public function checkErrors()
{
if ($this->model->hasErrors()) {
$msg = array();
foreach ($this->model->getErrors() as $attribute => $errors) {
$msg = array_merge($msg, $errors);
}
//todo: show several messages. should be checked in x-editable js
//$this->error(join("\n", $msg));
$this->error($msg[0]);
}
}