WordPress: Override parent theme class function in child theme

Question

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

Here is the sample code:

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

}

Additional Information:

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

What I've tried:

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

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
}

Any help please...

Atlas_Gondal Atlas_Gondal · Accepted Answer · 2018-11-16T05:13:26

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

Here's how:

Open child theme functions.php

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

WordPress: Override parent theme class function in child theme

1 Answers