    end
+
+    def get_user(id)
+      User.find(id)
+    end
 end

app/models/build.rb

@@ -1,7 +1,8 @@
 class Build < ActiveRecord::Base
 
   # Relations
-  belongs_to :type, class_name: 'BuildType', foreign_key: 'build_type_id'
+  belongs_to :user
+  belongs_to :build_type
   has_and_belongs_to_many :components
 
 end

app/models/component.rb

@@ -2,7 +2,7 @@ class Component < ActiveRecord::Base
 
   # Relations
   belongs_to :manufacturer
-  belongs_to :type, class_name: 'ComponentType', foreign_key: 'component_type_id'
+  belongs_to :component_type
   has_and_belongs_to_many :builds
 
 end

app/models/user.rb

@@ -1,5 +1,8 @@
 class User < ActiveRecord::Base
 
+  # Relationships
+  has_many :builds, class_name: 'Build'
+
   def self.from_omniauth(auth)
     where(auth.slice(:provider, :uid)).first_or_initialize.tap do |user|
       user.provider         = auth.provider

app/views/builds/index.json.jbuilder

@@ -2,7 +2,7 @@ json.array! collection do |build|
   json.name build.name
   json.image_url "http://placehold.it/250x200"
   json.type do
-    json.name build.type.name
+    json.name build.build_type.name
   end
   json.comments build.components, partial: 'components/components', as: :component
 end

db/migrate/20131220172932_add_user_references_to_builds.rb

@@ -0,0 +1,5 @@
+class AddUserReferencesToBuilds < ActiveRecord::Migration
+  def change
+    add_reference :builds, :user, index: true
+  end
+end

db/migrate/20131220173814_create_users.rb

@@ -0,0 +1,8 @@
+class CreateUsers < ActiveRecord::Migration
+  def change
+    create_table :users do |t|
+      t.string :name
+      t.string :email
+    end
+  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: 20131219172529) do
+ActiveRecord::Schema.define(version: 20131220173814) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "plpgsql"
@@ -34,9 +34,11 @@
     t.datetime "created_at"
     t.datetime "updated_at"
     t.integer  "build_type_id"
+    t.integer  "user_id"
   end
 
   add_index "builds", ["build_type_id"], name: "index_builds_on_build_type_id", using: :btree
+  add_index "builds", ["user_id"], name: "index_builds_on_user_id", using: :btree
 
   create_table "builds_components", id: false, force: true do |t|
     t.integer "build_id",     null: false
@@ -71,4 +73,9 @@
     t.datetime "updated_at"
   end
 
+  create_table "users", force: true do |t|
+    t.string "name"
+    t.string "email"
+  end
+
 end

spec/controllers/builds_controller_spec.rb

@@ -27,9 +27,39 @@
   end
 
 
-  describe '#index' do
+  describe 'GET index' do
 
-    it 'assigns existing builds' do
+    context "requests all builds" do
+      let!(:build) { FactoryGirl.build(:build) }
+
+      before do
+        Build.stub(:all) { [build] }
+        build.stub(:build_type) { FactoryGirl.build(:build_type) }
+        get :index, format: :json
+        @body = response.body
+      end
+
+      it 'assigns existing builds' do
+        expect(assigns[:builds].first).to be_a Build
+      end
+
+      it { expect(@body).to include "\"name\":\"MyString\"" }
+      it { expect(@body).to include "\"image_url\":\"http://placehold.it/250x200\"" }
+      it { expect(@body).to include "\"type\":{\"name\":\"road\"" }
+      it { expect(@body).to include "\"comments\":[]" }
+    end
+
+    context "requests builds of user" do
+      let!(:build) { FactoryGirl.build(:build, :with_user) }
+      let!(:user) { build.user }
+
+      it 'assigns existing builds' do
+        controller.stub(:get_user).with(build.user_id).and_return(user)
+        user.should_receive(:builds) { [build] }
+
+        get :index, user_id: build.user_id, format: :json
+        expect(assigns[:builds].first).to be_a(Build)
+      end
     end
 
   end

spec/factories/build_types.rb

@@ -0,0 +1,5 @@
+FactoryGirl.define do
+  factory :build_type do
+    name "road"
+  end
+end

spec/factories/builds.rb

@@ -2,5 +2,12 @@
 
 FactoryGirl.define do
   factory :build do
+    name "MyString"
+
+    build_type
+
+    trait :with_user do
+      user
+    end
   end
 end

spec/factories/users.rb

@@ -2,10 +2,15 @@
 
 FactoryGirl.define do
   factory :user do
-    provider "MyString"
-    uid "MyString"
+
     name "MyString"
-    oauth_token "MyString"
-    oauth_expires_at "2013-10-07 20:40:28"
+    email "mystring@example.com"
+
+    trait :provider do
+      provider "MyString"
+      uid "MyString"
+      oauth_token "MyString"
+      oauth_expires_at "2013-10-07 20:40:28"
+    end
   end
 end

spec/models/build_spec.rb

@@ -2,5 +2,6 @@
 
 describe Build do
   it { should respond_to :name }
-  it { should belong_to(:type).class_name('BuildType').with_foreign_key('build_type_id') }
+  it { should belong_to(:user) }
+  it { should belong_to(:build_type).class_name('BuildType') }
 end

spec/models/component_spec.rb

@@ -6,6 +6,6 @@
   it { should have_db_column(:weight).of_type(:integer) }
 
   it { should belong_to(:manufacturer).class_name('Manufacturer') }
-  it { should belong_to(:type).class_name('ComponentType').with_foreign_key('component_type_id') }
+  it { should belong_to(:component_type).class_name('ComponentType') }
   it { should have_and_belong_to_many(:builds).class_name('Build') }
 end

spec/models/user_spec.rb

@@ -1,5 +1,6 @@
 require 'spec_helper'
 
 describe User do
-  pending "add some examples to (or delete) #{__FILE__}"
+  it { have_db_column :name }
+  it { should have_many(:builds).class_name('Build') }
 end