public static function AssociativeArrayWidget::addMorePairsAjax in Map Widget 8

Ajax callback for the "Add another item" button.

This returns the new page content to replace the page content made obsolete by the form submission.

File

src/Plugin/Field/FieldWidget/AssociativeArrayWidget.php, line 184

Class

AssociativeArrayWidget

Plugin implementation of the 'map_item_widget' widget.

Namespace

Drupal\map_widget\Plugin\Field\FieldWidget

Code

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

  // Go one level up in the form, and get this delta value.
  $element = NestedArray::getValue($form, array_slice($button['#array_parents'], 0, -1));

  // Add a DIV around this element.
  $element['#prefix'] = '<div class="ajax-new-content">' . (isset($element['#prefix']) ? $element['#prefix'] : '');
  $element['#suffix'] = (isset($element['#suffix']) ? $element['#suffix'] : '') . '</div>';
  return $element;
}