Another way to accomplish this is to use the global variable $_SESSION to store whatever you want the notice to be. I wrote a PHP class and wrapper function to keep track of the notices so you don’t have to write to the database.
<?php
/**
* Class to handle admin notices
*
*/
class BricNotices {
public function __construct() {
//Start the session
add_action( 'admin_init', [ $this, 'start_session' ] );
add_action( 'admin_notices', [ $this, 'display_notices' ] );
}
/**
* Add a notice
*
*
*/
public function add_notice( $text = '', $type = 'success' ) {
$_SESSION['bric_notices'][] = [
'type' => $type,
'text' => $text,
];
}
/**
* Display the notices
*
*
*/
public function display_notices() {
if ( !isset( $_SESSION['bric_notices'] ) && empty( $_SESSION['bric_notices'] ) ) {
return;
}
if ( is_array( $_SESSION['bric_notices'] ) ) {
foreach ( $_SESSION['bric_notices'] as $this->notice ) {
$this->print_notice();
}
}
//Delete the notices
unset( $_SESSION[ 'bric_notices' ] );
}
private function print_notice() {
//notice types = error, warning, success, info
printf( '<div class="notice notice-%s is-dismissible"><p>%s</p></div>', $this->notice['type'], $this->notice['text'] );
}
/**
* Enable the use of the global $_SESSION variable
*
*
*
*/
public function start_session() {
if ( !isset( $_SESSION )) {
session_start();
}
}
}
global $BricNotices;
$BricNotices = new BricNotices();
function add_bric_notice( $text = '', $type = 'success' ) {
global $BricNotices;
$BricNotices->add_notice( $text, $type );
}
