public function beforeSave($insert)
 {
     if (parent::beforeSave($insert)) {
         //			$this->start = DDateTimeHelper::DateToUnix($this->date_from, $this->time_from);
         //			$this->end = DDateTimeHelper::DateToUnix($this->date_to, $this->time_to);
         //echo'<pre>';print_r($this);echo'</pre>';die;
         return true;
     } else {
         return false;
     }
 }