public static function WebformCompositeBase::valueCallback in Webform 8.5

Same name and namespace in other branches

1. 6.x src/Element/WebformCompositeBase.php \Drupal\webform\Element\WebformCompositeBase::valueCallback()

Determines how user input is mapped to an element's #value property.

Parameters

array $element: An associative array containing the properties of the element.

mixed $input: The incoming input to populate the form element. If this is FALSE, the element's default value should be returned.

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

Return value

mixed The value to assign to the element.

Overrides FormElement::valueCallback

File

src/Element/WebformCompositeBase.php, line 42

Class

WebformCompositeBase

Provides an base composite webform element.

Namespace

Drupal\webform\Element

Code

public static function valueCallback(&$element, $input, FormStateInterface $form_state) {

  /** @var \Drupal\webform\Plugin\WebformElementManagerInterface $element_manager */
  $element_manager = \Drupal::service('plugin.manager.webform.element');
  $composite_elements = static::getCompositeElements($element);
  $composite_elements = WebformElementHelper::getFlattened($composite_elements);

  // Get default value for inputs.
  $default_value = [];
  foreach ($composite_elements as $composite_key => $composite_element) {
    $element_plugin = $element_manager
      ->getElementInstance($composite_element);
    if ($element_plugin
      ->isInput($composite_element)) {
      $default_value[$composite_key] = '';
    }
  }
  if ($input === FALSE) {
    if (empty($element['#default_value']) || !is_array($element['#default_value'])) {
      $element['#default_value'] = [];
    }
    return $element['#default_value'] + $default_value;
  }
  return is_array($input) ? $input + $default_value : $default_value;
}