public static function CshsElement::valueCallback in Client-side Hierarchical Select 8.2

Same name and namespace in other branches

1. 8.3 src/Element/CshsElement.php \Drupal\cshs\Element\CshsElement::valueCallback()
2. 8 src/Element/CshsElement.php \Drupal\cshs\Element\CshsElement::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 Select::valueCallback

File

src/Element/CshsElement.php, line 71

Class

CshsElement

Defines the CSHS element.

Namespace

Drupal\cshs\Element

Code

public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
  return FALSE !== $input && NULL !== $input ? $input : NULL;
}