Devise authentication for sinatra app mounted in Rails

Question

I am using -

• Rails 3.2.2
• Ruby 1.9.3
• Devise 2.0.4

my route file looks like this:

Foo::Application.routes.draw do
  devise_for :admins

  root :to => "home#index"
  authenticate :admin do
    mount Simple::App, at: '/simple'
  end 
end

access under /simple needs to be authenticated.

However if not signed in , access to /simple/* will be redirect to /simple/admin/sign_in instead of just /admin/sign_in which creates a redirect loop.

Do I need to create a custom failure_app to correct this behavior?

Thanks!

Answer 1

 Foo::Application.routes.draw do
   devise_for(:admins)

   root(to: 'home#index')

   match('/simple/admins/sign_in' => redirect('/admins/sign_in'))
   authenticate(:admin) do
     mount(Simple::App, at: 'simple')
   end 
 end