/**
* 工厂方法
*/
public static function factory($modelName = null)
{
if (empty($modelName)) {
return CModel::getInstance();
}
if (!isset(self::$modelList[$modelName])) {
self::$modelList[$modelName] = new $modelName();
return self::$modelList[$modelName];
}
return self::$modelList[$modelName];
}
