Code-Snippets-Functions/Execute a function on a child site/Relevanssi/exclude-post-attachments-from-search-results-but-keep-for-products.txt

add_filter( 'relevanssi_indexing_restriction', 'non_product_attachments' );
function non_product_attachments( $restriction ) {
	global $wpdb;
	$restriction['mysql']  .= " AND post.ID NOT IN (
      SELECT ID FROM $wpdb->posts
      WHERE post_type = 'attachment' AND post_parent NOT IN ( SELECT ID FROM $wpdb->posts WHERE post_type = 'product' ) ) ";
	$restriction['reason'] .= ' Non-product attachment';
	return $restriction;
}