3 namespace Drupal\ajax_forms_test\Form;
5 use Drupal\Core\Form\FormBase;
6 use Drupal\Core\Form\FormStateInterface;
9 * Form builder: Builds a form that triggers a simple AJAX callback.
11 class AjaxFormsTestValidationForm extends FormBase {
16 public function getFormId() {
17 return 'ajax_forms_test_validation_form';
23 public function buildForm(array $form, FormStateInterface $form_state) {
24 $form['drivertext'] = [
25 '#title' => $this->t('AJAX-enabled textfield.'),
26 '#description' => $this->t("When this one AJAX-triggers and the spare required field is empty, you should not get an error."),
27 '#type' => 'textfield',
28 '#default_value' => $form_state->getValue('drivertext', ''),
30 'callback' => 'ajax_forms_test_validation_form_callback',
31 'wrapper' => 'message_area',
32 'method' => 'replace',
34 '#suffix' => '<div id="message_area"></div>',
37 $form['drivernumber'] = [
38 '#title' => $this->t('AJAX-enabled number field.'),
39 '#description' => $this->t("When this one AJAX-triggers and the spare required field is empty, you should not get an error."),
41 '#default_value' => $form_state->getValue('drivernumber', ''),
43 'callback' => 'ajax_forms_test_validation_number_form_callback',
44 'wrapper' => 'message_area_number',
45 'method' => 'replace',
47 '#suffix' => '<div id="message_area_number"></div>',
50 $form['spare_required_field'] = [
51 '#title' => $this->t("Spare Required Field"),
52 '#type' => 'textfield',
58 '#value' => $this->t('Submit'),
67 public function submitForm(array &$form, FormStateInterface $form_state) {
68 drupal_set_message($this->t("Validation form submitted"));