Feature: New post model with association to group model

.gitignore

@@ -14,3 +14,6 @@
 # Ignore all logfiles and tempfiles.
 /log/*.log
 /tmp
+
+# Ignore coverage directory
+coverage

app/controllers/posts_controller.rb

@@ -0,0 +1,7 @@
+class PostsController < ApplicationController
+
+  def show
+    render json: Post.find(params[:ids])
+  end
+
+end

app/models/group.rb

@@ -1,3 +1,4 @@
 class Group < ActiveRecord::Base
   has_many :tweets
+  has_many :posts
 end

app/models/post.rb

@@ -0,0 +1,3 @@
+class Post < ActiveRecord::Base
+  belongs_to :group
+end

app/serializers/group_serializer.rb

@@ -1,4 +1,5 @@
 class GroupSerializer < ActiveModel::Serializer
   attributes :id, :name, :website, :twitter_handle, :google_group, :facebook
   has_many :tweets, embed: :ids, key: :tweets
+  has_many :posts, embed: :ids, key: :posts
 end

app/serializers/post_serializer.rb

@@ -0,0 +1,3 @@
+class PostSerializer < ActiveModel::Serializer
+  attributes :id, :title
+end

config/routes.rb

@@ -1,5 +1,5 @@
 DsmcodeApi::Application.routes.draw do
   resources :groups
   resource :tweets
-
+  resource :posts
 end

db/migrate/20131013172125_create_posts.rb

@@ -0,0 +1,9 @@
+class CreatePosts < ActiveRecord::Migration
+  def change
+    create_table :posts do |t|
+      t.string :title
+
+      t.timestamps
+    end
+  end
+end

db/migrate/20131013174840_add_group_id_to_posts.rb

@@ -0,0 +1,5 @@
+class AddGroupIdToPosts < ActiveRecord::Migration
+  def change
+    add_column :posts, :group_id, :integer
+  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: 20131009012902) do
+ActiveRecord::Schema.define(version: 20131013174840) do
 
   create_table "groups", force: true do |t|
     t.string   "name"
@@ -23,6 +23,13 @@
     t.datetime "updated_at"
   end
 
+  create_table "posts", force: true do |t|
+    t.string   "title"
+    t.datetime "created_at"
+    t.datetime "updated_at"
+    t.integer  "group_id"
+  end
+
   create_table "tweets", force: true do |t|
     t.string   "content"
     t.datetime "created_at"

test/controllers/groups_controller_test.rb

@@ -14,7 +14,8 @@ class GroupsControllerTest < ActionController::TestCase
         'twitter_handle' => 'two_twit',
         'google_group' => 'two_grp',
         'facebook' => 'two_fb',
-        'tweets' => [tweets(:three).id, tweets(:four).id]
+        'tweets' => [tweets(:three).id, tweets(:four).id],
+        'posts' => [posts(:three).id, posts(:four).id]
       },
       {
         'id' => groups(:one).id,
@@ -23,7 +24,8 @@ class GroupsControllerTest < ActionController::TestCase
         'twitter_handle' => 'one_twit',
         'google_group' => 'one_grp',
         'facebook' => 'one_fb',
-        'tweets' => [tweets(:two).id, tweets(:one).id]
+        'tweets' => [tweets(:two).id, tweets(:one).id],
+        'posts' => [posts(:two).id, posts(:one).id]
       },
     ], json_groups
   end
@@ -39,7 +41,8 @@ class GroupsControllerTest < ActionController::TestCase
       'twitter_handle' => 'one_twit',
       'google_group' => 'one_grp',
       'facebook' => 'one_fb',
-      'tweets' => [tweets(:two).id, tweets(:one).id]
+      'tweets' => [tweets(:two).id, tweets(:one).id],
+      'posts' => [posts(:two).id, posts(:one).id]
     }
   end
 

test/controllers/posts_controller_test.rb

@@ -0,0 +1,20 @@
+require 'test_helper'
+
+class PostsControllerTest < ActionController::TestCase
+
+  test "should show all posts for given ids" do
+    get :show, :ids => [posts(:one).id, posts(:two).id]
+    assert_response :success
+    assert_equal JSON.parse(@response.body), [
+      {
+        'id' => posts(:two).id,
+        'title' =>  'Title Two',
+      },
+      {
+        'id' => posts(:one).id,
+        'title' =>  'Title One',
+      },
+    ]
+  end
+
+end

test/controllers/tweets_controller_test.rb

@@ -7,11 +7,11 @@ class TweetsControllerTest < ActionController::TestCase
     assert_response :success
     assert_equal JSON.parse(@response.body), [
       {
-        'id' => groups(:two).id,
+        'id' => tweets(:two).id,
         'content' =>  'Two',
       },
       {
-        'id' => groups(:one).id,
+        'id' => tweets(:one).id,
         'content' =>  'One',
       },
     ]

test/fixtures/posts.yml

@@ -0,0 +1,17 @@
+# Read about fixtures at http://api.rubyonrails.org/classes/ActiveRecord/Fixtures.html
+
+one:
+  title: 'Title One'
+  group: one
+
+two:
+  title: 'Title Two'
+  group: one
+
+three:
+  title: 'Title Three'
+  group: two
+
+four:
+  title: 'Title Four'
+  group: two

test/models/post_test.rb

@@ -0,0 +1,4 @@
+require 'test_helper'
+
+class PostTest < ActiveSupport::TestCase
+end