+ /**
+ * Ajax callback triggered by date.
+ */
+ public function dateCallback($form, FormStateInterface $form_state) {
+ $response = new AjaxResponse();
+ $date = $form_state->getValue('date');
+ $response->addCommand(new HtmlCommand('#ajax_date_value', sprintf('<div>%s</div>', $date)));
+ $response->addCommand(new DataCommand('#ajax_date_value', 'form_state_value_date', $form_state->getValue('date')));
+ return $response;
+ }
+
+ /**
+ * Ajax callback triggered by datetime.
+ */
+ public function datetimeCallback($form, FormStateInterface $form_state) {
+ $datetime = $form_state->getValue('datetime')['date'] . ' ' . $form_state->getValue('datetime')['time'];
+
+ $response = new AjaxResponse();
+ $response->addCommand(new HtmlCommand('#ajax_datetime_value', sprintf('<div>%s</div>', $datetime)));
+ $response->addCommand(new DataCommand('#ajax_datetime_value', 'form_state_value_datetime', $datetime));
+ return $response;
+ }
+