private function validateYoutube($fieldName)
{
$fieldData = $this->fields[$fieldName];
$required = $fieldData['required'] === true ? true : false;
$missingError = isset($fieldData['options']['missingError']) ? $fieldData['options']['missingError'] : "missingError for field {$fieldName} not defined";
$invalidError = isset($fieldData['options']['invalidError']) ? $fieldData['options']['invalidError'] : "invalidError for field {$fieldName} not defined";
$value = isset($this->rsc[$fieldName]) ? trim($this->rsc[$fieldName]) : '';
if ($required === true && $value == '') {
$this->addError($fieldName, $missingError);
}
if ($value != '') {
$request = new RestRequest("http://gdata.youtube.com/feeds/api/videos/{$value}");
$request->stdRequest(array(), array('Accept: text/xml'));
$responseInfo = $request->getResponseInfo();
if (!isset($responseInfo['http_code']) || $responseInfo['http_code'] != '200') {
$this->addError($fieldName, $invalidError);
}
}
$this->setFieldValue($fieldName, $value);
}