public function TempStore::processForm in AJAX Comments 8

Update the temp store values while rebuilding a form, when necessary.

Parameters

\Symfony\Component\HttpFoundation\Request $request: The request object.

array $form: A form array.

\Drupal\Core\Form\FormStateInterface $form_state: The form state object.

bool $is_validating: Indicates if this method has been called from a form validation function.

Throws

\Drupal\user\TempStoreException

File

src/TempStore.php, line 139

Class

TempStore

A service to help store and retrieve data to be used across HTTP requests.

Namespace

Drupal\ajax_comments

Code

public function processForm(Request $request, $form, FormStateInterface $form_state, $is_validating = FALSE) {
  $form_machine_name = $this->privateTempStore
    ->get('form_machine_name');
  $form_build_info = $form_state
    ->getBuildInfo();

  // If this form is being built through ajax, update the stored value
  // of form_html_id.
  if (Utility::isAjaxRequest($request)) {
    if ($is_validating) {
      $this
        ->setSelector('form_html_id', $form['form_html_id']['#value']);
      $this->privateTempStore
        ->set('form_machine_name', $form_build_info['form_id']);
    }
    elseif ($form_build_info['form_id'] === $form_machine_name) {
      $this
        ->setSelector('form_html_id', $form['form_html_id']['#value']);
    }
  }
}