Reply To: Ordering Search Results

Thank you very much. I may have found a possible solution, that may work in most cases, but to be honest I am not entirely sure. I conducted a few tests, and it seemed to work normally:
– Test 1: https://i.imgur.com/bteS8mb.png
– Test 2: https://i.imgur.com/ogioCKH.png

The final code is below. You can change the $sub_string variable on line 3, that is printed before each sub category.

add_filter('asp_results', 'asp_sort_terms_by_parent', 10, 1);
function asp_sort_terms_by_parent( $results ) {
	$sub_string = '—'; // The string printed before each sub-level category
	
	// --- DO NOT CHANGE ANYTHING BELOW ---
    $term_ids = array();
    $res_terms = array();
    $sorted_terms = array();
    $final_terms = array();

    foreach ( $results as $k => $r ) {
        if ( $r->content_type == 'term' ) {
            $term_ids[] = $r->id;
            $res_terms[$r->id] = $r;
            unset($results[$k]);
        }
    }

    if ( count($term_ids) > 0 ) {
        $terms = get_terms(array(
                'include' => $term_ids,
				'hide_empty' => false
        ));
	
        wd_sort_terms_hierarchicaly($terms, $sorted_terms);
        wd_flatten_hierarchical_terms( $sorted_terms, $terms );
        foreach ($terms as $k => $t) {
			$tt = $res_terms[$t->term_id];
			$tt->level = $t->level;
            $final_terms[] = $tt;
        }
		foreach ($final_terms as &$fr) {
			if ( $fr->level > 0 )
				$fr->title = str_repeat($sub_string, $fr->level) . ' ' . $fr->title;
		}
    }
    $results = array_merge($final_terms, $results);

    return $results;
}