_wp_preview_post_thumbnail_filter() WP 4.6.0

Filters post thumbnail lookup to set the post thumbnail.

Хуков нет.

Возвращает

null|Массив. The default return value or the post thumbnail meta array.

Использование

_wp_preview_post_thumbnail_filter( $value, $post_id, $meta_key );

$value(null|массив|строка) (обязательный)

The value to return - a single metadata value, or an array of values.

$post_id(int) (обязательный)

Post ID.

$meta_key(строка) (обязательный)

Meta key.

Список изменений

Код _wp_preview_post_thumbnail_filter() wp preview post thumbnail filter ^{WP 5.8.1}

function _wp_preview_post_thumbnail_filter( $value, $post_id, $meta_key ) {
	$post = get_post();
	if ( ! $post ) {
		return $value;
	}

	if ( empty( $_REQUEST['_thumbnail_id'] ) ||
		empty( $_REQUEST['preview_id'] ) ||
		$post->ID != $post_id ||
		'_thumbnail_id' !== $meta_key ||
		'revision' === $post->post_type ||
		$post_id != $_REQUEST['preview_id'] ) {

		return $value;
	}

	$thumbnail_id = (int) $_REQUEST['_thumbnail_id'];
	if ( $thumbnail_id <= 0 ) {
		return '';
	}

	return (string) $thumbnail_id;
}