gistfile1.txt

TypeError (can't convert String into Integer):
  app/models/user.rb:12:in `[]'
  app/models/user.rb:12:in `find_for_google_apps_oauth'
  app/controllers/users/omniauth_callbacks_controller.rb:17:in `google_apps'

gistfile2.txt

class User < ActiveRecord::Base
  # Include default devise modules. Others available are:
  # :token_authenticatable, :confirmable, :lockable and :timeoutable
  devise :database_authenticatable, :omniauthable, :registerable,
         :recoverable, :rememberable, :trackable, :validatable

  # Setup accessible (or protected) attributes for your model
  attr_accessible :email, :password, :password_confirmation, :remember_me
  
  def self.find_for_google_apps_oauth(access_token, signed_in_resource=nil)
    data = access_token['extra'],['user_hash']
    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
end

gistfile3.txt

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
  def google_apps
    # You need to implement the method below in your model
    @user = User.find_for_google_apps_oauth(env["omniauth.auth"], current_user)

    if @user.persisted?
      flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => "Google"
      sign_in_and_redirect @user, :event => :authentication
    else
      session["devise.google_apps_data"] = env["omniauth.auth"]
      redirect_to new_user_registration_url
    end
  end
end