Google authentication added

app/controllers/users/omniauth_callbacks_controller.rb

@@ -11,6 +11,10 @@ class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
     login_via 'StackExchange'
   end
 
+  def google_oauth2
+    login_via 'Google'
+  end
+
   def login_via(provider_name)
     # You need to implement the method below in your model (e.g. app/models/user.rb)
     @user = User.from_omniauth(request.env["omniauth.auth"])

app/models/user.rb

@@ -10,7 +10,11 @@ class User < ApplicationRecord
     # :validatable,
     :timeoutable,
     # :lockable,
-    :omniauthable, :omniauth_providers => [:launchpad,:stackexchange]
+    :omniauthable, :omniauth_providers => [
+      :launchpad,
+      :stackexchange,
+      :google_oauth2
+    ]
 
 
   def self.from_omniauth(auth)
@@ -23,19 +27,5 @@ class User < ApplicationRecord
         user.password = Devise.friendly_token[0,20]
       end
   end
-  #
-  # def self.from_omniauth(access_token)
-  #     data = access_token.info
-  #     user = User.where(:email => data["email"]).first
-  #
-  #     # Uncomment the section below if you want users to be created if they don't exist
-  #     # unless user
-  #     #     user = User.create(name: data["name"],
-  #     #        email: data["email"],
-  #     #        password: Devise.friendly_token[0,20]
-  #     #     )
-  #     # end
-  #     user
-  # end
 
 end

app/views/devise/sessions/new.slim

@@ -39,6 +39,7 @@
 
 = link_to "Sign in with Launchpad", user_launchpad_omniauth_authorize_path
 = link_to "Sign in with StackExchange", user_stackexchange_omniauth_authorize_path
+= link_to "Sign in with Google", user_google_oauth2_omniauth_authorize_path
 
 / div
 /   = link_to image_tag('/images/sso/google.png'), user_google_oauth2_omniauth_authorize_path