public function IndexTidDepthModifier::preQuery in Drupal 8

Same name and namespace in other branches

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

Run before the view is built.

This gives all the handlers some time to set up before any handler has been fully run.

Overrides HandlerBase::preQuery

File

core/modules/taxonomy/src/Plugin/views/argument/IndexTidDepthModifier.php, line 24

Class

IndexTidDepthModifier

Argument handler for to modify depth for a previous term.

Namespace

Drupal\taxonomy\Plugin\views\argument

Code

public function preQuery() {

  // We don't know our argument yet, but it's based upon our position:
  $argument = isset($this->view->args[$this->position]) ? $this->view->args[$this->position] : NULL;
  if (!is_numeric($argument)) {
    return;
  }
  if ($argument > 10) {
    $argument = 10;
  }
  if ($argument < -10) {
    $argument = -10;
  }

  // figure out which argument preceded us.
  $keys = array_reverse(array_keys($this->view->argument));
  $skip = TRUE;
  foreach ($keys as $key) {
    if ($key == $this->options['id']) {
      $skip = FALSE;
      continue;
    }
    if ($skip) {
      continue;
    }
    if (empty($this->view->argument[$key])) {
      continue;
    }
    if (isset($handler)) {
      unset($handler);
    }
    $handler =& $this->view->argument[$key];
    if (empty($handler->definition['accept depth modifier'])) {
      continue;
    }

    // Finally!
    $handler->options['depth'] = $argument;
  }
}