protected function YamlFormEntityElementsValidator::validateRendering in YAML Form 8

Validate that elements are a valid render array.

Return value

\Drupal\Core\StringTranslation\TranslatableMarkup|string|null If not valid an error message.

See also

\Drupal\Core\Entity\EntityFormBuilder

\Drupal\yamlform\Entity\YamlForm::getSubmissionForm()

1 call to YamlFormEntityElementsValidator::validateRendering()

YamlFormEntityElementsValidator::validate in src/YamlFormEntityElementsValidator.php

Validate form elements.

File

src/YamlFormEntityElementsValidator.php, line 337

Class

YamlFormEntityElementsValidator

Defines a class to validate form elements.

Namespace

Drupal\yamlform

Code

protected function validateRendering() {
  set_error_handler('_yamlform_entity_element_validate_rendering_error_handler');
  try {

    /** @var \Drupal\Core\Entity\EntityTypeManagerInterface $entity_type_manager */
    $entity_type_manager = \Drupal::service('entity_type.manager');

    /** @var \Drupal\Core\Form\FormBuilderInterface $form_builder */
    $form_builder = \Drupal::service('form_builder');

    /** @var \Drupal\yamlform\YamlFormSubmissionInterface $yamlform_submission */
    $yamlform_submission = $entity_type_manager
      ->getStorage('yamlform_submission')
      ->create([
      'yamlform' => $this->yamlform,
    ]);
    $form_object = $entity_type_manager
      ->getFormObject('yamlform_submission', 'default');
    $form_object
      ->setEntity($yamlform_submission);
    $form_state = (new FormState())
      ->setFormState([]);
    $form_builder
      ->buildForm($form_object, $form_state);
    $message = NULL;
  } catch (\Exception $exception) {
    $message = $exception
      ->getMessage();
  }
  set_error_handler('_drupal_error_handler');
  if ($message) {
    $build = [
      'title' => [
        '#markup' => $this
          ->t('Unable to render elements, please view the below message(s) and the error log.'),
      ],
      'items' => [
        '#theme' => 'item_list',
        '#items' => [
          $message,
        ],
      ],
    ];
    return \Drupal::service('renderer')
      ->renderPlain($build);
  }
  return $message;
}