Sometimes it is good to hide a user from other users so that user won't be deleted or modified accidentally by another administrator. This especially good for hiding the hosting user or any machine/automation user.
Setup
So let's setup a plugin main file. Within wp-content/mu-plugins, add a file, hide-user.php.
| <?php | |
| /** | |
| * Plugin Name: WPS User | |
| * Plugin URI: https://wpsmith.net | |
| * Description: User management. | |
| * Author: Travis Smith <t@wpsmith.net> | |
| * Author URI: https://wpsmith.net | |
| * Text Domain: wps | |
| * Domain Path: /languages | |
| * Version: 0.1.0 | |
| */ | |
| /** | |
| * Plugin main file. | |
| * | |
| * @package WPS\Plugins\HideUser | |
| * @author Travis Smith <t@wpsmith.net> | |
| * @license GPL-2.0+ | |
| * @link https://wpsmith.net/ | |
| */ | |
| namespace WPS\Plugins\HideUser; |
Now that we are setup, we can hide the user one of two ways:
- Using Composer in a Single File
- Putting All Code in a Single File
Mu-Plugin Using Composer
Create a composer.json file where we can require my user package (wpsmith/user) via composer.
| { | |
| "name": "wpsmith/hide-user", | |
| "description": "Hides user in WordPress Admin.", | |
| "type": "project", | |
| "license": "GPLv2+", | |
| "authors": [ | |
| { | |
| "name": "Travis Smith", | |
| "email": "t@wpsmith.net" | |
| } | |
| ], | |
| "minimum-stability": "dev", | |
| "require": { | |
| "wpsmith/user": "dev-master" | |
| } | |
| } |
Once we have this file, we can do a composer install which will install our packages into a folder called vendor automagically.
In the plugin file (hide-user.php), we need to require the composer autoloader.
| namespace WPS\Plugins\HideUser; | |
| // Require the composer autoloader. | |
| require 'vendor/autoload.php'; |
Finally, we add the simple code to hide the user(s):
| // Use the User Package & hide hidden_user1 & hidden_user2. | |
| \WPS\User\HideUser::get_instance( array( | |
| 'hidden_user1', | |
| 'hidden_user2', | |
| ) ); |
Mu-Plugin with All Code
In the plugin file (hide-user.php), we need to add a hook into the pre_user_query.
| namespace WPS\Plugins\HideUser; | |
| add_action( 'pre_user_query', 'WPS\Plugins\HideUser\pre_user_query' ); | |
| /** | |
| * Remove user from all user queries. | |
| * @global \wpdb $wpdb WordPress database abstraction object. | |
| * | |
| * @param \WP_User_Query $user_search The current WP_User_Query instance, | |
| * passed by reference. | |
| */ | |
| function pre_user_query( $user_search ) { | |
| /** | |
| * @var \WP_User $current_user \WP_User object for the current user. | |
| */ | |
| $current_user = wp_get_current_user(); | |
| if ( ! $current_user->exists() ) { | |
| return; | |
| } | |
| // If the current user is not hidden_user1, let's remove hidden_user1. | |
| if ( 'hidden_user1' !== $current_user->user_login ) { | |
| global $wpdb; | |
| // Now remove our hidden_user1 from the user query. | |
| $user_search->query_where = str_replace( | |
| 'WHERE 1=1', | |
| "WHERE 1=1 AND {$wpdb->users}.user_login != 'hidden_user1'", | |
| $user_search->query_where | |
| ); | |
| } | |
| } |
Credits: Image From Kristina Alexanderson.