public static function MultiValue::addMoreAjax in SAML Authentication 4.x

Same name and namespace in other branches

1. 8.3 src/Element/MultiValue.php \Drupal\samlauth\Element\MultiValue::addMoreAjax()

Ajax callback for the "Add another item" button.

Parameters

array $form: The build form.

\Drupal\Core\Form\FormStateInterface $form_state: The form state.

Return value

array|null The element.

See also

\Drupal\Core\Field\WidgetBase::addMoreAjax()

File

src/Element/MultiValue.php, line 394

Class

MultiValue

Provides a multi-value form element.

Namespace

Drupal\samlauth\Element

Code

public static function addMoreAjax(array $form, FormStateInterface $form_state) : ?array {
  $button = $form_state
    ->getTriggeringElement();

  // Go one level up in the form, to the widgets container.
  $element = NestedArray::getValue($form, array_slice($button['#array_parents'], 0, -1));

  // Ensure the widget allows adding additional items.
  if ($element['#cardinality'] != FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED) {
    return NULL;
  }

  // Adding until #1091852 gets solved.
  if (!empty($element['#description_suffix'])) {
    $element['#description'] .= ' ' . $element['#description_suffix'];
  }
  return $element;
}