3 namespace Drupal\form_test\Form;
5 use Drupal\Core\Form\FormBase;
6 use Drupal\Core\Form\FormStateInterface;
9 * Builds a simple form to test the #group property on #type 'vertical_tabs'.
11 class FormTestGroupVerticalTabsForm extends FormBase {
16 public function getFormId() {
17 return 'form_test_group_vertical_tabs';
23 public function buildForm(array $form, FormStateInterface $form_state) {
24 $form['vertical_tabs'] = [
25 '#type' => 'vertical_tabs',
29 '#title' => 'First group element',
30 '#group' => 'vertical_tabs',
32 $form['meta']['element'] = [
33 '#type' => 'textfield',
34 '#title' => 'First nested element in details element',
38 '#title' => 'Second group element',
39 '#group' => 'vertical_tabs',
41 $form['meta_2']['element_2'] = [
42 '#type' => 'textfield',
43 '#title' => 'Second nested element in details element',
51 public function submitForm(array &$form, FormStateInterface $form_state) {