public function PersistentLoginSettingsForm::validateForm in Persistent Login 8

Form validation handler.

Parameters

array $form: An associative array containing the structure of the form.

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

Overrides FormBase::validateForm

File

src/Form/PersistentLoginSettingsForm.php, line 77

Class

PersistentLoginSettingsForm

Form for editing Persistent Login module settings.

Namespace

Drupal\persistent_login\Form

Code

public function validateForm(array &$form, FormStateInterface $form_state) {
  if (!preg_match('/^[-_a-z0-9]+$/i', $form_state
    ->getValue('cookie_prefix'))) {
    $form_state
      ->setErrorByName('cookie_prefix', $this
      ->t('Invalid characters in cookie prefix'));
  }
  elseif (preg_match('/^S?SESS$/', $form_state
    ->getValue('cookie_prefix'))) {
    $form_state
      ->setErrorByName('cookie_prefix', $this
      ->t('Cookie prefix cannot be "SESS" because it is used by the Drupal session cookie.'));
  }
}