map_resource_routes

# File actionpack/lib/action_controller/resources.rb, line 648
      def map_resource_routes(map, resource, action, route_path, route_name = nil, method = nil, resource_options = {} )
        if resource.has_action?(action)
          action_options = action_options_for(action, resource, method, resource_options)
          formatted_route_path = "#{route_path}.:format"

          if route_name && @set.named_routes[route_name.to_sym].nil?
            map.named_route(route_name, formatted_route_path, action_options)
          else
            map.connect(formatted_route_path, action_options)
          end
        end
      end