/**
* Gets a specific formular.
*
* This formular will be created upon the first retrievement.
* If created, the formular gets passed the formular parameters set in this container.
*
* @see Container::getForm
*
* @param string $key
* @param bool $asInstance if false, the specification array is returned.
*
* @return Container|null|\Zend\Form\FormInterface|array
* @throws \UnexpectedValueException
*/
public function getForm($key, $asInstance = true)
{
$form = parent::getForm($key, $asInstance);
/*
* We must check here, if a lazy loaded top level form is an
* instance of Container.
*/
if ($asInstance && false === strpos($key, '.') && (!$form instanceof Container || !$form->getLabel())) {
throw new \UnexpectedValueException(sprintf('The registered form with key "%s" is not an instance of \\Core\\Form\\Container or does not have a label.', $key));
}
return $form;
}
