public function buildView(FormView $view, FormInterface $form, array $options)
{
$view->vars['clicked'] = $form->isClicked();
}
/**
* Extracts a clicked button from a form tree, if one exists.
*
* @param FormInterface $form The root form.
*
* @return ClickableInterface|null The clicked button or null.
*/
private static function findClickedButton(FormInterface $form)
{
if ($form instanceof ClickableInterface && $form->isClicked()) {
return $form;
}
foreach ($form as $child) {
if (null !== ($button = self::findClickedButton($child))) {
return $button;
}
}
return null;
}
