function contact_ajax_contact_site_form_ajax_callback in Contact ajax 8

Ajax callback for contact form.

Parameters

array $form: The form.

\Drupal\core\Form\FormStateInterface $form_state: The current state of the form.

Return value

\Drupal\core\Ajax\AjaxResponse The ajax response.

1 string reference to 'contact_ajax_contact_site_form_ajax_callback'

contact_ajax_form_contact_message_form_alter in ./contact_ajax.module

Implements hook_form_FORM_ID_alter() for contact_form_form().

File

./contact_ajax.module, line 232

Overrides core contact form functionality

Code

function contact_ajax_contact_site_form_ajax_callback($form, FormStateInterface &$form_state) {

  /** @var \Drupal\Core\Entity\ContentEntityForm $form_object */
  $form_object = $form_state
    ->getFormObject();

  /* @var \Drupal\contact\MessageInterface $contact_message */
  $contact_message = $form_object
    ->getEntity();
  $contact_form = ContactForm::load($contact_message
    ->bundle());
  $confirmation_type = $contact_form
    ->getThirdPartySetting('contact_ajax', 'confirmation_type', FALSE);
  $prefix_id = $contact_form
    ->getThirdPartySetting('contact_ajax', 'prefix_id', FALSE);
  $element_id = $prefix_id ? $prefix_id : CONTACT_AJAX_PREFIX . $form_object
    ->getFormId();

  // Used to display results of drupal_set_message() calls.
  $messages = StatusMessages::renderMessages(NULL);

  // Create AJAX Response object.
  $response = new AjaxResponse();
  $output = [
    '#type' => 'container',
    '#attributes' => [
      'id' => $element_id,
    ],
  ];

  // Remove prefix/suffix to avoid duplication.
  unset($form['#prefix'], $form['#suffix']);
  if (!$form_state
    ->getErrors()) {
    switch ($confirmation_type) {
      case CONTACT_AJAX_LOAD_FROM_URI:

        // load_from_uri is configured, so load the node content.
        $node_id = $contact_form
          ->getThirdPartySetting('contact_ajax', 'load_from_uri', FALSE);
        $node = Node::load($node_id);
        if ($node) {
          $view_builder = \Drupal::entityTypeManager()
            ->getViewBuilder('node');
          $renderarray = $view_builder
            ->view($node, 'full');
          $output['#markup'] = \Drupal::service('renderer')
            ->renderRoot($renderarray);
        }
        break;
      case CONTACT_AJAX_LOAD_FROM_MESSAGE:

        // Load the custom message from the config field.
        $confirmation_message = $contact_form
          ->getThirdPartySetting('contact_ajax', 'load_from_message', FALSE);
        $output['#markup'] = $confirmation_message ? $confirmation_message['value'] : '';
        break;
      case CONTACT_AJAX_LOAD_CLEAN_FORM:

        // Load the default status message and a clean form.
        $output[] = $messages;

        // Create a new contact message and set it as the form entity.
        $bundle_key = $contact_message
          ->getEntityType()
          ->getKey('bundle');
        $bundle = $contact_message
          ->bundle();
        $new_message = \Drupal::service('entity_type.manager')
          ->getStorage('contact_message')
          ->create([
          $bundle_key => $bundle,
        ]);
        $form_object
          ->setEntity($new_message);

        // Clear user input, skipping system items.
        $input = $form_state
          ->getUserInput();
        $keys = $form_state
          ->getCleanValueKeys();
        $keys[] = 'ajax_page_state';
        foreach ($input as $key => $item) {
          if (!in_array($key, $keys) && substr($key, 0, 1) !== '_') {
            unset($input[$key]);
          }
        }
        $form_state
          ->setUserInput($input);

        // Rebuild the form state values.
        $form_state
          ->setRebuild();
        $form_state
          ->setStorage([]);
        $form = \Drupal::service('form_builder')
          ->rebuildForm($form['#form_id'], $form_state);
        $output[] = $form;
        break;
      default:

        // CONTACT_AJAX_LOAD_DEFAULT_MESSAGE
        // Load the default status message only.
        $output[] = $messages;
    }
  }
  elseif ($form_state
    ->getErrors()) {
    $output[] = $messages;
    $output[] = $form;
  }
  $prefix = '#' . $element_id;
  $render_here = $contact_form
    ->getThirdPartySetting('contact_ajax', 'render_selector', FALSE);
  $render_selector = $render_here ? $render_here : $prefix;
  if ($render_selector != $prefix) {

    // If a custom selector is configured hide the form in its old position.
    $response
      ->addCommand(new ReplaceCommand($prefix, ''));
    $response
      ->addCommand(new HtmlCommand($render_selector, $output));
  }
  else {
    $response
      ->addCommand(new ReplaceCommand($render_selector, $output));
  }
  if (\Drupal::moduleHandler()
    ->moduleExists('views')) {
    $response
      ->addCommand(new ScrollTopCommand($render_selector));
  }
  return $response;
}