Omniauth multiple facebook login strategy

devise.rb

# initializers/devise.rb

config.omniauth :facebook, [APP_ID], [APP_SECRET]
config.omniauth :facebook_app1, [APP_ID], [APP_SECRET], :iframe => true, :scope => 'publish_stream,offline_access,email'
config.omniauth :facebook_app2, [APP_ID], [APP_SECRET], :iframe => true, :scope => 'publish_stream,offline_access,email'

links.rb

= link_to "Main login with Facebook", user_omniauth_authorize_path(:facebook)

= link_to "Login inside Facebook APP 1", user_omniauth_authorize_path(:facebook_app1)

= link_to "Login inside Facebook APP 2", user_omniauth_authorize_path(:facebook_app2)

omniauth.rb

# Create multiples Omniauth facebook login in the same app
# See this post for more details
# http://wealsodocookies.com/posts/how-to-create-multiple-facebook-omniauth-strategies-for-the-same-application


# initializers/omniauth.rb

module OmniAuth::Strategies

  class FacebookApp1 < Facebook
    def name 
      :facebook_app2
    end 
  end

  class FacebookApp2 < Facebook
    def name 
      :facebook_app2
    end 
  end

end

omniauthCallbacks.rb

# users/omniauthCallbacks.rb

class Users::OmniauthCallbacksController < Devise::OmniauthCallbacksController
  def facebook
    @user = User.find_for_facebook_oauth(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"] = env["omniauth.auth"]
      redirect_to new_user_registration_url
    end
  end

  def facebook_app1
    
    @user = User.find_for_facebook_oauth(env["omniauth.auth"], current_user)

    if @user.persisted?
      flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => "Facebook"
      sign_in @user, :event => :authentication

      redirect_to "[FACEBOOK_APP1_URL]"
    else
      session["devise.facebook_data"] = env["omniauth.auth"]
      redirect_to new_user_registration_url
    end
  end

  def facebook_app2
    
    @user = User.find_for_facebook_oauth(env["omniauth.auth"], current_user)

    if @user.persisted?
      flash[:notice] = I18n.t "devise.omniauth_callbacks.success", :kind => "Facebook"
      sign_in @user, :event => :authentication

      redirect_to "[FACEBOOK_APP2_URL]"
    else
      session["devise.facebook_data"] = env["omniauth.auth"]
      redirect_to new_user_registration_url
    end
  end

end