How to use post_field filter in WordPress

post_field filter

To use the post_field filter, first you have to register it using add_filter. You can write this code into functions.php of your activated theme or in a custom WordPress Plugin. 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_modify_post_field_defaults and we registered it using add_filter. The first parameter post_field is the name of the hook, the second parameter weplugins_modify_post_field_defaults 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_filter to remove the post_field filter.

Parameters

• No parameters

Live Example 1: Basic Usage

Below is an example of how you can use this hook.

    function weplugins_modify_post_field_defaults() { 
        // Update the $title variable according to your website requirements and return this variable. 
        // You can modify the $title variable conditionally too if you want.
        return $title; 
    }
    // add the filter
    add_filter( "post_field", "weplugins_modify_post_field_defaults");
    

Live Example 2: Removing a Hook Callback

To remove a hook callback, use the example below.

    remove_filter( "post_field", "weplugins_modify_post_field_defaults");
    

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

Live Example 3: Conditional Hook

Here’s how you might conditionally modify the post field.

    function weplugins_modify_post_field_conditionally($field) {
        if ($field == 'specific_condition') {
            // Modify the $field according to your needs
        }
        return $field;
    }
    add_filter( "post_field", "weplugins_modify_post_field_conditionally");
    

Contact Us

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