function views_handler_argument_term_node_tid_depth::query

Set up the query for this argument.

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

Overrides views_handler_argument::query

File

core/modules/taxonomy/views/views_handler_argument_term_node_tid_depth.inc, line 89

Definition of views_handler_argument_term_node_tid_depth.

Class

views_handler_argument_term_node_tid_depth

Argument handler for taxonomy terms with depth.

Code

function query($group_by = FALSE) {
  $this->ensure_my_table();

  if (!empty($this->options['break_phrase'])) {
    $tids = new stdClass();
    $tids->value = $this->argument;
    $tids = views_break_phrase($this->argument, $tids);
    if ($tids->value == array(-1)) {
      return FALSE;
    }

    if (count($tids->value) > 1) {
      $operator = 'IN';
    }
    else {
      $operator = '=';
    }

    $tids = $tids->value;
  }
  else {
    $operator = "=";
    $tids = $this->argument;
  }
  // Now build the subqueries.
  $subquery = db_select('taxonomy_index', 'tn');
  $subquery->addField('tn', 'nid');
  $where = db_or()->condition('tn.tid', $tids, $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", $tids, $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", $tids, $operator);
      $last = "th$count";
    }
  }

  $subquery->condition($where);
  $this->query->add_where(0, "$this->table_alias.$this->real_field", $subquery, 'IN');
}