public function WebformHandlerFormBase::validateMachineName in Webform 6.x

Validates the machine name for a webform handler instance.

This method verifies the uniqueness of the machine name and updates the machine name with a count suffix if another handler with the same machine name already exists.

See also

\Drupal\Core\Render\Element\MachineName::validateMachineName()

File

src/Form/WebformHandlerFormBase.php, line 344

Class

WebformHandlerFormBase

Provides a base webform for webform handlers.

Namespace

Drupal\webform\Form

Code

public function validateMachineName(&$element, FormStateInterface $form_state, &$complete_form) {

  // If the machine name matches the default machine name, it does not need to
  // be validated (i.e. during handler edit form save).
  if (isset($element['#default_value']) && $element['#default_value'] === $element['#value']) {
    return;
  }
  $count = 1;
  $machine_name = $element['#value'];
  $instance_ids = $this->webform
    ->getHandlers()
    ->getInstanceIds();
  while (isset($instance_ids[$machine_name])) {
    $machine_name = $element['#value'] . '_' . $count++;
  }
  $element['#value'] = $machine_name;
  $form_state
    ->setValueForElement($element, $machine_name);
}