How to get requested controller name, action name and id in Rails3 view

To get requested controller name, action name and id in view we will call a simple helper function. For example we have the '/users/show/23' request, by routing rule: 'match ':controller(/:action(/:id(.:format)))''

#to get controller name:

<%= controller.controller_name %>

#=> 'users'

#to get action name, it is the method:

<%= controller.action_name %>

#=> 'show'

#to get id information:

<%= ActionController::Routing::Routes.recognize_path(request.url)[:id] %>

#=> '23'