public function IndexTidDepth::query in Drupal 8

Same name and namespace in other branches

1. 9 core/modules/taxonomy/src/Plugin/views/argument/IndexTidDepth.php \Drupal\taxonomy\Plugin\views\argument\IndexTidDepth::query()
2. 10 core/modules/taxonomy/src/Plugin/views/argument/IndexTidDepth.php \Drupal\taxonomy\Plugin\views\argument\IndexTidDepth::query()

Set up the query for this argument.

The argument sent may be found at $this->argument.

Overrides ArgumentPluginBase::query

File

core/modules/taxonomy/src/Plugin/views/argument/IndexTidDepth.php, line 97

Class

IndexTidDepth

Argument handler for taxonomy terms with depth.

Namespace

Drupal\taxonomy\Plugin\views\argument

Code

public function query($group_by = FALSE) {
  $this
    ->ensureMyTable();
  if (!empty($this->options['break_phrase'])) {
    $break = static::breakString($this->argument);
    if ($break->value === [
      -1,
    ]) {
      return FALSE;
    }
    $operator = count($break->value) > 1 ? 'IN' : '=';
    $tids = $break->value;
  }
  else {
    $operator = "=";
    $tids = $this->argument;
  }

  // Now build the subqueries.
  $subquery = Database::getConnection()
    ->select('taxonomy_index', 'tn');
  $subquery
    ->addField('tn', 'nid');
  $where = (new Condition('OR'))
    ->condition('tn.tid', $tids, $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", $tids, $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", $tids, $operator);
      $last = "th{$count}";
    }
  }
  $subquery
    ->condition($where);
  $this->query
    ->addWhere(0, "{$this->tableAlias}.{$this->realField}", $subquery, 'IN');
}