public static function WebformElementComposite::valueCallback in Webform 6.x

Same name and namespace in other branches

1. 8.5 src/Element/WebformElementComposite.php \Drupal\webform\Element\WebformElementComposite::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/WebformElementComposite.php, line 57

Class

WebformElementComposite

Provides a element for the composite elements.

Namespace

Drupal\webform\Element

Code

public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
  if ($input === FALSE) {
    if (!isset($element['#default_value']) || !is_array($element['#default_value'])) {
      return [];
    }
    else {
      $default_value = [];
      foreach ($element['#default_value'] as $composite_key => $composite_element) {
        $composite_element = [
          'key' => $composite_key,
        ] + WebformArrayHelper::removePrefix($composite_element);

        // Get supported properties.
        $composite_properties = array_intersect_key($composite_element, static::$supportedProperties);

        // Move 'unsupported' properties to 'custom'.
        $custom_properties = array_diff_key($composite_element, static::$supportedProperties);
        $composite_properties['custom'] = $custom_properties ? WebformYaml::encode($custom_properties) : '';
        $default_value[] = $composite_properties;
      }
      $element['#default_value'] = $default_value;
      return $default_value;
    }
  }
  elseif (is_array($input)) {
    return $input;
  }
  else {
    return NULL;
  }
}