how can i clear the inner resources route in a nested route

rubyonrails-talk
1

I have :     map.resources :users do |users|       user.resources :addressbooks     end this provide me with url like '/users/1/addressbooks/1' and '/ addressbooks/1'. My problem is that how i'm able to clear the '/addressbooks/1' route and making it not to work? I only wanna the former to work.