Devise: after sign-in redirect back to cancan protected path

Question

I am using both Cancan and Devise. I have the following so when cancan errors redirects the page to sign in path:

  check_authorization :unless => :devise_controller?
  rescue_from CanCan::AccessDenied do |exception|
    redirect_to new_user_session_path, :alert => exception.message
  end

That works well. However, I want to be able to redirect back to that Cancan protected page once user has signed in.

I use the script in the Devise wiki here (How To: redirect to a specific page on successful sign in).

  def after_sign_in_path_for(resource)
    sign_in_url = url_for(:action => 'new', :controller => 'sessions', :only_path => false, :protocol => 'http')
    if request.referer == sign_in_url
      # this path is used
      super
    else
      stored_location_for(resource) || request.referer || root_path
    end
  end

But this will always use the super method, which goes to index page. What have I done wrong?

Answer 1

I know it's late, but I solved it by adding session["user_return_to"] to rescue_from

check_authorization :unless => :devise_controller?
rescue_from CanCan::AccessDenied do |exception|
  session["user_return_to"] = request.fullpath
  redirect_to new_user_session_path, :alert => exception.message
end

and removing the after_sign_in_path_for method override. Then Devise will redirect to session["user_return_to"] after sign in.