public static function TermReferenceFancytree::valueCallback in Term Reference Fancytree 8

Same name and namespace in other branches

1. 8.2 src/Element/TermReferenceFancytree.php \Drupal\term_reference_fancytree\Element\TermReferenceFancytree::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/TermReferenceFancytree.php, line 138

Class

TermReferenceFancytree

Term Reference Tree Form Element.

Namespace

Drupal\term_reference_fancytree\Element

Code

public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
  $selected_terms = [];

  // Ensure our input is not empty and loop through the input values for
  // submission.
  // @Todo check if we need this.
  if (is_array($input) && !empty($input)) {
    foreach ($input as $tid) {
      $term = \Drupal::entityTypeManager()
        ->getStorage('taxonomy_term')
        ->load($tid);
      if ($term) {
        $selected_terms[] = $tid;
      }
    }
  }
  return $selected_terms;
}