Wordpress multiple roles

functions.php

Добавим мультивыбор ролей пользователя. 
Добавим папку multi-role-selector в папке /public_html/wp-content/plugins
Создадим файл multi-role-selector.php

<?php
/*
Plugin Name: Выбор ролей
Description: Позволяет назначать несколько ролей одному пользователю.
Version: 1.0
Author: avs-alexandra
*/

function mrpu_plugin_init()
{
	load_plugin_textdomain('multiple-roles-per-user', false, dirname(plugin_basename(__FILE__)) . '/languages/');
}
add_action('plugins_loaded', 'mrpu_plugin_init');

function mrpu_admin_enqueue_scripts($handle)
{
	if ('user-edit.php' == $handle) {
		// We need jQuery to move things around :)
		wp_enqueue_script('jquery');
	}
}
add_action('admin_enqueue_scripts', 'mrpu_admin_enqueue_scripts', 10);

/**
 * Adds the GUI for selecting multiple roles per user
 */
function mrpu_add_multiple_roles_ui($user)
{
	// Not allowed to edit user - bail
	if (!current_user_can('edit_user', $user->ID)) {
		return;
	}

	$current_action = current_action();
	$current_screen = get_current_screen();

	$roles = get_editable_roles();
	//Ensure only admins or users with edit_users role can assign roles
	$user_can_edit_users = current_user_can('edit_users');
	$user_roles = array_intersect(array_values($user->roles), array_keys($roles));

	if ($user_can_edit_users) :
?>
	<div class="mrpu-roles-container">
		<h3><?php _e('User Roles', 'multiple-roles-per-user'); ?></h3>
		<table class="form-table">
			<tr>
				<th><label for="user_credits"><?php _e('Roles', 'multiple-roles-per-user'); ?></label></th>
				<td>
					<?php foreach ($roles as $role_id => $role_data) : ?>
						<label for="user_role_<?php echo esc_attr($role_id); ?>">
							<input type="checkbox" id="user_role_<?php echo esc_attr($role_id); ?>" value="<?php echo esc_attr($role_id); ?>" name="mrpu_user_roles[]" <?php echo in_array($role_id, $user_roles) ? ' checked="checked"' : ''; ?> />
							<?php echo $role_data['name']; ?>
						</label>
						<br />
					<?php endforeach; ?>
					<br />
					<?php wp_nonce_field('mrpu_set_roles', '_mrpu_roles_nonce'); ?>
				</td>
			</tr>
		</table>
	</div>
	<?php endif; ?>
	<?php if ('profile' !== $current_screen->id) : ?>
		<?php
		// Do some hacking around to hide the built-in user roles selector
		// First hide it with CSS and then get rid of it with jQuery 
		?>
		<style>
			label[for="role"],
			select#role {
				display: none;
			}
		</style>
		<script type="text/javascript">
			(function($) {
				$(document).ready(function() {
					var row = $('select#role').closest('tr');
					var clone = row.clone();
					// clone.insertAfter( $('select#role').closest('tr') );
					row.html($('.mrpu-roles-container tr').html());
					$('.mrpu-roles-container').remove();
				})
			})(jQuery)
		</script>
	<?php endif; ?>
<?php }
add_action('edit_user_profile', 'mrpu_add_multiple_roles_ui', 0);
//When editing your own profile
add_action('show_user_profile', 'mrpu_add_multiple_roles_ui', 0);

/**
 * Saves the selected roles for the user
 */
function mrpu_save_multiple_user_roles($user_id)
{
	// Not allowed to edit user - bail
	if (!current_user_can('edit_user', $user_id) || !wp_verify_nonce($_POST['_mrpu_roles_nonce'], 'mrpu_set_roles')) {
		return;
	}

	$user = new WP_User($user_id);
	$roles = get_editable_roles();
	$new_roles = isset($_POST['mrpu_user_roles']) ? (array) $_POST['mrpu_user_roles'] : array();
	// Get rid of any bogus roles
	$new_roles = array_intersect($new_roles, array_keys($roles));
	$roles_to_remove = array();
	$user_roles = array_intersect(array_values($user->roles), array_keys($roles));
	if (!$new_roles) {
		// If there are no roles, delete all of the user's roles
		$roles_to_remove = $user_roles;
	} else {
		$roles_to_remove = array_diff($user_roles, $new_roles);
	}

	foreach ($roles_to_remove as $_role) {
		$user->remove_role($_role);
	}

	if ($new_roles) {
		// Make sure that we don't call $user->add_role() any more than it's necessary
		$_new_roles = array_diff($new_roles, array_intersect(array_values($user->roles), array_keys($roles)));
		foreach ($_new_roles as $_role) {
			$user->add_role($_role);
		}
	}
}
add_action('edit_user_profile_update', 'mrpu_save_multiple_user_roles');
//Own profile update hook
add_action('personal_options_update', 'mrpu_save_multiple_user_roles');

/**
 * Gets rid of the "Role" column and adds-in the "Roles" column
 */
function mrpu_add_roles_column($columns)
{
	$old_posts = isset($columns['posts']) ? $columns['posts'] : false;
	unset($columns['role'], $columns['posts']);
	$columns['mrpu_roles'] = __('Roles', 'multiple-roles-per-user');
	if ($old_posts) {
		$columns['posts'] = $old_posts;
	}

	return $columns;
}
add_filter('manage_users_columns', 'mrpu_add_roles_column');

/**
 * Displays the roles for a user
 */
function mrpu_display_user_roles($value, $column_name, $user_id)
{
	static $roles;
	if (!isset($roles)) {
		$roles = get_editable_roles();
	}
	if ('mrpu_roles' == $column_name) {
		$user = new WP_User($user_id);
		$user_roles = array();
		$_user_roles = array_intersect(array_values($user->roles), array_keys($roles));
		foreach ($_user_roles as $role_id) {
			$user_roles[] = $roles[$role_id]['name'];
		}

		return implode(', ', $user_roles);
	}

	return $value;
}
add_filter('manage_users_custom_column', 'mrpu_display_user_roles', 10, 3);