Can I map resources to a different controller?

The rails guide specifies how to use specific controllers for certain routes.

You can do something like this:

Rails.application.routes.draw do
  resources :products, controller: "catalog" 
  # but rails conventions suggests you should pluralise your controller name
  # so use "catalogs" (plural) instead of the singular "catalog"
end

For the record: map.resources :products, :controller => "catalog" is how you do this.