def perform_create(self, serializer):
order = serializer.save() # 创建一笔订单
global order_sn
order_sn += 1
order.order_sn = '000000' + str(order_sn)
order.save()
print('----->', serializer.validated_data)
# 清空购物车
'''
goods_id user_id nums
1 5 2 ----->shopcart
6 5 5
9 5 1
[shopcart,shopcart,shopcart]
'''
shopcarts = ShoppingCart.objects.filter(user=self.request.user)
for shopcart in shopcarts:
orderGoods = OrderGoods()
orderGoods.goods_num = shopcart.nums
orderGoods.goods = shopcart.goods
orderGoods.order = order
orderGoods.save()
# delete
shopcart.delete()
def perform_create(self, serializer):
# 保存后会返回OrderInfo订单的实例对象
order_info = serializer.save()
# 查找当前用户下购物车所有的商品
shopping_carts = ShoppingCart.objects.filter(
user=self.request.user) # 列表
for shopping_cart in shopping_carts:
# 订单详情商品
order_goods = OrderGoods()
# 订单
order_goods.order = order_info
# 先要保存到OrderGoods,取出购物车的商品
goods = shopping_cart.goods
# 保存到订单对应的商品model
order_goods.goods = goods
# 订单商品详情的数量
order_goods.goods_num = shopping_cart.nums
# 保存OrderGoods
order_goods.save()
# 把购物车里面的所有的商品删除，在删除之前，
shopping_cart.delete()
def perform_create(self, serializer):
order = serializer.save()
shop_carts = ShoppingCart.objects.filter(user=self.request.user)
for shop_cart in shop_carts:
order_goods = OrderGoods()
order_goods.goods = shop_cart.goods
order_goods.goods_num = shop_cart.nums
order_goods.order = order
order_goods.save()
shop_cart.delete()
return order
def perform_create(self, serializer):
order = serializer.save() # 保存OrderInfo(订单)并返回
# 1.从购物车里的数据生成订单
shop_carts = ShoppingCart.objects.filter(user=self.request.user)
for shop_cart in shop_carts:
order_goods = OrderGoods()
order_goods.goods = shop_cart.goods
order_goods.goods_num = shop_cart.nums
order_goods.order = order # 删除的时候是级联删除
order_goods.save()
# 2.清空购物车
shop_cart.delete()
return order
def post(self, request):
""" post提交订单 """
# 接受参数
user = request.user
address_id = request.POST.get('params[address_id]')
address = UserAddress.objects.get(id=address_id, user=user)
pay_method = request.POST.get('params[pay_method]')
goods_id = request.POST.getlist('params[goods_id][]')
post_message = request.POST.get('params[post_message]', '')
nums = int(request.POST.get('params[nums]', '1'))
# 参数检验
if not all([address_id, pay_method, goods_id]):
return HttpResponse('{"status": "fail", "msg": "参数有错或购物车为空"}', content_type='application/json')
# 事务保存点
sid = transaction.savepoint()
order_info = OrderInfo()
order_info.user = user
order_info.signer = address.signer
order_info.signer_mobile = address.signer_mobile
order_info.address = address.address
order_info.order_sn = datetime.now().strftime("%Y%m%d%H%M%S") + str(user.id)
order_info.pay_method = pay_method
order_info.post_message = post_message
order_info.save()
order_mount = 0 # 总价格
for good_id in goods_id:
try: # 购物车里创建的订单
cart_good = ShoppingCart.objects.get(goods_id=good_id)
cart_good_nums = cart_good.nums
except: # 这个是 用户立即购买创建的订单
cart_good_nums = nums
good = Goods.objects.get(id=good_id)
if cart_good_nums > good.goods_num:
# 回滚事务
transaction.savepoint_rollback(sid)
return HttpResponse('{"status": "fail", "msg": "商品库存不足"}', content_type='application/json')
else:
order_good = OrderGoods()
order_good.goods = good
order_good.goods_num = cart_good_nums
order_good.order = order_info
order_good.save()
order_mount += good.shop_price * cart_good_nums
good.goods_num -= cart_good_nums # 减少库存
try:
cart_good.delete()
except:
pass
good.save()
# 订单信息
order_info.order_mount = order_mount
order_info.save()
return HttpResponse('{"status": "success", "msg": "订单创建成功"}', content_type='application/json')