修改地址前后端逻辑

1. 修改地址接口设计和定义

1.请求方式

2.请求参数：路径参数 和 JSON

3.响应结果：JSON

2. 修改地址后端逻辑实现

提示

• 删除地址后端逻辑和新增地址后端逻辑非常的相似。
• 都是更新用户地址模型类，需要保存用户地址信息。

class UpdateDestroyAddressView(LoginRequiredJSONMixin, View):
    """修改和删除地址"""

    def put(self, request, address_id):
        """修改地址"""
        # 接收参数
        json_dict = json.loads(request.body.decode())
        receiver = json_dict.get('receiver')
        province_id = json_dict.get('province_id')
        city_id = json_dict.get('city_id')
        district_id = json_dict.get('district_id')
        place = json_dict.get('place')
        mobile = json_dict.get('mobile')
        tel = json_dict.get('tel')
        email = json_dict.get('email')

        # 校验参数
        if not all([receiver, province_id, city_id, district_id, place, mobile]):
            return http.HttpResponseForbidden('缺少必传参数')
        if not re.match(r'^1[3-9]\d{9}$', mobile):
            return http.HttpResponseForbidden('参数mobile有误')
        if tel:
            if not re.match(r'^(0[0-9]{2,3}-)?([2-9][0-9]{6,7})+(-[0-9]{1,4})?$', tel):
                return http.HttpResponseForbidden('参数tel有误')
        if email:
            if not re.match(r'^[a-z0-9][\w\.\-]*@[a-z0-9\-]+(\.[a-z]{2,5}){1,2}$', email):
                return http.HttpResponseForbidden('参数email有误')

        # 判断地址是否存在,并更新地址信息
        try:
            Address.objects.filter(id=address_id).update(
                user = request.user,
                title = receiver,
                receiver = receiver,
                province_id = province_id,
                city_id = city_id,
                district_id = district_id,
                place = place,
                mobile = mobile,
                tel = tel,
                email = email
            )
        except Exception as e:
            logger.error(e)
            return http.JsonResponse({'code': RETCODE.DBERR, 'errmsg': '更新地址失败'})

        # 构造响应数据
        address = Address.objects.get(id=address_id)
        address_dict = {
            "id": address.id,
            "title": address.title,
            "receiver": address.receiver,
            "province": address.province.name,
            "city": address.city.name,
            "district": address.district.name,
            "place": address.place,
            "mobile": address.mobile,
            "tel": address.tel,
            "email": address.email
        }

        # 响应更新地址结果
        return http.JsonResponse({'code': RETCODE.OK, 'errmsg': '更新地址成功', 'address': address_dict})

3. 修改地址前端逻辑实现

1.添加修改地址的标记

• 新增地址和修改地址的交互不同。
• 为了区分用户是新增地址还是修改地址，我们可以选择添加一个变量，作为标记。
• 为了方便得到正在修改的地址信息，我们可以选择展示地址时对应的序号作为标记。

data: {
    editing_address_index: '', 
},

2.实现编辑按钮对应的事件

show_edit_site(index){
    this.is_show_edit = true;
    this.clear_all_errors();
    this.editing_address_index = index.toString();
},

<div class="down_btn">
    <a v-if="address.id!=default_address_id">设为默认a>
    <a href="javascript:;" class="edit_icon">编辑a>
div>

3.展示要重新编辑的数据

show_edit_site(index){
    this.is_show_edit = true;
    this.clear_all_errors();
    this.editing_address_index = index.toString();
    // 只获取要编辑的数据
    this.form_address = JSON.parse(JSON.stringify(this.addresses[index]));
},

4.发送修改地址请求

• 重要提示：
  • 0 == '' 返回true
  • 0 === '' 返回false
  • 为了避免第0个索引出错，我们选择this.editing_address_index === ''的方式进行判断

if (this.editing_address_index === '') {
    // 新增地址
    ......
} else {
    // 修改地址
    let url = '/addresses/' + this.addresses[this.editing_address_index].id + '/';
    axios.put(url, this.form_address, {
        headers: {
            'X-CSRFToken':getCookie('csrftoken')
        },
        responseType: 'json'
    })
        .then(response => {
            if (response.data.code == '0') {
                this.addresses[this.editing_address_index] = response.data.address;
                this.is_show_edit = false;
            } else if (response.data.code == '4101') {
                location.href = '/login/?next=/addresses/';
            } else {
                alert(response.data.errmsg);
            }
        })
        .catch(error => {
            alert(error.response);
        })
}