public function normalize()
{
$data = $this->get();
if (is_array($data)) {
$data = implode($this->separator, $data);
}
$data = trim($data, $this->separator);
if (get_magic_quotes_gpc()) {
$this->set(stripslashes($data));
} else {
$this->set($data);
}
return parent::normalize();
}