Django实战-生鲜电商-订单评论

小团子

发布于 2019-07-18 08:07:25

51800

代码可运行

文章被收录于专栏：数据云团数据云团

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代码可运行

经过几轮的视图类的编写，整个电商项目的逻辑有清晰一点了么？对于事务逻辑的数据处理，分为查询和创建。相对于本项目来说，创建的操作大多数在用户下单到支付成功这一过程，所以在提交订单的类中，用到了数据库事务，对数据的一致性处理提供了保障。

① 提供评论页面

查询到支付成功的订单，通过反向查询找到所有商品。

    def get(self, request, order_id):
        """提供评论页面"""
        user = request.user
        try:
            order = OrderInfo.objects.get(order_id=order_id, user=user)
        except OrderInfo.DoesNotExist:
            return redirect(reverse("orders:info"))

        order.status_name = OrderInfo.ORDER_STATUS[order.status]
        order.skus = []
        order_skus = order.ordergoods_set.all()
        for order_sku in order_skus:
            sku = order_sku.sku
            sku.count = order_sku.count
            sku.amount = sku.price * sku.count
            order.skus.append(sku)

        return render(request, "order_comment.html", {"order": order})

② 处理评论内容

    def post(self, request, order_id):
        """处理评论内容"""
        user = request.user
        try:
            order = OrderInfo.objects.get(order_id=order_id, user=user)
        except OrderInfo.DoesNotExist:
            return redirect(reverse("orders:info"))

        # 获取评论条数
        total_count = request.POST.get("total_count")
        total_count = int(total_count)

        for i in range(1, total_count + 1):
            sku_id = request.POST.get("sku_%d" % i)
            content = request.POST.get('content_%d' % i, '')
            try:
                order_goods = OrderGoods.objects.get(order=order, sku_id=sku_id)
            except OrderGoods.DoesNotExist:
                continue

            order_goods.comment = content
            order_goods.save()

            # 清除商品详情缓存
            cache.delete("detail_%s" % sku_id)

        order.status = OrderInfo.ORDER_STATUS_ENUM["FINISHED"]
        order.save()

        return redirect(reverse("orders:info", kwargs={"page": 1}))

③ 订单评论类视图

class CommentView(LoginRequiredMixin, View):
    """订单评论"""
    def get(self, request, order_id):
        """提供评论页面"""
        user = request.user
        try:
            order = OrderInfo.objects.get(order_id=order_id, user=user)
        except OrderInfo.DoesNotExist:
            return redirect(reverse("orders:info"))

        order.status_name = OrderInfo.ORDER_STATUS[order.status]
        order.skus = []
        order_skus = order.ordergoods_set.all()
        for order_sku in order_skus:
            sku = order_sku.sku
            sku.count = order_sku.count
            sku.amount = sku.price * sku.count
            order.skus.append(sku)

        return render(request, "order_comment.html", {"order": order})

    def post(self, request, order_id):
        """处理评论内容"""
        user = request.user
        try:
            order = OrderInfo.objects.get(order_id=order_id, user=user)
        except OrderInfo.DoesNotExist:
            return redirect(reverse("orders:info"))

        # 获取评论条数
        total_count = request.POST.get("total_count")
        total_count = int(total_count)

        for i in range(1, total_count + 1):
            sku_id = request.POST.get("sku_%d" % i)
            content = request.POST.get('content_%d' % i, '')
            try:
                order_goods = OrderGoods.objects.get(order=order, sku_id=sku_id)
            except OrderGoods.DoesNotExist:
                continue

            order_goods.comment = content
            order_goods.save()

            # 清除商品详情缓存
            cache.delete("detail_%s" % sku_id)

        order.status = OrderInfo.ORDER_STATUS_ENUM["FINISHED"]
        order.save()

        return redirect(reverse("orders:info", kwargs={"page": 1}))