add facebook oauth

Gemfile

@@ -26,6 +26,8 @@ gem 'thin'
 gem 'heroku'
 gem 'icalendar'
 
+gem "omniauth-facebook"
+
 # To use ActiveModel has_secure_password
 # gem 'bcrypt-ruby', '~> 3.0.0'
 

Gemfile.lock

@@ -56,7 +56,12 @@ GEM
     eventmachine (0.12.10)
     execjs (1.2.9)
       multi_json (~> 1.0)
+    faraday (0.7.5)
+      addressable (~> 2.2.6)
+      multipart-post (~> 1.1.3)
+      rack (>= 1.1.0, < 2)
     haml (3.1.3)
+    hashie (1.2.0)
     heroku (2.14.0)
       launchy (>= 0.3.2)
       rest-client (~> 1.6.1)
@@ -87,7 +92,19 @@ GEM
       treetop (~> 1.4.8)
     mime-types (1.17.2)
     multi_json (1.0.3)
+    multipart-post (1.1.3)
     oauth (0.4.5)
+    oauth2 (0.5.1)
+      faraday (~> 0.7.4)
+      multi_json (~> 1.0.3)
+    omniauth (1.0.0)
+      hashie (~> 1.2)
+      rack
+    omniauth-facebook (1.0.0.rc2)
+      omniauth-oauth2 (~> 1.0.0)
+    omniauth-oauth2 (1.0.0)
+      oauth2 (~> 0.5.0)
+      omniauth (~> 1.0)
     orm_adapter (0.0.5)
     pg (0.11.0)
     polyglot (0.3.3)
@@ -185,6 +202,7 @@ DEPENDENCIES
   icalendar
   jquery-rails
   letter_opener
+  omniauth-facebook
   pg
   rails (= 3.1.1)
   ruby-debug19

app/assets/stylesheets/dashboard.css.scss

@@ -1,3 +1,7 @@
 // Place all the styles related to the dashboard controller here.
 // They will automatically be included in application.css.
 // You can use Sass (SCSS) here: http://sass-lang.com/
+
+p.pull-right{
+  color: #E6E6E6 !important;
+}

app/controllers/omniauth_callbacks_controller.rb

@@ -0,0 +1,14 @@
+class OmniauthCallbacksController < Devise::OmniauthCallbacksController
+  def facebook
+    @user = User.find_for_facebook_oauth(request.env["omniauth.auth"], current_user)
+
+    if @user.persisted?
+      flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => "Facebook"
+      sign_in_and_redirect @user, :event => :authentication
+    else
+      session["devise.facebook_data"] = request.env["omniauth.auth"]
+      redirect_to new_user_registration_url
+    end
+  end
+end
+

app/helpers/application_helper.rb

@@ -4,7 +4,7 @@ def project_compatibility(project_user_score)
     number_of_questions = ProfileQuestion.all.count
     high_score = number_of_questions * ProfileAnswer::HIGH_SCORE
     medium_score = number_of_questions * (ProfileAnswer::HIGH_SCORE/2)
-    score = project_user_score.score
+    score = project_user_score ? project_user_score.score : 0
 
     if score == 0
       return 'Average'

app/models/user.rb

@@ -2,7 +2,7 @@ class User < ActiveRecord::Base
   # Include default devise modules. Others available are:
   # :token_authenticatable, :encryptable, :confirmable, :lockable, :timeoutable and :omniauthable
   devise :database_authenticatable, :registerable,
-    :recoverable, :rememberable, :trackable, :validatable
+    :recoverable, :rememberable, :trackable, :validatable, :omniauthable
 
   has_many :profile_answers, :as => :answerable
   has_many :projects, :through => :attendees
@@ -24,6 +24,15 @@ def update_profile_answers(scores)
     return true
   end
 
+  def self.find_for_facebook_oauth(access_token, signed_in_resource=nil)
+    data = access_token['extra']['raw_info']
+    if user = User.find_by_email(data["email"])
+      user
+    else # Create a user with a stub password.
+      User.create!(:email => data["email"], :password => Devise.friendly_token[0,20])
+    end
+  end
+
   private
 
   def update_project_user_score

app/views/dashboard/_user_dashboard.html.haml

@@ -14,9 +14,8 @@
           = link_to project.name, project
           %br
           = "#{project.start_date} - #{project.attendees.find_by_user_id(current_user.id).accepted ? 'Accepted' : 'Awaiting acceptance'}"
-
     - else
-
+      You don't have any upcoming projects - start browsing the project listing to find something to do
 
   .span5
     %h2 Suggested Projects

app/views/devise/sessions/new.html.erb

@@ -1,22 +1,34 @@
 <fieldset>
   <legend><%= resource_name.to_s.titleize %> login</legend>
 
-  <%= form_for(resource, :as => resource_name, :url => session_path(resource_name)) do |f| %>
-    <div class="clearfix"><%= f.label :email %><br />
-      <div class = "input"><%= f.email_field :email %></div>
-    </div>
+  <div class="row">
+    <div class="span8">
+      <%= form_for(resource, :as => resource_name, :url => session_path(resource_name)) do |f| %>
+        <div class="clearfix"><%= f.label :email %><br />
+          <div class = "input"><%= f.email_field :email %></div>
+        </div>
 
-    <div class="clearfix"><%= f.label :password %><br />
-      <div class = "input"><%= f.password_field :password %></div>
-    </div>
+        <div class="clearfix"><%= f.label :password %><br />
+          <div class = "input"><%= f.password_field :password %></div>
+        </div>
 
-    <% if devise_mapping.rememberable? -%>
-      <div class="input">
-        <div class="clearfix"><%= f.check_box :remember_me %> <span>Remember me</span></div>
+        <% if devise_mapping.rememberable? -%>
+          <div class="input">
+            <div class="clearfix"><%= f.check_box :remember_me %> <span>Remember me</span></div>
+          </div>
+        <% end -%>
       </div>
-    <% end -%>
 
+      <% if resource.class != Organization -%>
+        <div class"span8">
+          <p>Or sign-in with Facebook</p>
+          <%= link_to(image_tag("/assets/btn-fb-connect.png"), user_omniauth_authorize_path(:facebook)) %>
+        </div>
+      <% end -%>
+
+    </div>
     <div class="actions"><%= f.submit "Sign in", :class => 'btn primary' %></div>
   <% end %>
 </fieldset>
+
 <%= render :partial => "devise/shared/links" %>

config/initializers/devise.rb

@@ -6,6 +6,8 @@
   # note that it will be overwritten if you use your own mailer class with default "from" parameter.
   config.mailer_sender = "please-change-me-at-config-initializers-devise@example.com"
 
+  config.omniauth :facebook, "187436761304090", "a7f08628cc9f571f1cc08b7c57c03b13"
+
   # Configure the class responsible to send e-mails.
   # config.mailer = "Devise::Mailer"
 

config/routes.rb

@@ -1,6 +1,6 @@
 Helpa::Application.routes.draw do
 
-  devise_for :users
+  devise_for :users, :controllers => { :omniauth_callbacks => "omniauth_callbacks" }
   devise_for :organizations
 
   namespace :admin do