- <?php
- * @file
- * Definition of views_handler_filter_term_node_tid_depth.
- */
-
- * Filter handler for taxonomy terms with depth.
- *
- * This handler is actually part of the node table and has some restrictions,
- * because it uses a subquery to find nodes with.
- *
- * @ingroup views_filter_handlers
- */
- class views_handler_filter_term_node_tid_depth extends views_handler_filter_term_node_tid {
- function operator_options($which = 'title') {
- return array(
- 'or' => t('Is one of'),
- );
- }
-
- function option_definition() {
- $options = parent::option_definition();
-
- $options['depth'] = array('default' => 0);
-
- return $options;
- }
-
- function extra_options_form(&$form, &$form_state) {
- parent::extra_options_form($form, $form_state);
-
- $form['depth'] = array(
- '#type' => 'weight',
- '#title' => t('Depth'),
- '#default_value' => $this->options['depth'],
- '#description' => t('The depth will match nodes tagged with terms in the hierarchy. For example, if you have the term "fruit" and a child term "apple", with a depth of 1 (or higher) then filtering for the term "fruit" will get nodes that are tagged with "apple" as well as "fruit". If negative, the reverse is true; searching for "apple" will also pick up nodes tagged with "fruit" if depth is -1 (or lower).'),
- );
- }
-
- function query() {
-
- if (count($this->value) == 0) {
- return;
- }
- elseif (count($this->value) == 1) {
-
-
- if (is_array($this->value)) {
- $this->value = current($this->value);
- }
- $operator = '=';
- }
- else {
- $operator = 'IN';
- }
-
-
-
-
-
- if (!empty($this->relationship)) {
- $this->table_alias = $this->relationship;
- }
-
- elseif (isset($this->query->table_queue[$this->query->base_table]['alias'])) {
- $this->table_alias = $this->query->table_queue[$this->query->base_table]['alias'];
- }
-
- else {
- return;
- }
-
-
- $subquery = db_select('taxonomy_index', 'tn');
- $subquery->addField('tn', 'nid');
- $where = db_or()->condition('tn.tid', $this->value, $operator);
- $last = "tn";
-
- if ($this->options['depth'] > 0) {
- $subquery->leftJoin('taxonomy_term_hierarchy', 'th', "th.tid = tn.tid");
- $last = "th";
- foreach (range(1, abs($this->options['depth'])) as $count) {
- $subquery->leftJoin('taxonomy_term_hierarchy', "th$count", "$last.parent = th$count.tid");
- $where->condition("th$count.tid", $this->value, $operator);
- $last = "th$count";
- }
- }
- elseif ($this->options['depth'] < 0) {
- foreach (range(1, abs($this->options['depth'])) as $count) {
- $subquery->leftJoin('taxonomy_term_hierarchy', "th$count", "$last.tid = th$count.parent");
- $where->condition("th$count.tid", $this->value, $operator);
- $last = "th$count";
- }
- }
-
- $subquery->condition($where);
- $this->query->add_where($this->options['group'], "$this->table_alias.$this->real_field", $subquery, 'IN');
- }
- }