public function search()
	{


		$criteria=new CDbCriteria;

		$criteria->compare('id',$this->id);
		$criteria->compare('title',$this->title,true);
		$criteria->compare('status',$this->status,true);
		$criteria->compare('create_time',$this->create_time,true);
		$criteria->compare('create_user_id',$this->create_user_id);
		$criteria->compare('provider_id',$this->provider_id);
		$criteria->compare('update_time',$this->update_time,true);
		$criteria->compare('pdf_path',$this->pdf_path,true);



        if(isset($_POST['Newsletter']['sortStatus'])){
            $criteria->compare('status',$this->sortStatus);

        }
		return new CActiveDataProvider($this, array(
			'criteria'=>$criteria,
		));
	}

	/**