Code-Snippets-Functions/Execute a function on a child site/Relevanssi/exclude-older-content-indexing.txt

add_filter( 'relevanssi_indexing_restriction', 'rlv_exclude_old_posts' );
function rlv_exclude_old_posts( $restriction ) {
	global $wpdb;
	$restriction['mysql']  .= " AND YEAR(post.post_date) >= 2021 ";
	$restriction['reason'] .= ' Post too old';
	return $restriction;
}