public function secureFields(array $data)
    {
        $data = $this->_normalizeData($data);

        $fields = [];
        foreach ($this->_selects as $select) {
            if ($data[$select] === false || $data[$select] === null) {
                continue;
            }

            $fields[] = $data['name'] . '[' . $select . ']';
        }

        return $fields;
    }