How to use add_meta_type_meta action in WordPress

add_meta_type_meta Action

The dynamic portion of the hook name, $meta_type, refers to the meta object type (post, comment, term, user, or any other type with an associated meta table).

To use add_meta_type_meta action, first you have to register it using add_action. You can write this code into functions.php of your activated theme or in a custom WordPress Plugin.

At WePlugins, we always prefer to create a custom WordPress Plugin while using hooks so nothing breaks when you update your WordPress Theme in the future.

In the below live example, we have defined a function weplugins_execute_on_add_meta_type_meta_event which takes 3 parameters and we registered using add_action. The first parameter add_meta_type_meta is the name of the hook, the second parameter weplugins_execute_on_add_meta_type_meta_event is the name of the function which needs to be called, the third parameter is the priority of calling the hook if the same hook is used multiple times, and the last parameter is the number of arguments (if any) to be passed in the registered function.

Sometimes, you have to remove a registered hook so you can use remove_action to remove add_meta_type_meta action.

Parameters

Below are the 3 parameters required to use this hook.

• $object_id : (int) ID of the object metadata is for.
• $meta_key : (string) Metadata key.
• $_meta_value : (mixed) Metadata value.

Live Examples

Example 1: Basic Usage

Below is an example of how you can use this hook in its simplest form.

    function weplugins_execute_on_add_meta_type_meta_event($object_id, $meta_key, $_meta_value){
       // You can write code here to be executed when this action occurs in WordPress.
       // Use the parameters received in the function arguments & implement the required additional custom functionality according to your website requirements.
    }
    // Add the action
    add_action( "add_meta_type_meta", "weplugins_execute_on_add_meta_type_meta_event" , 10, 3);
    

Example 2: Removing a Hook Callback

To remove a hook callback, use the example below.

    remove_action( "add_meta_type_meta", "weplugins_execute_on_add_meta_type_meta_event", 10, 3 );
    

Please make sure to provide the same callback function name, priority, and number of arguments while removing the hook callback.

Example 3: Conditional Execution

Sometimes you may want to execute the hook only under specific conditions. Below is an example:

    function weplugins_conditional_meta_type_meta_event($object_id, $meta_key, $_meta_value){
       // Check if the meta key is 'custom_key' before executing
       if ($meta_key == 'custom_key') {
           // Your custom code here
       }
    }
    // Add the action with conditions
    add_action( "add_meta_type_meta", "weplugins_conditional_meta_type_meta_event" , 10, 3);
    

Contact Us

If you’re having any trouble using this hook and need customization, please contact us and we’d be happy to assist you.