protected function FormValidator::determineLimitValidationErrors in Drupal 8

Same name and namespace in other branches

1. 9 core/lib/Drupal/Core/Form/FormValidator.php \Drupal\Core\Form\FormValidator::determineLimitValidationErrors()

Determines if validation errors should be limited.

Parameters

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

Return value

array|null

1 call to FormValidator::determineLimitValidationErrors()

FormValidator::doValidateForm in core/lib/Drupal/Core/Form/FormValidator.php

Performs validation on form elements.

File

core/lib/Drupal/Core/Form/FormValidator.php, line 379

Class

FormValidator

Provides validation of form submissions.

Namespace

Drupal\Core\Form

Code

protected function determineLimitValidationErrors(FormStateInterface &$form_state) {

  // While this element is being validated, it may be desired that some
  // calls to \Drupal\Core\Form\FormStateInterface::setErrorByName() be
  // suppressed and not result in a form error, so that a button that
  // implements low-risk functionality (such as "Previous" or "Add more") that
  // doesn't require all user input to be valid can still have its submit
  // handlers triggered. The triggering element's #limit_validation_errors
  // property contains the information for which errors are needed, and all
  // other errors are to be suppressed. The #limit_validation_errors property
  // is ignored if submit handlers will run, but the element doesn't have a
  // #submit property, because it's too large a security risk to have any
  // invalid user input when executing form-level submit handlers.
  $triggering_element = $form_state
    ->getTriggeringElement();
  if (isset($triggering_element['#limit_validation_errors']) && $triggering_element['#limit_validation_errors'] !== FALSE && !($form_state
    ->isSubmitted() && !isset($triggering_element['#submit']))) {
    return $triggering_element['#limit_validation_errors'];
  }
  elseif ($triggering_element && !isset($triggering_element['#limit_validation_errors']) && !$form_state
    ->isSubmitted()) {
    return [];
  }
  else {
    return NULL;
  }
}