Question

我正在从网站上读取json文件，如果该记录不在我的“客户”查询集中，我想为该记录创建一个新的“客户”。发生的事情是，当我遍历查询集时，Django试图创建一个新客户，即使该客户已在查询集中也是如此。

请在下面查看我的代码：

from rest_framework import generics
from customer.models import Customers
from .serializers import CustomersSerializer
import json
import urllib.request

class CustomerAPIView(generics.ListAPIView):
    j = urllib.request.urlopen("https://web.njit.edu/~jsd38/json/customer.json")
    customer_data = json.load(j)
    queryset1 = Customers.objects.values_list('CustomerId', flat=True)
    for customer in customer_data:
        if customer["@Id"] not in queryset1.iterator():
            CustomerId = customer["@Id"]
            Name = customer["Name"]
            PhoneNumber = customer["PhoneNumber"]
            EmailAddress = customer["EmailAddress"]
            StreetLine = customer["Address"]["StreetLine1"]
            City = customer["Address"]["City"]
            StateCode = customer["Address"]["StateCode"]
            PostalCode = customer["Address"]["PostalCode"]
            cus = Customers()
            cus.CustomerId = CustomerId
            cus.Name = Name
            cus.PhoneNumber = PhoneNumber
            cus.EmailAddress = EmailAddress
            cus.StreetLine = StreetLine
            cus.City = City
            cus.StateCode = StateCode
            cus.PostalCode = PostalCode
            cus.save()
    queryset = Customers.objects.all()
    serializer_class = CustomersSerializer

Answer 1

您的JSON返回“ @Id”键的字符串，我假设您的模型Customers的整数为CustomerId字段。

您应将它们转换为str或int：

if int(customer["@Id"]) not in queryset1:
    ...

如何遍历Django模型的查询列表

1 个答案: