WordPress:覆盖子主题中的父主题类功能 [英] WordPress: Override parent theme class function in child theme

问题描述

我想覆盖子主题中的函数，它是在父主题的类中定义的.

I want to override function in child theme, which is defined inside a class in parent theme.

这是示例代码:

class A extends B{
   function __construct(){
      $this->add_ajax('sync_post_data', 'need_to_override');
   }
   //other functions
   function need_to_override(){
      //function code
   }

}

附加信息:

B 类扩展 C 类，C 类是定义 add_ajax 的根类.

Class B extends Class C and Class C is the root class where add_ajax is defined.

我尝试过的:

1. 由于该函数不可插入，所以我无法直接在子主题中覆盖函数.

2. 其次，我尝试删除 ajax 操作并添加我的自定义操作.它引发 500 内部服务器错误.

1. As the function is not pluggable so I can't override function directly in child theme.

2. Secondly I tried to remove ajax action and add my custom action. It throws 500 internal server error.

remove_action( 'wp_ajax_sync_post_data', 'need_to_override' );
add_action( 'wp_ajax_sync_post_data', 'custom_function' );

function custom_function(){
   //function code with my custom modification
}

任何帮助请...

推荐答案

您只需两个简单的步骤即可覆盖该类的方法.

You can just override that method of class in just two simple steps.

方法如下:

1. 打开子主题functions.php

2. 像这样创建新类:

1. Open child theme functions.php

2. Create new class like this:

add_action( 'after_setup_theme', function() {


   class D extends A{

      function need_to_override(){
         //original function code with your custom modifications
      }

   }

   new D();
});

PS:它会起作用，但我不确定这是否是最好的方法！

PS: It will work but I'm not sure if it is the best way or not!

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