/**
* Creates a criteria that can be used to return related records
*
* @param ActiveRecord $finder the finder model
*
* @return \CDbCriteria the criteria object
* @throws \CHttpException if unknown embedded parameters are specified
*/
protected function createEmbedCriteria(ActiveRecord $finder)
{
$criteria = new \CDbCriteria();
$criteria->with = array();
$params = $this->getParams();
if (isset($params['_embed'])) {
$embedNames = preg_split("/\\s*,\\s*/", $params['_embed']);
$links = $finder->links();
foreach ($embedNames as $name) {
if (($pos = strpos($name, '.')) !== false) {
$first = substr($name, 0, $pos);
} else {
$first = $name;
}
if (!isset($links[$first])) {
throw new \CHttpException(400, \Yii::t('resource', "Invalid request, unknown {name} parameter.", array('{name}' => $name)));
}
if ($name != 'stats') {
$criteria->with[] = $name;
}
}
if (count($embedNames)) {
$criteria->together = true;
}
}
return $criteria;
}
