public static function course_product_images_meta($value, $post_id, $meta_key, $single)
{
if ('mp_product_images' === $meta_key && !self::$looping) {
// Avoid looping, because we're calling this meta again.
self::$looping = true;
$product_images = get_post_meta($post_id, $meta_key, $single);
if (empty($product_images)) {
$course_id = !empty($post_id) ? get_post_meta($post_id, 'course_id', true) : 0;
$featured_url = !empty($course_id) ? get_post_meta($course_id, 'featured_url', true) : '';
$admin_edit = isset($_GET['action']) && 'edit' === $_GET['action'];
$value = !empty($featured_url) && !$admin_edit ? $featured_url : $value;
}
// No longer looping
self::$looping = false;
}
return $value;
}
