WordPress get_posts exclude uncategorized

WordPress get_posts 排除未分類

/**
 * WordPress get_posts exclude uncategorized
 * WordPress get_posts 排除未分類
 * @author v123.tw <ann71727@email.com>
 * @link https://v123.tw/wordpress-get_posts-exclude-uncategorized/
 */
function v123_hide_uncategorized_posts( $query ) {
    if( ! is_admin() ) {
        $query->set( 'cat', '-1' );
    }
}
add_action( 'pre_get_posts', 'v123_hide_uncategorized_posts' );