Include custom taxonomy term in search

I have two custom taxonomies applied to two custom post types. the terms list on the sidebar just fine and will list all posts associated with it. However, if you search one of the terms in specific, it doesn’t bring up a post with that term.

Search for term “PQRI”

I get nothing. Any ideas? I’ve tried using various search plugins but they either break my custom search parameters or just don’t work.


I would recommend the Search Everything plugin too, but if you want to implement this using WP’s search function, here’s the code I’m using in my Atom theme:

// search all taxonomies, based on:

function atom_search_where($where){
  global $wpdb;
  if (is_search())
    $where .= "OR ( LIKE '%".get_search_query()."%' AND {$wpdb->posts}.post_status="publish")";
  return $where;

function atom_search_join($join){
  global $wpdb;
  if (is_search())
    $join .= "LEFT JOIN {$wpdb->term_relationships} tr ON {$wpdb->posts}.ID = tr.object_id INNER JOIN {$wpdb->term_taxonomy} tt ON tt.term_taxonomy_id=tr.term_taxonomy_id INNER JOIN {$wpdb->terms} t ON t.term_id = tt.term_id";
  return $join;

function atom_search_groupby($groupby){
  global $wpdb;

  // we need to group on post ID
  $groupby_id = "{$wpdb->posts}.ID";
  if(!is_search() || strpos($groupby, $groupby_id) !== false) return $groupby;

  // groupby was empty, use ours
  if(!strlen(trim($groupby))) return $groupby_id;

  // wasn't empty, append ours
  return $groupby.", ".$groupby_id;

add_filter('posts_join', 'atom_search_join');
add_filter('posts_groupby', 'atom_search_groupby');

It’s based on the Tag-Search plugin:

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