public function WebformSubmissionField::query in Webform Views Integration 8.5

Called to add the field to a query.

Overrides FieldPluginBase::query

File

src/Plugin/views/field/WebformSubmissionField.php, line 111

Class

WebformSubmissionField

Webform submission field.

Namespace

Drupal\webform_views\Plugin\views\field

Code

public function query() {
  parent::query();

  // Webform submission might have multiple values stored for the webform
  // element we are operating on. Let's make sure we are not introducing
  // duplicate rows in the resultset by enforcing just the first delta.
  if (!empty($this->query
    ->getTableInfo($this->tableAlias)['join']->extra)) {
    $this->query
      ->getTableInfo($this->tableAlias)['join']->extra[] = [
      'field' => 'delta',
      'value' => 0,
    ];
  }
}