To add a route to the collection:
resources :photos do collection do get 'search' end end
This will enable Rails to recognize paths such as /photos/search with GET, and route to the search action of PhotosController. It will also create the search_photos_url and search_photos_path route helpers.
# File actionpack/lib/action_dispatch/routing/mapper.rb, line 1281 def collection unless resource_scope? raise ArgumentError, "can't use collection outside resource(s) scope" end with_scope_level(:collection) do scope(parent_resource.collection_scope) do yield end end end