How do I display main query posts in random order using add_filter

Should be add_action not add_filter when using pre_get_posts add_action( ‘pre_get_posts’, ‘thefunction’); function thefunction($query) { if ( ! is_admin() && $query->is_main_query() ) { // Not a query for an admin page. // It’s the main query for a front end page of your site. // Let’s change the query using arguments. $query->set( ‘orderby’, ‘rand’ ); } … Read more