public function getDbConnection()
{
if (self::$login != null) {
return self::$login;
} else {
self::$login = Yii::app()->login;
if (self::$login instanceof CDbConection) {
self::$login->setActive(true);
return self::$login;
} else {
throw new CDbException(Yii::t('yii', 'Active Record requires a "login" CDbConnection application component.'));
}
}
}
