Cache Valid Until The Next Day

Hey,

the Cache method of yii has the parameter cache time to set the cache e.g. 10 minutes valid. I want to set the cache valid until the next day (midnight).

Do you know if this feature is built-in yii? I could use CDbCacheDependency and do:




Yii::app()->cache->set($id, 0, new CDbCacheDependency('SELECT CURDATE();'));



Is this the way to go? Or is there a better way without using db?

My fist idea: create a new CacheDependency class, for example:




class CurrentDateCacheDependency extends CCacheDependency

{

        public $format;


        public function __construct($format=null)

        {

                $this->format=$format;

        }


        protected function generateDependentData()

        {

                if($this->format!==null)

                        return date($this->format);

                else

                        throw new CException(Yii::t('ext','CurrentDateCacheDependency.format cannot be empty.'));

        }

}



and




Yii::app()->cache->set($id,$value,0,new CurrentDateCacheDependency('Ymd'));