OpenID auth using Launchpad and Stackexchange works

app/controllers/users/omniauth_callbacks_controller.rb

@@ -1,45 +1,24 @@
 class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
 
-  # def passthru
-  #   raise
-  #   send(params[:provider]) if providers.include?(params[:provider])
-  # end
+  # Workaround for https://github.com/plataformatec/devise/issues/2432
+  skip_before_filter :verify_authenticity_token
 
   def launchpad
-    # You need to implement the method below in your model (e.g. app/models/user.rb)
-    @user = User.from_omniauth(request.env["omniauth.auth"])
-
-    if @user.persisted?
-      flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => "Launchpad"
-      sign_in_and_redirect @user, :event => :authentication
-    else
-    #   session["devise.google_data"] = request.env["omniauth.auth"].except(:extra) #Removing extra as it can overflow some session stores
-      redirect_to new_user_session_url, alert: @user.errors.full_messages.join("\n")
-    end
+    login_via 'Launchpad'
   end
 
-  def google_oauth2
-    # You need to implement the method below in your model (e.g. app/models/user.rb)
-    @user = User.from_omniauth(request.env["omniauth.auth"])
-
-    if @user.persisted?
-      flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => "Google"
-      sign_in_and_redirect @user, :event => :authentication
-    else
-    #   session["devise.google_data"] = request.env["omniauth.auth"].except(:extra) #Removing extra as it can overflow some session stores
-      redirect_to new_user_session_url, alert: @user.errors.full_messages.join("\n")
-    end
+  def stackexchange
+    login_via 'StackExchange'
   end
 
-  def amazon
+  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"])
 
     if @user.persisted?
-      flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => "Amazon"
+      flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => provider_name
       sign_in_and_redirect @user, :event => :authentication
     else
-    #   session["devise.google_data"] = request.env["omniauth.auth"].except(:extra) #Removing extra as it can overflow some session stores
       redirect_to new_user_session_url, alert: @user.errors.full_messages.join("\n")
     end
   end
@@ -48,9 +27,4 @@ class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
     redirect_to root_path
   end
 
-  private
-
-  # def providers
-  #   ["twitter", "google_oauth2", "launchpad", "amazon"]
-  # end
 end

app/models/user.rb

@@ -1,23 +1,25 @@
 class User < ApplicationRecord
+
   # Include default devise modules. Others available are:
   # :confirmable, :lockable, :timeoutable and :omniauthable
   devise :database_authenticatable,
     # :registerable,
-    :recoverable,
+    # :recoverable,
     # :rememberable,
     :trackable,
     # :validatable,
     :timeoutable,
     # :lockable,
-    :omniauthable, :omniauth_providers => [:google_oauth2, :launchpad, :amazon]
-    # :omniauthable, :omniauth_providers => [:launchpad, :google]
+    :omniauthable, :omniauth_providers => [:launchpad,:stackexchange]
 
 
   def self.from_omniauth(auth)
-      where(provider: auth.provider, uid: auth.uid).first_or_create do |user|
+      where(provider: auth.provider, email: auth.info.email).first_or_create do |user|
         user.provider = auth.provider
         user.uid = auth.uid
         user.email = auth.info.email
+        user.name = auth.info.name
+        # Set a random password
         user.password = Devise.friendly_token[0,20]
       end
   end

app/views/devise/sessions/new.slim

@@ -38,13 +38,18 @@
 / = link_to "Sign in with Google", user_google_oauth2_omniauth_authorize_path
 
 = link_to "Sign in with Launchpad", user_launchpad_omniauth_authorize_path
+= link_to "Sign in with StackExchange", user_stackexchange_omniauth_authorize_path
 
-div
-  = link_to image_tag('/images/sso/google.png'), user_google_oauth2_omniauth_authorize_path
+/ div
+/   = link_to image_tag('/images/sso/google.png'), user_google_oauth2_omniauth_authorize_path
 
-div
-  = link_to image_tag('/images/sso/amazon.png'), user_amazon_omniauth_authorize_path
-
-div
-  stackexchange
+/ div
+/   = link_to "google new", user_google_omniauth_authorize_path
   
+/ 
+/ div
+/   = link_to image_tag('/images/sso/amazon.png'), user_amazon_omniauth_authorize_path
+/ 
+/ div
+/   stackexchange
+/   

app/views/packages/my_uploads.slim

@@ -1,23 +0,0 @@
-// Show users' own uploaded screenshots in this session
-
-/ = link_to 'Back', :back, class: 'button small'
-
-.row.packagepage
-  h1 Screenshots you uploaded
-  
-  - @packages.each do |package|
-    h2 Package #{package.name}
-    .subtitle
-      = package.description
-
-  .small-9.large-10.columns
-    - if @current_users_screenshots.length>0
-      .row.small-up-1.medium-up-3.large-up-4.grid-thumbnails
-        - @current_users_screenshots.each do |screenshot|
-          .column
-
-            a.black.fancybox href=screenshot.image.url(:large, timestamp: false)
-              div.grid-thumbnail
-                = image_tag(screenshot.image.url(:thumb, timestamp: false), alt: screenshot.caption, class: 'thumbnail')
-              div
-                = screenshot.description