partial_path

# File actionpack/lib/action_view/renderer/partial_renderer.rb, line 357
    def partial_path(object = @object)
      @partial_names[object.class.name] ||= begin
        object = object.to_model if object.respond_to?(:to_model)
        object.class.model_name.partial_path.dup.tap do |partial|
          path = @lookup_context.prefixes.first
          merge_path_into_partial(path, partial)
        end
      end
    end