Add comment resource

app/controllers/application_controller.rb

@@ -4,6 +4,8 @@ class ApplicationController < ActionController::Base
   protect_from_forgery
   rescue_from(ActiveRecord::RecordNotFound) { render 'exceptions/not_found' }
 
+  class Unauthorized < Exception; end
+
   helper_method :current_user
 
   def current_user
@@ -20,4 +22,10 @@ class ApplicationController < ActionController::Base
     end
   end
 
+  private
+
+  def ensure_authenticated!
+    raise Unauthorized unless current_user
+  end
+
 end

app/controllers/comments_controller.rb

@@ -0,0 +1,34 @@
+class CommentsController < ApplicationController
+  respond_to :json
+
+  before_filter :ensure_authenticated!, :only => [:create, :update, :destroy]
+  before_filter :load_asciicast, :only => [:index, :create]
+
+  def index
+    respond_with @asciicast.comments
+  end
+
+  def create
+    @comment = Comment.new(params[:comment])
+    @comment.asciicast = @asciicast
+    @comment.user = current_user
+
+    @comment.save
+
+    respond_with @comment
+  end
+
+  def update
+    respond_with Comment.update(params[:id], params[:comment])
+  end
+
+  def destroy
+    respond_with Comment.destroy(params[:id])
+  end
+
+  private
+
+  def load_asciicast
+    @asciicast = Asciicast.find(params[:asciicast_id])
+  end
+end

app/models/comment.rb

@@ -0,0 +1,10 @@
+class Comment < ActiveRecord::Base
+
+  validates :body, :presence => true
+  validates :asciicast_id, :presence => true
+  validates :user_id, :presence => true
+
+  belongs_to :user
+  belongs_to :asciicast
+
+end

config/routes.rb

@@ -1,9 +1,15 @@
 AsciiIo::Application.routes.draw do
+  resources :comments
+
   resources :asciicasts
   match ':id' => 'asciicasts#show', :constraints => { :id => /\d+/ }
 
   namespace :api do
-    resources :asciicasts
+    resources :asciicasts do
+
+      resources :comments
+
+    end
   end
 
   match "/auth/:provider/callback" => "sessions#create"

db/migrate/20120227230718_create_comments.rb

@@ -0,0 +1,14 @@
+class CreateComments < ActiveRecord::Migration
+  def change
+    create_table :comments do |t|
+      t.text :body
+      t.integer :user_id
+      t.integer :asciicast_id
+
+      t.timestamps
+    end
+
+    add_index(:comments, :asciicast_id)
+    add_index(:comments, :user_id)
+  end
+end

db/schema.rb

@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20120226184448) do
+ActiveRecord::Schema.define(:version => 20120227230718) do
 
   create_table "asciicasts", :force => true do |t|
     t.integer  "user_id"
@@ -36,6 +36,17 @@ ActiveRecord::Schema.define(:version => 20120226184448) do
   add_index "asciicasts", ["recorded_at"], :name => "index_asciicasts_on_recorded_at"
   add_index "asciicasts", ["user_id"], :name => "index_asciicasts_on_user_id"
 
+  create_table "comments", :force => true do |t|
+    t.text     "body"
+    t.integer  "user_id"
+    t.integer  "asciicast_id"
+    t.datetime "created_at",   :null => false
+    t.datetime "updated_at",   :null => false
+  end
+
+  add_index "comments", ["asciicast_id"], :name => "index_comments_on_asciicast_id"
+  add_index "comments", ["user_id"], :name => "index_comments_on_user_id"
+
   create_table "users", :force => true do |t|
     t.string   "provider",   :null => false
     t.string   "uid",        :null => false

spec/controllers/comments_controller_spec.rb

@@ -0,0 +1,71 @@
+require 'spec_helper'
+
+describe CommentsController do
+
+  let(:user)      { mock_model(User) }
+  let(:asciicast) { mock_model(Asciicast) }
+
+  it "should ensure user is authenticated" do
+
+  end
+
+  before do
+    Asciicast.stub(:find).and_return(asciicast)
+    login_as(user)
+  end
+
+  describe "#create" do
+
+    context "given valid data" do
+      def dispatch
+        post :create,
+          :asciicast_id => asciicast.id,
+          :comment => {"body" => "Foo"},
+          :format => :json
+      end
+
+      before do
+        Comment.any_instance.should_receive(:save).and_return(true)
+      end
+
+      it "assigns current_user" do
+        dispatch
+        assigns(:comment).user.should_not be_blank
+      end
+
+      it "assigns asciicast" do
+        dispatch
+        assigns(:comment).asciicast.should_not be_blank
+      end
+
+      it "assigns asciicast" do
+        dispatch
+        response.status.should == 201
+      end
+    end
+
+    context "given not valid data" do
+      def dispatch
+        post :create,
+          :asciicast_id => asciicast.id,
+          :comment => {},
+          :format => :json
+      end
+
+      it "response should be 422" do
+        dispatch
+        response.status.should == 422
+      end
+    end
+  end
+
+  describe "#index" do
+
+    it "return comments" do
+      asciicast.should_receive(:comments).and_return([])
+      get :index, :asciicast_id => asciicast.id
+    end
+
+  end
+
+end

spec/factories/asciicasts.rb

@@ -3,6 +3,8 @@
 FactoryGirl.define do
   factory :asciicast do
     user_id 1
+    stdout "MyString"
+    stdout_timing "MyString"
     title "MyString"
     duration 1
     recorded_at "2011-11-23 22:06:07"

spec/factories/comments.rb

@@ -0,0 +1,7 @@
+FactoryGirl.define do
+  factory :comment do
+    body "My fancy comment"
+    association :user
+    association :asciicast
+  end
+end

spec/models/comment_spec.rb

@@ -0,0 +1,8 @@
+require 'spec_helper'
+
+describe Comment do
+
+  it "factory should be valid" do
+    Factory.build(:comment).should be_valid
+  end
+end

spec/spec_helper.rb

@@ -11,6 +11,7 @@ RSpec.configure do |config|
   config.mock_with :rspec
 
   config.use_transactional_fixtures = true
+  config.include(ControllerMacros, :type => :controller)
 
   config.infer_base_class_for_anonymous_controllers = false
 end

spec/support/controller_macros.rb

@@ -0,0 +1,7 @@
+module ControllerMacros
+
+  def login_as(user)
+    controller.stub(:current_user => user)
+  end
+
+end