function AjaxTestForm::buildForm

Overrides FormInterface::buildForm

File

core/modules/system/tests/modules/ajax_test/src/Form/AjaxTestForm.php, line 26

Class

AjaxTestForm

Dummy form for testing DialogRenderer with _form routes.

Namespace

Code

public function buildForm(array $form, FormStateInterface $form_state) {
    $form['#action'] = Url::fromRoute('ajax_test.dialog')->toString();
    $form['description'] = [
        '#markup' => '<p>' . $this->t("Ajax Form contents description.") . '</p>',
    ];
    $form['actions'] = [
        '#type' => 'actions',
    ];
    $form['actions']['submit'] = [
        '#type' => 'submit',
        '#value' => $this->t('Do it'),
    ];
    $form['actions']['preview'] = [
        '#type' => 'submit',
        '#value' => $this->t('Preview'),
        // No regular submit-handler. This form only works via JavaScript.
'#submit' => [],
        '#ajax' => [
            // This means the ::preview() method on this class would be invoked in
            // case of a click event. However, since Drupal core's test runner only
            // is able to execute PHP, not JS, there is no point in actually
            // implementing this method, because we can never let it be called from
            // JS; we'd have to manually call it from PHP, at which point we would
            // not actually be testing it.
            // Therefore we consciously choose to not implement this method, because
            // we cannot meaningfully test it anyway.
'callback' => '::preview',
            'event' => 'click',
        ],
    ];
    return $form;
}