module ActionDispatch::Routing::Mapper::Resources

route helpers.
create the search_photos_url and search_photos_path
with GET, and route to the search action of PhotosController. It will also
This will enable Rails to recognize paths such as /photos/search

end
end
get 'search'
collection do
resources :photos do

To add a route to the collection:

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