function Tableselect::valueCallback

Overrides Table::valueCallback

File

core/lib/Drupal/Core/Render/Element/Tableselect.php, line 84

Class

Tableselect

Provides a form element for a table with radios or checkboxes in left column.

Namespace

Code

public static function valueCallback(&$element, $input, FormStateInterface $form_state) {
  // If $element['#multiple'] == FALSE, then radio buttons are displayed and
  // the default value handling is used.
  if (isset($element['#multiple']) && $element['#multiple']) {
    // Checkboxes are being displayed with the default value coming from the
    // keys of the #default_value property. This differs from the checkboxes
    // element which uses the array values.
    if ($input === FALSE) {
      $value = [];
      $element += [
        '#default_value' => [],
      ];
      foreach ($element['#default_value'] as $key => $flag) {
        if ($flag) {
          $value[$key] = $key;
        }
      }
      return $value;
    }
    else {
      return is_array($input) ? array_combine($input, $input) : [];
    }
  }
}