结算订单

1. 结算订单逻辑分析

结算订单是从Redis购物车中查询出被勾选的商品信息进行结算并展示。

2. 结算订单接口设计和定义

1.请求方式

3. 结算订单后端逻辑实现

class OrderSettlementView(LoginRequiredMixin, View):
    """结算订单"""

    def get(self, request):
        """提供订单结算页面"""
        # 获取登录用户
        user = request.user

        # 查询当前用户的所有地址信息
        addresses = Address.objects.filter(user=request.user, 
                                               is_deleted=False)

        # 从Redis购物车中查询出被勾选的商品信息
        redis_conn = get_redis_connection('carts')
        redis_cart = redis_conn.hgetall('carts_%s' % user.id)
        cart_selected = redis_conn.smembers('selected_%s' % user.id)
        cart = {}
        for sku_id in cart_selected:
            cart[int(sku_id)] = int(redis_cart[sku_id])

        # 查询商品信息
        sku_list = []
        # 查询商品信息
        skus = SKU.objects.filter(id__in=cart.keys())
        for sku in skus:
            sku_list.append({
                'id':sku.id,
                'name':sku.name,
                'default_image_url':sku.default_image.url,
                'count': cart[sku.id],
                'price':sku.price
            })

        # 补充运费
        freight = Decimal('10.00')

        addresses_list = []
        for address in addresses:
            addresses_list.append({
                'id':address.id,
                'province':address.province.name,
                'city':address.city.name,
                'district':address.district.name,
                'place':address.place,
                'receiver':address.receiver,
                'mobile':address.mobile
            })

        # 渲染界面
        context = {
            'addresses': addresses_list,
            'skus': sku_list,
            'freight': freight,
        }

        return http.JsonResponse({'code':0,
                                  'errmsg':'ok',
                                  'context':context})