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:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 | // search all taxonomies, based on: http://projects.jesseheap.com/all-projects/wordpress-plugin-tag-search-in-wordpress-23 function atom_search_where($where){ global $wpdb; if (is_search()) $where .= "OR (t.name LIKE '%".get_search_query()."%' AND {$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_where','atom_search_where'); add_filter('posts_join', 'atom_search_join'); add_filter('posts_groupby', 'atom_search_groupby'); |
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