Think/Model/AdvModel.php
protected function getFilterListFields(&$resultSet)
    {
        if (!empty($this->_filter)) {
            foreach ($resultSet as $key => $result) {
                $resultSet[$key] = $this->getFilterFields($result);
            }
        }

        return $resultSet;
    }
protected function getFilterListFields(&$resultSet)
    {
        if (!empty($this->_filter)) {
            foreach ($resultSet as $key => $result) {
                $resultSet[$key] = $this->getFilterFields($result);
            }
        }

        return $resultSet;
    }
@param $resultSet

@return mixed