I have a custom form that submits via AJAX. On form error, i simply return the whole form on my callback function, and the HTML is replaced, but i want it to open a modal dialog on success. What is the best way to do this? This is what i’m currently doing (i don’t like this solution because i can’t clear the form values, among other things):
public function ajaxCallback(array &$form, FormStateInterface $form_state) { drupal_get_messages(); // Hide the status messages $form_state->setRebuild(TRUE); if ($errors = $form_state->getErrors()) { return $form; } else { $response = new AjaxResponse(); $title = 'Consectetur adipiscing elit'; $text = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.'; $response->addCommand(new OpenModalDialogCommand($title, $text)); return $response; } } 
