来瞧瞧递归式被动态
+config.action_view.prefix_partial_path_with_controller_namespace+ determines whether or not partials are looked up from a subdirectory in templates rendered from namespaced controllers
config.action_view.prefix_partial_path_with_controller_namespace 用来指定控制器是否从模板的子目录中根据控制器的命名空间搜索 partial 模板。
