public function search()
{
// Warning: Please modify the following code to remove attributes that
// should not be searched.
$criteria = new CDbCriteria();
$criteria->compare('option_value_id', $this->option_value_id);
$criteria->compare('option_id', $this->option_id);
$criteria->compare('image', $this->image, true);
$criteria->compare('sort_order', $this->sort_order);
return new CActiveDataProvider($this, array('criteria' => $criteria));
}