public function isValid($value, $context = null)
{
if (!empty($value)) {
$this->vat = $value;
$countryid = intval($context['country_id']);
if ($countryid == 0) {
$this->_error(self::ISNOTCOUNTRYID);
return false;
}
$country = Countries::find($context['country_id']);
if (!empty($country->code)) {
$this->countryCode = $country->code;
} else {
return false;
}
if (Countries::isITbyId($countryid)) {
if (!is_numeric($value) || strlen($value) != 11) {
$this->_error(self::INVALIDVAT);
return false;
}
} elseif (Countries::isUEbyId($countryid)) {
return $this->eu_check();
}
}
return true;
}