Sometimes there are cases when its necessary to get taxonomies links of post ranked in the hierarchy. WordPress has the function to get posts custom taxonomies links:
1 | <?php get_the_term_list($id, $taxonomy, $before, $sep, $after) ?> |
But: you cant get it by hierarchy! I had such a task. And I want to describe my decision of this task.
I wrote a little class:
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 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | <?php /** * Retrieve a post's terms as a list ordered by hierarchy. * * @param int $post_id Post ID. * @param string $taxonomy Taxonomy name. * @param string $term_divider Optional. Separate items using this. * @param string $reverse Optional. Reverse order of links in string. * @return string */ class GetTheTermList { public function get_the_term_list($post_id, $taxonomy, $term_divider = '/', $reverse = false) { $object_terms = wp_get_object_terms($post_id, $taxonomy); $parents_assembled_array = array(); //*** if (!empty($object_terms)) { foreach ($object_terms as $term) { $parents_assembled_array[$term->parent][] = $term; } } //*** $sorting_array = $this->sort_taxonomies_by_parents($parents_assembled_array); $term_list = $this->get_the_term_list_links($taxonomy, $sorting_array); if ($reverse) { $term_list = array_reverse($term_list); } $result = implode($term_divider, $term_list); return $result; } private function sort_taxonomies_by_parents($data, $parent_id = 0) { if (isset($data[$parent_id])) { if (!empty($data[$parent_id])) { foreach ($data[$parent_id] as $key => $taxonomy_object) { if (isset($data[$taxonomy_object->term_id])) { $data[$parent_id][$key]->childs = $this->sort_taxonomies_by_parents($data, $taxonomy_object->term_id); } } return $data[$parent_id]; } } return array(); } //only for taxonomies. returns array of term links private function get_the_term_list_links($taxonomy, $data, $result = array()) { if (!empty($data)) { foreach ($data as $term) { $result[] = '<a href="' . get_term_link($term->slug, $taxonomy) . '" rel="tag">' . $term->name . '</a>'; if (!empty($term->childs)) { //*** $res = $this->get_the_term_list_links($taxonomy, $term->childs, array()); if (!empty($res)) { //*** foreach ($res as $val) { if (!is_array($val)) { $result[] = $val; } } //*** } //*** } } } return $result; } } ?> |
Using of this php class is simple:
Example:
1 2 3 4 5 6 | <?php //SORTING TERMS OF CARS $term_list_object = new GetTheTermList(); $data['car_location'] = $term_list_object->get_the_term_list($post_id, 'carlocation', $term_divider); $data['car_producer'] = $term_list_object->get_the_term_list($post_id, 'carproducer', $term_divider); ?> |
This php class is for replace WordPress function get_the_term_list when it is important to get ordered by hierarchy taxonomies terms links of a post.
English
Arabic
Chinese (Simplified)
Chinese (Traditional)
Danish
Dutch
Finnish
French
German
Hebrew
Hindi
Indonesian
Irish
Italian
Japanese
Korean
Malay
Norwegian
Persian
Polish
Portuguese
Romanian
Serbian
Slovak
Spanish
Swedish
Thai
Turkish
Ukrainian
Vietnamese