public function search()
{
// Warning: Please modify the following code to remove attributes that
// should not be searched.
$criteria = new CDbCriteria();
$criteria->compare('product_special_id', $this->product_special_id);
$criteria->compare('product_id', $this->product_id);
$criteria->compare('customer_group_id', $this->customer_group_id);
$criteria->compare('priority', $this->priority);
$criteria->compare('price', $this->price, true);
$criteria->compare('date_start', $this->date_start, true);
$criteria->compare('date_end', $this->date_end, true);
return new CActiveDataProvider($this, array('criteria' => $criteria));
}