public function getList($prodict_id)
    {
        $result = null;
        $this->hook->attach('product.field.list.before', $prodict_id, $result, $this);

        if (isset($result)) {
            return $result;
        }

        $sql = 'SELECT * FROM product_field WHERE product_id=?';
        $fields = $this->db->fetchAll($sql, array($prodict_id));

        $result = array();
        foreach ($fields as $field) {
            $result[$field['type']][$field['field_id']][] = $field['field_value_id'];
        }

        $this->hook->attach('product.field.list.after', $prodict_id, $result, $this);
        return $result;
    }