Implement playlists/create action for API

app/controllers/api/playlists_controller.rb

@@ -4,4 +4,9 @@ class Api::PlaylistsController < Api::ApplicationController
   def index
     @playlists = Playlist.all
   end
+
+  def create
+    @playlist = current_user.playlists.build(params[:playlist].slice(:name))
+    @playlist.save
+  end
 end

app/views/api/playlists/create.rabl

@@ -0,0 +1,4 @@
+object @playlist
+
+attribute :id
+attribute :name

config/routes.rb

@@ -1,6 +1,6 @@
 Scube::Application.routes.draw do
   namespace :api do
-    resources :playlists, :only => [:index]
+    resources :playlists, :only => [:index, :create]
     resources :sessions, :only => [:create]
 
     match '*all' => 'application#cor_preflight', :via => :options

spec/controllers/api/playlists_controller_spec.rb

@@ -30,4 +30,23 @@ describe Api::PlaylistsController do
       do_get.each { |t| t.keys.should include 'name' }
     end
   end
+
+  describe 'POST create' do
+    def do_create
+      post :create,
+        :format => :json,
+        :playlist => Factory.attributes_for(:playlist)
+    end
+
+    it 'creates a new playlist for the current user' do
+      expect {
+        do_create
+      }.to change(controller.current_user.playlists, :count).by(1)
+    end
+
+    it 'assigns the playlist' do
+      do_create
+      assigns[:playlist].should be_a Playlist
+    end
+  end
 end

spec/integration/api/playlists_spec.rb

@@ -0,0 +1,22 @@
+require 'spec_helper'
+
+feature 'API playlists' do
+  include UserIntegrationHelpers
+
+  background do
+    api_sign_in
+  end
+
+  scenario 'creates playlist' do
+    playlist = Factory.attributes_for :playlist
+
+    post api_playlists_path,
+      :format => :json,
+      :playlist => playlist
+
+    json = JSON response.body
+
+    json['id'].should be_a Fixnum
+    json['name'].should == playlist[:name]
+  end
+end