public function FormTestClickedButtonForm::validateForm

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

core/modules/system/tests/modules/form_test/src/Form/FormTestClickedButtonForm.php, line 84

Class

FormTestClickedButtonForm

Form builder to test button click detection.

Namespace

Code

public function validateForm(array &$form, FormStateInterface $form_state) {
  if ($triggering_element = $form_state
    ->getTriggeringElement()) {
    $this
      ->messenger()
      ->addStatus(t('The clicked button is %name.', [
      '%name' => $triggering_element['#name'],
    ]));
  }
  else {
    $this
      ->messenger()
      ->addStatus('There is no clicked button.');
  }
}