Add Facebook login with Sorcery

The facebook key and secret defined in the sorcery config file are for
testing only and need to be changed and not committed to source when
app is ready to go live

app/assets/javascripts/oauths.js.coffee

@@ -0,0 +1,3 @@
+# Place all the behaviors and hooks related to the matching controller here.
+# All this logic will automatically be available in application.js.
+# You can use CoffeeScript in this file: http://coffeescript.org/

app/assets/stylesheets/oauths.css.scss

@@ -0,0 +1,3 @@
+// Place all the styles related to the Oauths controller here.
+// They will automatically be included in application.css.
+// You can use Sass (SCSS) here: http://sass-lang.com/

app/controllers/oauths_controller.rb

@@ -0,0 +1,32 @@
+class OauthsController < ApplicationController
+  skip_before_filter :require_login
+
+  # sends the user on a trip to the provider,
+  # and after authorizing there back to the callback url.
+  def oauth
+    login_at(auth_params[:provider])
+  end
+
+  def callback
+    provider = auth_params[:provider]
+    if @user = login_from(provider)
+      redirect_to root_path, :notice => "Logged in with #{provider.titleize}!"
+    else
+      begin
+        @user = create_from(auth_params[:provider])
+
+        reset_session
+        auto_login(@user)
+        redirect_to root_path, :notice => "Signed up with #{provider.titleize}!"
+      rescue
+        redirect_to root_path, :alert => "Failed to login with #{provider.titleize}!"
+      end
+    end
+  end
+
+  private
+  def auth_params
+    params.permit(:code, :provider)
+  end
+
+end

app/helpers/oauths_helper.rb

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

app/models/authentication.rb

@@ -0,0 +1,3 @@
+class Authentication < ActiveRecord::Base
+  belongs_to :user
+end

app/models/user.rb

@@ -1,5 +1,7 @@
 class User < ActiveRecord::Base
-	authenticates_with_sorcery!
+	authenticates_with_sorcery! do |config|
+    config.authentications_class = Authentication
+  end
 
 	validates :password, presence: true, confirmation: true, length: { minimum: 3 }, unless: ("id?" || "password_confirmation?")
 	validates :password_confirmation, presence: true, unless: ("id?" || "password?")
@@ -16,5 +18,7 @@ class User < ActiveRecord::Base
 
 	has_many :user_organization_relationships
 	has_many :organizations, through: :user_organization_relationships
+  has_many :authentications, :dependent => :destroy
+  accepts_nested_attributes_for :authentications
 
 end

app/views/oauths/callback.html.haml

@@ -0,0 +1,2 @@
+%h1 Oauths#callback
+%p Find me in app/views/oauths/callback.html.haml

app/views/oauths/oauth.html.haml

@@ -0,0 +1,2 @@
+%h1 Oauths#oauth
+%p Find me in app/views/oauths/oauth.html.haml

app/views/user_sessions/new.html.haml

@@ -8,4 +8,6 @@
 			Create an Account
 		%p
 			#{_ 'user.why_register', 'paragraph'}
+			= link_to 'Login with Facebook', auth_at_provider_path(:provider => :facebook)
 			= render '/users/form'
+			

config/initializers/sorcery.rb

@@ -71,7 +71,7 @@ Rails.application.config.sorcery.configure do |config|
   # What providers are supported by this app, i.e. [:twitter, :facebook, :github, :linkedin, :xing, :google, :liveid] .
   # Default: `[]`
   #
-  # config.external_providers =
+  config.external_providers = [:facebook]
 
 
   # You can change it by your local ca_file. i.e. '/etc/pki/tls/certs/ca-bundle.crt'
@@ -109,13 +109,14 @@ Rails.application.config.sorcery.configure do |config|
   # config.twitter.secret = ""
   # config.twitter.callback_url = "http://0.0.0.0:3000/oauth/callback?provider=twitter"
   # config.twitter.user_info_mapping = {:email => "screen_name"}
-  #
+  
-  # config.facebook.key = ""
+  config.facebook.key = "726202304080642"
-  # config.facebook.secret = ""
+  config.facebook.secret = "386a7b717d348af4120aeb1bb0ca3516"
-  # config.facebook.callback_url = "http://0.0.0.0:3000/oauth/callback?provider=facebook"
+  config.facebook.callback_url = "http://0.0.0.0:3000/oauth/callback?provider=facebook"
-  # config.facebook.user_info_mapping = {:email => "name"}
+  config.facebook.user_info_mapping = {:email => "email", :username => "username", :avatar => "picture/data/url"}
-  # config.facebook.access_permissions = ["email", "publish_stream"]
+  config.facebook.scope = "email"
-  #
+  config.facebook.display = "popup"
+  
   # config.github.key = ""
   # config.github.secret = ""
   # config.github.callback_url = "http://0.0.0.0:3000/oauth/callback?provider=github"
@@ -147,7 +148,7 @@ Rails.application.config.sorcery.configure do |config|
     # specify username attributes, for example: [:username, :email].
     # Default: `[:username]`
     #
-    # user.username_attribute_names =
+    user.username_attribute_names = [:username, :email]
 
 
     # change *virtual* password attribute, the one which is used until an encrypted one is generated.
@@ -214,7 +215,7 @@ Rails.application.config.sorcery.configure do |config|
     # make this configuration inheritable for subclasses. Useful for ActiveRecord's STI.
     # Default: `false`
     #
-    # user.subclasses_inherit_config =
+    user.subclasses_inherit_config = true
 
 
     # -- remember_me --
@@ -411,7 +412,7 @@ Rails.application.config.sorcery.configure do |config|
     # Class which holds the various external provider data for this user.
     # Default: `nil`
     #
-    # user.authentications_class =
+    user.authentications_class = Authentication
 
 
     # User's identifier in authentications class.

config/routes.rb

@@ -57,6 +57,10 @@ BikeBike::Application.routes.draw do
 	post	'logout' => 'user_sessions#destroy', :as => :logout
 	get		'register'  => 'users#new', :as => 'register'
   
+  post "oauth/callback" => "oauths#callback"
+  get "oauth/callback" => "oauths#callback"
+  get "oauth/:provider" => "oauths#oauth", :as => :auth_at_provider
+
 	root 'pages#home'
 
 end

spec/spec_helper.rb

@@ -23,6 +23,8 @@ require 'capybara/rspec'
 
 #Capybara.ignore_hidden_elements = false # testing hidden fields
 
+include Sorcery::TestHelpers::Rails
+
 RSpec.configure do |config|
   # == Mock Framework
   #
@@ -33,6 +35,7 @@ RSpec.configure do |config|
   # config.mock_with :rr
   # config.mock_with :rspec
 
+  config.include AuthenticationForFeatureRequest, type: :feature
 
   # Run specs in random order to surface order dependencies. If you find an
   # order dependency and want to debug it, you can fix the order by providing

spec/support/authentication.rb

@@ -0,0 +1,8 @@
+module AuthenticationForFeatureRequest
+  def login user, password = 'login'
+    user.update_attribute :password, password
+
+    page.driver.post sessions_url, {email: user.email, password: password}
+    visit root_url
+  end
+end

test/controllers/oauths_controller_test.rb

@@ -0,0 +1,14 @@
+require 'test_helper'
+
+class OauthsControllerTest < ActionController::TestCase
+  test "should get oauth" do
+    get :oauth
+    assert_response :success
+  end
+
+  test "should get callback" do
+    get :callback
+    assert_response :success
+  end
+
+end

test/factories/authentications.rb

@@ -0,0 +1,6 @@
+# Read about factories at https://github.com/thoughtbot/factory_girl
+
+FactoryGirl.define do
+  factory :authentication do
+  end
+end

test/helpers/oauths_helper_test.rb

@@ -0,0 +1,4 @@
+require 'test_helper'
+
+class OauthsHelperTest < ActionView::TestCase
+end

test/models/authentication_test.rb

@@ -0,0 +1,7 @@
+require 'test_helper'
+
+class AuthenticationTest < ActiveSupport::TestCase
+  # test "the truth" do
+  #   assert true
+  # end
+end