public function MachineName::prepare in Webform 6.x

Same name and namespace in other branches

1. 8.5 src/Plugin/WebformElement/MachineName.php \Drupal\webform\Plugin\WebformElement\MachineName::prepare()

Prepare an element to be rendered within a webform.

Parameters

array $element: An element.

\Drupal\webform\WebformSubmissionInterface $webform_submission: A webform submission. Webform submission is optional since it is not used by composite sub elements.

Overrides WebformElementBase::prepare

See also

\Drupal\webform\Element\WebformCompositeBase::processWebformComposite

File

src/Plugin/WebformElement/MachineName.php, line 39

Class

MachineName

Provides a 'machine_name' element.

Namespace

Drupal\webform\Plugin\WebformElement

Code

public function prepare(array &$element, WebformSubmissionInterface $webform_submission = NULL) {
  parent::prepare($element, $webform_submission);

  // Since all elements are placed under the $form['elements'] we need to
  // prepend the 'element' container to the #machine_name source.
  if (isset($element['#machine_name']['source'])) {
    array_unshift($element['#machine_name']['source'], 'elements');
  }
  else {
    $element['#machine_name']['source'] = [
      'elements',
      'label',
    ];
  }

  // Set #exists callback to function that will always returns TRUE.
  // This will prevent error and arbitrary functions from being called.
  // @see \Drupal\Core\Render\Element\MachineName::validateMachineName.
  $element['#machine_name']['exists'] = [
    get_class($this),
    'exists',
  ];
}