How to use pre_user_nicename filter in WordPress

pre_user_nicename filter

Filters a user’s nicename before the user is created or updated.

To use pre_user_nicename 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 at WePlugins 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_pre_user_nicename_defaults which takes 1 parameter and we registered using add_filter. The first parameter pre_user_nicename is the name of the hook, the second parameter weplugins_modify_pre_user_nicename_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 pre_user_nicename filter.

Parameters

Below the 1 parameter is required to use this hook.

• $user_nicename : (string) The user’s nicename.

Live Example

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

Example 1: Modify User Nicename

This example modifies the user’s nicename according to the website requirements.

    function weplugins_modify_pre_user_nicename_defaults($user_nicename) {
        // Update the $user_nicename variable according to your website requirements and return this variable. You can modify the $user_nicename variable conditionally too if you want.
        return $user_nicename;
    }
    // add the filter
    add_filter("pre_user_nicename", "weplugins_modify_pre_user_nicename_defaults", 10, 1);
    

Example 2: Remove a Hook Callback

To remove a hook callback, use the example below.

    remove_filter("pre_user_nicename", "weplugins_modify_pre_user_nicename_defaults", 10, 1);
    

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

Example 3: Conditional Nicename Modification

This example modifies the user’s nicename conditionally based on specific criteria.

function weplugins_conditional_pre_user_nicename($user_nicename) {
// Check some condition and modify the nicename accordingly
if (strlen($user_nicename) < 5) { $user_nicename = 'user_' . $user_nicename; } return $user_nicename; } // add the filter add_filter("pre_user_nicename", "weplugins_conditional_pre_user_nicename", 10, 1); [/php] [wap_shortcode id="10"]

Contact Us

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