function TaxonomyIndexTidDepth::query

Same name in other branches
  1. 9 core/modules/taxonomy/src/Plugin/views/filter/TaxonomyIndexTidDepth.php \Drupal\taxonomy\Plugin\views\filter\TaxonomyIndexTidDepth::query()
  2. 10 core/modules/taxonomy/src/Plugin/views/filter/TaxonomyIndexTidDepth.php \Drupal\taxonomy\Plugin\views\filter\TaxonomyIndexTidDepth::query()
  3. 11.x core/modules/taxonomy/src/Plugin/views/filter/TaxonomyIndexTidDepth.php \Drupal\taxonomy\Plugin\views\filter\TaxonomyIndexTidDepth::query()

Overrides InOperator::query

File

core/modules/taxonomy/src/Plugin/views/filter/TaxonomyIndexTidDepth.php, line 46

Class

TaxonomyIndexTidDepth
Filter handler for taxonomy terms with depth.

Namespace

Drupal\taxonomy\Plugin\views\filter

Code

public function query() {
    // If no filter values are present, then do nothing.
    if (count($this->value) == 0) {
        return;
    }
    elseif (count($this->value) == 1) {
        // Sometimes $this->value is an array with a single element so convert it.
        if (is_array($this->value)) {
            $this->value = current($this->value);
        }
        $operator = '=';
    }
    else {
        $operator = 'IN';
    }
    // The normal use of ensureMyTable() here breaks Views.
    // So instead we trick the filter into using the alias of the base table.
    //   See https://www.drupal.org/node/271833.
    // If a relationship is set, we must use the alias it provides.
    if (!empty($this->relationship)) {
        $this->tableAlias = $this->relationship;
    }
    else {
        $this->tableAlias = $this->query
            ->ensureTable($this->view->storage
            ->get('base_table'));
    }
    // Now build the subqueries.
    $subquery = Database::getConnection()->select('taxonomy_index', 'tn');
    $subquery->addField('tn', 'nid');
    $where = (new Condition('OR'))->condition('tn.tid', $this->value, $operator);
    $last = "tn";
    if ($this->options['depth'] > 0) {
        $subquery->leftJoin('taxonomy_term__parent', 'th', "th.entity_id = tn.tid");
        $last = "th";
        foreach (range(1, abs($this->options['depth'])) as $count) {
            $subquery->leftJoin('taxonomy_term__parent', "th{$count}", "{$last}.parent_target_id = th{$count}.entity_id");
            $where->condition("th{$count}.entity_id", $this->value, $operator);
            $last = "th{$count}";
        }
    }
    elseif ($this->options['depth'] < 0) {
        foreach (range(1, abs($this->options['depth'])) as $count) {
            $field = $count == 1 ? 'tid' : 'entity_id';
            $subquery->leftJoin('taxonomy_term__parent', "th{$count}", "{$last}.{$field} = th{$count}.parent_target_id");
            $where->condition("th{$count}.entity_id", $this->value, $operator);
            $last = "th{$count}";
        }
    }
    $subquery->condition($where);
    $this->query
        ->addWhere($this->options['group'], "{$this->tableAlias}.{$this->realField}", $subquery, 'IN');
}

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