class ActionDispatch::Routing::PolymorphicRoutes::HelperMethodBuilder

def handle_model(record)
  args  = []
  model = record.to_model
  named_route = if model.persisted?
    args << model
    get_method_for_string model.model_name.singular_route_key
  else
    get_method_for_class model
  end
  [named_route, args]
end