def post(self,request):
data_dict = json.loads(request.body.decode())
house_id = data_dict.get('house_id')
start_date = data_dict.get('start_date')
end_date = data_dict.get('end_date')
user = request.user
#判断完整
if not all([house_id,start_date,end_date]):
return JsonResponse({'errno': 400, 'errmsg': '缺少必传参数'})
#是否存在
try:
house = House.objects.get(id=house_id)
except Exception as e:
return JsonResponse({"errno": 400, "errmsg": "房屋不存在"})
#是否房主
if user.id == house.user.id:
return JsonResponse({"errno": 400, "errmsg": "是房主无法预定"})
#跳转页面
#判断是否传入错误数据
try:
d1 = datetime.datetime.strptime(start_date, '%Y-%m-%d')
d2 = datetime.datetime.strptime(end_date, '%Y-%m-%d')
assert d1 < d2, Exception('开始日期大于结束日期')
days = (d2 - d1).days
if days < 0:
return JsonResponse({'errno': 400, 'errmsg': '日期有误'})
except Exception as e:
return JsonResponse({'errno': 400, 'errmsg': '参数有误'})
#开启事务
# with transaction.atomic():
#
# save_id = transaction.savepoint()
# try:
amount = days * house.price
if days < house.min_days:
return JsonResponse({'errno': 400, 'errmsg': '住的时间太短'})
if days > house.max_days:
return JsonResponse({'errno': 400, 'errmsg': '住的时间太长'})
order = Order()
order.user_id = user.id
order.house_id = house.id
order.begin_date = d1
order.end_date = d2
order.days = days
order.amount = amount
order.house_price = house.price
order.status = Order.ORDER_STATUS['WAIT_ACCEPT']
order.save()
# order = Order.objects.create(user_id=user.id,
# house_id=house_id,
# begin_date=d1,
# end_date=d2,
# days=days,
# amount=amount,
# # # status=Order.ORDER_STATUS['PAID'],
# price=house.price,
# )
# 判断用户下单的时间段是否有别的订单
count = Order.objects.filter(house_id=house_id,
begin_date__lte=end_date,
end_date__gte=start_date).count()
if count > 0:
# 说明房子被别人预定
# transaction.savepoint_rollback(save_id)
return JsonResponse({'errno': 400, 'errmsg': '房子已被预定'})
# except Exception as e:
# transaction.savepoint_rollback(save_id)
# return JsonResponse({'errno': 400, 'errmsg': '下单失败'})
#提交事务
# transaction.savepoint_commit(save_id)
return JsonResponse({'errno': 0, 'errmsg': '添加订单成功', "data": {"order_id": order.pk}})
