public function serializeFields($event)
{
foreach ($this->fields as $fielName) {
if ($this->owner->{$fielName}) {
if (is_array($this->owner->{$fielName})) {
$this->owner->{$fielName} = serialize($this->owner->{$fielName});
}
} else {
$this->owner->{$fielName} = "";
}
}
}