How to make devise redirects to facebook login when user is not authenticated?

Question

Rails application that uses devise and omniauth for authentication. Only facebook users are permitted. Facebook login working well, omniauth call backs working well.

My Gemfile include the basic, among other:

gem 'devise'
gem 'omniauth'
gem 'omniauth-facebook'

In my "books" view controller, i've added devise authentication:

class BooksController < ApplicationController
before_filter :authenticate_user!

The problem: when user authenticate_user! fails, devise is redirecting to a sign_in page (where user type username, e-mail, password, confirmation). I do not want this behavior as I only want facebook users. I need devise to redirect to facebook login if authenticate_user fails.

How to make devise redirects to facebook login when user is not authenticated?

Please look at this almost same question http://stackoverflow.com/questions/5832631/devise-redirect-after-login-fail — Santosh, Nov 23 '12 at 17:21

score 4 · Accepted Answer · edited Jan 22 '14 at 19:25

4

Best way will be to use a custom devise failure app and override the redirect function.

Something like below will work :

Create a initializer, something like custom_failure_app.rb.
Create a class CustomFailureApp which will inherit the Devise::FailureApp

Override the redirect function.

class CustomFailureApp < Devise::FailureApp

  # will be called wen some failure occurs. 
  # Like unauthorized, session_expiry etc
  def redirect 
    message = warden.message || warden_options[:message]
    if message == :timeout
        # session expires
    else
        # unauthorized
        # redirect_to "facebook.com"
    end
  end
end

Add another initializer, something like devise.rb and put the following code in it.

Devise.setup do |config|
  config.warden do |manager|
    manager.failure_app = CustomFailureApp
  end
end

edited Jan 22 '14 at 19:25

Alex.Bullard

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answered Nov 23 '12 at 17:10

Ramandeep Singh

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Thanks - it worked. I've also had to add the initializer code config.warden do |manager| manager.failure_app = CustomFailure end and the lib directory scanning config.autoload_paths += %W(#{config.root}/lib) – Oren Pinsky Nov 23 '12 at 17:58
I can't get this to work, I still get redirected to the login page – Chris Edwards Jan 16 '13 at 15:57

score 0 · Answer 2 · answered Nov 23 '12 at 16:59

0

You can try adding

match '/auth/failure', :to => 'your_controller#failure'

to your routes.rb and then redirecting from within the failure method inside your controller.

answered Nov 23 '12 at 16:59

toashd

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Thanks - but it not working as expected. When authenticate_user! fails (because user is not logged in yet), it is redirected to /users/sign_in and /auth/failure route is not called – Oren Pinsky Nov 23 '12 at 17:20

score 0 · Answer 3 · edited May 23 '17 at 10:25

0

Ryan Bates gives great screencast http://railscasts.com/episodes/360-facebook-authentication how to use "omniauth-facebook" gem. And you can use this fix to sign in with standart Devise methods: Sign in to Devise using omniauth-facebook

edited May 23 '17 at 10:25

Community

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answered Jun 05 '13 at 15:26

Gediminas Šukys

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How to make devise redirects to facebook login when user is not authenticated?

3 Answers3