def post(self, request):
# 1. 接收参数
user_id = request.session.get("ID")
sku_id = request.POST.get("sku_id")
count = request.POST.get("count")
# a.判断为整数
try:
sku_id = int(sku_id)
count = int(count)
except:
return JsonResponse(json_msg(1, "参数错误!"))
# b.要在数据库中存在商品
try:
goods_sku = GoodsSKU.objects.get(pk=sku_id)
except GoodsSKU.DoesNotExist:
return JsonResponse(json_msg(2, "商品不存在!"))
# 判断库存
if goods_sku.stock < count:
return JsonResponse(json_msg(3, "库存不足!"))
# 2. 操作数据
# 创建连接
r = get_redis_connection()
# 处理购物车的 key
cart_key = get_cart_key(user_id)
# 添加
# 获取购物车中已经存在的数量 加 上 需要添加 与 库存进行比较
old_count = r.hget(cart_key, sku_id) # 二进制
if old_count is None:
old_count = 0
else:
old_count = int(old_count)
if goods_sku.stock < old_count + count:
return JsonResponse(json_msg(3, "库存不足!"))
# 将商品添加到购物车
# r.hset(cart_key,sku_id,old_count + count)
# ctrl + shift + u
rs_count = r.hincrby(cart_key, sku_id, count)
if rs_count <= 0:
# 删除field
r.hdel(cart_key, sku_id)
# 获取购物车中的总数量
cart_count = get_cart_count(request)
# 3. 合成响应
return JsonResponse(json_msg(0, "添加购物车成功", data=cart_count))
def post(self, request):
# 接收数据
data = request.POST.dict() # 强制转换成字典
# 字典保存用户
data['user_id'] = request.session.get("ID")
# 表单验证数据合法性
form = AddressModelForm(data)
if form.is_valid():
form.instance.user_id = SpUser.objects.get(pk=data['user_id'])
form.save()
# return redirect('user:收货地址列表')
return JsonResponse(json_msg(0, '添加成功'))
else:
context = {'form': form}
# return render(request, 'user/address.html', context=context)
return JsonResponse(json_msg(1, "添加失败", data=form.errors))
def post(self, request):
# 接受参数
user_id = request.session.get('ID')
sku_id = request.POST.get('sku_id')
count = request.POST.get('count')
# 判断id和数量是否为整数
try:
sku_id = int(sku_id)
count = int(count)
except:
return JsonResponse(json_msg(1, '参数错误'))
# 要在数据库中存在商品
try:
shop_sku = ShopSKU.objects.get(pk=sku_id)
except ShopSKU.DoesNotExist:
return JsonResponse(json_msg(2, '商品不存在'))
# 判断库存
if shop_sku.stock < count:
return JsonResponse(json_msg(3, '库存不足'))
# 操作数据库
r = get_redis_connection()
# 处理key
cart_key = f'cart_{user_id}'
# 获取购物车中的数量加上需要的数量与库存作比较
# 是二进制
old_count = r.hget(cart_key, sku_id)
if old_count is None:
old_count = 0
else:
old_count = int(old_count)
if shop_sku.stock < old_count + count:
return JsonResponse(json_msg(3, '库存不足'))
# 添加购物车
r.hincrby(cart_key, sku_id, count)
# 获取购物车中的总数量
cart_count = get_cart_count(request)
return JsonResponse(json_msg(0, '添加购物车成功', data=cart_count))
def verify_login(request, *args, **kwargs):
# 验证session中是否有登录标识
if request.session.get("ID") is None:
referer = request.META.get('HTTP_REFERER', None)
if referer:
request.session['referer'] = referer
if request.is_ajax():
return JsonResponse(json_msg(1, '未登录'))
else:
# 跳转到登录
return redirect('user:登录')
else:
# 调用原函数
return func(request, *args, **kwargs)
def verify_login(request, *args, **kwargs):
# 判断是否登录
# 根据session里面的id 判断
if request.session.get('ID') is None:
# 将上个请求地址保存到session
referer = request.META.get('HTTP_REFERER', None)
if referer:
request.session['referer'] = referer
# 判断 是否为ajax请求
if request.is_ajax():
return JsonResponse(json_msg(1, '未登录'))
# 跳转到登录
return redirect('用户:用户登录')
else:
# 调用原函数
return func(request, *args, **kwargs)
def post(self,reqeust):
"""
保存订单数据
1. 订单基本信息表 和 订单商品表
"""
# 1. 接收参数
transport_id = request.POST.get('transport')
sku_ids = request.POST.getlist('sku_ids')
address_id = request.POST.get('address')
# 接收用户的id
user_id = request.session.get("ID")
user = User.objects.get(pk=user_id)
# 验证数据的合法性
try:
transport_id = int(transport_id)
address_id = int(address_id)
sku_ids = [int(i) for i in sku_ids]
except:
return JsonResponse(json_msg(2, "参数错误"))
# 验证收货地址和运输方式存在
try:
address = UserAddress.objects.get(pk=address_id)
except UserAddress.DoesNotExist:
return JsonResponse(json_msg(3, "收货地址不存在!"))
try:
transport = Transport.objects.get(pk=transport_id)
except Transport.DoesNotExist:
return JsonResponse(json_msg(4, "运输方式不存在!"))
# 2. 操作数据
# >>>1 . 操作订单基本信息表
order_sn = "{}{}{}".format(datetime.now().strftime("%Y%m%d%H%M%S"), user_id, random.randrange(10000, 99999))
address_info = "{}{}{}-{}".format(address.hcity, address.hproper, address.harea, address.brief)
order = Order.objects.create(
user=user,
order_sn=order_sn,
transport_price=transport.price,
transport=transport.name,
username=address.username,
phone=address.phone,
address=address_info
)
# >>>2. 操作订单商品表
# 操作redis
r = get_redis_connection()
cart_key = get_cart_key(user_id)
# 准备个变量保存商品总金额
goods_total_price = 0
for sku_id in sku_ids:
# 获取商品对象
try:
goods_sku = GoodsskuClassModel.objects.get(pk=sku_id, is_delete=False, is_on_sale=True)
except GoodsskuClassModel.DoesNotExist:
return JsonResponse(json_msg(5, "商品不存在"))
# 获取购物车中商品的数量
# redis 基于内存的存储,有可能数据会丢失
try:
count = r.hget(cart_key, sku_id)
count = int(count)
except:
return JsonResponse(json_msg(6, "购物车中数量不存在!"))
# 判断库存是否足够
if goods_sku.stock < count:
return JsonResponse(json_msg(7, "库存不足!"))
# 保存订单商品表
order_goods = OrderGoods.objects.create(
order=order,
goods_sku=goods_sku,
price=goods_sku.price,
count=count
)
# 添加商品总金额
goods_total_price += goods_sku.price * count
# 扣除库存, 销量增加
goods_sku.stock -= count
goods_sku.sale_num += count
goods_sku.save()
# 3. 反过头来操作订单基本信息表 商品总金额 和 订单总金额
# 订单总金额
order_price = goods_total_price + transport.price
order.goods_total_price = goods_total_price
order.order_price = order_price
order.save()
# 4. 清空redis中的购物车数据(对应sku_id)
r.hdel(cart_key, *sku_ids)
# 3. 合成响应
return JsonResponse(json_msg(0, "创建订单成功!", data=order_sn))
def post(self, request):
# 参数接收
payment = request.POST.get('payment')
order_sn = request.POST.get('order_sn')
user_id = request.session.get('ID')
# 判断参数合法性
try:
payment = int(payment)
except:
return JsonResponse(json_msg(1, "参数错误"))
# 支付方式存在
try:
payment = Payment.objects.get(pk=payment)
except Payment.DoesNotExist:
return JsonResponse(json_msg(2, "支付方式不存在"))
# 判断该订单是否是自己的, 并且是一个未支付的订单
try:
order = Order.objects.get(user_id=user_id,
order_sn=order_sn,
order_status=0)
except Order.DoesNotExist:
return JsonResponse(json_msg(3, "订单不满足要求"))
# 判断 用户是否需要使用支付宝支付
if payment.name == "支付宝":
# 构造支付请求
app_private_key_string = open(
os.path.join(settings.BASE_DIR,
"alipay/user_private_key.txt")).read()
alipay_public_key_string = open(
os.path.join(settings.BASE_DIR,
'alipay/alipay_public_key.txt')).read()
# 初始化对象
alipay = AliPay(
appid="2016092400582019",
app_notify_url=None, # 默认回调url
app_private_key_string=app_private_key_string,
# 支付宝的公钥，验证支付宝回传消息使用，不是你自己的公钥,
alipay_public_key_string=alipay_public_key_string,
sign_type="RSA2", # RSA 或者 RSA2
debug=True # 默认False
)
# 构造请求地址
order_string = alipay.api_alipay_trade_wap_pay(
out_trade_no=order.order_sn, # 订单编号
total_amount=str(order.order_price), # 订单金额
subject="张爸爸超市订单支付", # 订单描述
return_url="http://127.0.0.1:8008/order/pay/", # 同步通知地址
notify_url=None # 异步通知地址 重要
)
# 拼接地址
url = "https://openapi.alipaydev.com/gateway.do?" + order_string
# 通过json返回请求地址
return JsonResponse(json_msg(0, "创建支付地址成功", data=url))
else:
return JsonResponse(json_msg(4, "该支付方式暂不支支持"))
def post(self, request):
"""
保存订单数据
1. 订单基本信息表 和 订单商品表
"""
# 1. 接收参数
transport_id = request.POST.get("transport")
address_id = request.POST.get("address")
sku_ids = request.POST.getlist("sku_ids")
user_id = request.session.get("ID")
user = SpUser.objects.get(pk=user_id)
# 验证数据合法性
try:
transport_id = int(transport_id)
address_id = int(address_id)
sku_ids = [int(i) for i in sku_ids]
except:
return JsonResponse(json_msg(2, "数据不合法"))
# 验证收货地址和运输方式存在
try:
address = UserAddress.objects.get(pk=address_id)
except UserAddress.DoesNotExist:
return JsonResponse(json_msg(3, "收货地址不存在"))
try:
transport = Transport.objects.get(pk=transport_id)
except Transport.DoesNotExist:
return JsonResponse(json_msg(4, "运输方式不存在"))
# 2. 操作数据
# 创建保存点
sid = transaction.savepoint()
# 操作订单基本信息表
order_sn = "{}{}{}".format(datetime.now().strftime("%Y%m%d%H%M%S"),
user_id, random.randrange(10000, 99999))
address_info = "{}{}{}-{}".format(address.hcity, address.hproper,
address.harea, address.brief)
try:
order = Order.objects.create(
user=user,
order_sn=order_sn,
transport_price=transport.price,
transport=transport.name,
username=address.username,
phone=address.phone,
address=address_info,
)
except:
return JsonResponse(json_msg(8, "创建订单基本数据失败"))
# 操作订单商品表
# 操作redis
r = get_redis_connection()
cart_key = get_cart_key(user_id)
goods_total_price = 0
for sku_id in sku_ids:
try:
goods_sku = GoodsSKU.objects.select_for_update().get(
pk=sku_id, is_delete=False, is_on_sale=True)
except GoodsSKU.DoesNotExist:
# 回滚数据
transaction.savepoint_rollback(sid)
return JsonResponse(json_msg(5, "商品不存在"))
# 获取购物车中商品的数量
# redis 是基于内存的存储，有可能数据会丢失
try:
count = r.hget(cart_key, sku_id)
count = int(count)
except:
transaction.savepoint_rollback(sid)
return JsonResponse(json_msg(6, "购物车数量不存在"))
# 判断库存 是否足够
if goods_sku.stock < count:
transaction.savepoint_rollback(sid)
return JsonResponse(json_msg(7, "库存不足"))
order_goods = OrderGoods.objects.create(
order=order,
goods_sku=goods_sku,
price=goods_sku.price,
count=count,
)
goods_total_price += count * goods_sku.price
# 扣除库存 销量增加
# GoodsSKU.objects.filter(pk=sku_id,stock=goods_sku.stock).update(stock=goods_sku.stock-count)
goods_sku.stock -= count
goods_sku.sale_num += count
goods_sku.save()
# 再次操作订单基本信息表 商品总金额 订单总金额
try:
order_total_price = goods_total_price + transport.price
order.goods_total_price = goods_total_price
order.order_total_price = order_total_price
order.save()
except:
# 回滚
transaction.savepoint_rollback(sid)
return JsonResponse(json_msg(9, "更新订单失败"))
# 清空redis中的购物车数据(对应sku_id的)
r.hdel(cart_key, *sku_ids)
# 下单成功，提交事务
transaction.savepoint_commit(sid)
# 3. 合成响应
return JsonResponse(json_msg(0, "创建订单成功", data=order_sn))
