多种支付实现(只需要添加, 修改类方法)

urls.py

from django.conf.urls import url
from django.contrib import admin
from app01.views import user,banner,goods,categroy,order

urlpatterns = [
    url(r'^admin/', admin.site.urls),
    url(r'^user/wxapp/login', user.Login.as_view()),
    url(r'^banner/list', banner.List.as_view()),
    url(r'^hotgoods/list', goods.HoteGoods.as_view()),
    url(r'^category/all', categroy.List.as_view()),
    url(r'^goods/list', goods.List.as_view()),
    url(r'^goods/detail', goods.Detail.as_view()),
    url(r'^order/create', order.Create.as_view()),    # 支付
    url(r'^order/notify/<paymethod>', order.Notify.as_view()),    # 支付回调
]

views/order.py

import importlib

class Create(APIView):
    def post(self,request):
        ...
         # pay_method = 'Wxpay'    假设用户传入的是微信支付方法
         try:
               # pay_file是对象
               pay_file = importlib.import_module(f'app01.Pay.{pay_method}')　　# 此方法将字符串作为路径导入
               pay_class = getattr(pay_file,pay_method)
               data = pay_class().pay(order_data)
         except:
               return Response({'code':201,'msg':'未知支付方式'})
            
         # 1对接小程序支付
         # 2我们要用celery去定时检查，改订单在指定时间内有没有支付，没有支付，取消订单，回滚库存

         return Response({'code':200,'msg':'ok','data':data})
            
            
class Notify(APIView):    # 处理支付回调，因为每种支付方式返回数据不同，处理方式放在Pay文件下的各个类中
    def post(self,request,paymethod):
        pay_file = importlib.import_module(f'app01.Pay.{paymethod}')
        pay_class = getattr(pay_file,paymethod)
        data = pay_class().notify(request.data)
        if data['status']=='success':
            models.Order.objects.filter(order_id=data['order_id']).update(pay_status=1)
            return Response(data['print'])

Pay/Alipay.py

class Alipay():
    def pay(self,order_data):
        # 统一下单方法
        pass

        # 回调地址：
        notify_url = 'http://127.0.0.1:8000/order/notify/<Alipay>'
    def notify(self,notify_data):
        if notify_data['success']:
            # notify_data['order_id']表示商城订单
            data = {'status':'success','order_id':notify_data['order_id'],'print':'0000'}#自定义返回参数
            return data