function readonly_field_widget_form_alter in Read-only Field Widget 8

Implements hook_form_alter().

File

./readonly_field_widget.module, line 30

Contains readonly_field_widget.module..

Code

function readonly_field_widget_form_alter(&$form, FormStateInterface $form_state, $form_id) {

  // Check that this is an entity form.
  $form_object = $form_state
    ->getFormObject();
  if ($form_object instanceof EntityFormInterface) {
    $entity = $form_object
      ->getEntity();

    // Set access to readonly widget items based on their view access.
    $storage = $form_state
      ->getStorage();
    if ($entity instanceof FieldableEntityInterface && isset($storage['form_display'])) {

      /** @var \Drupal\Core\Entity\Display\EntityFormDisplayInterface $form_display */
      $form_display = $storage['form_display'];
    }
    else {
      return;
    }
    foreach ($form_display
      ->getComponents() as $name => $options) {
      $widget = $form_display
        ->getRenderer($name);
      if ($widget instanceof ReadonlyFieldWidget) {
        $items = $entity
          ->get($name);
        $items
          ->filterEmptyItems();
        $form[$name]['#access'] = $items
          ->access('view');
      }
    }
  }
}