function index_action()
{
$this->questions = Question::findAll($this->cid);
if (Request::isXhr()) {
$this->render_json(array_map(function ($q) {
return $q->toJSON();
}, $this->questions));
} else {
$this->setupStudipNavigation();
$this->short_url = $this->generateShortURL();
# now render template implicitly
}
}
