导入错误：无法从 Django 和 ReactJs 中的'core.api.views'导入名称'OrderDetailView'

Question

在我构建 OrderDetailView 类之后，

我在后端运行python manage.py migrate它将错误显示为

从 .views 导入 ( 导入错误：无法从"core.api.views"导入名称"OrderDetailView"(C：\Users\Dell\project7\core\api\views.py(

在前端，它显示错误为Network Error

"message"："网络错误"，"name"："错误

"，"堆栈"："错误： 网络错误 at>createError (http://localhost:3000/static/js/0.chunk.js:1970:15( at XMLHttpRequest.handleError

API> urls.py

from django.urls import path
from .views import (
ItemListView,
AddToCartView,
OrderDetailView
)
urlpatterns = [
path('product-list/', ItemListView.as_view(), name='product-list'),
path('add-to-cart/', AddToCartView.as_view(), name='add-to-cart'),
path('order-summary/', OrderDetailView.as_view(), name='order-summary')
]

接口> views.py

from django.conf import settings
from django.core.exceptions import ObjectDoesNotExist
from django.shortcuts import render, get_object_or_404
from django.utils import timezone
from rest_framework.generics import ListAPIView, RetrieveAPIView
from rest_framework.permissions import AllowAny, IsAuthenticated
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework.status import HTTP_200_OK, HTTP_400_BAD_REQUEST
from core.models import Item, OrderItem, Order
from .serializers import ItemSerializer, OrderSerializer

class ItemListView(ListAPIView):
permission_classes = (AllowAny,)
serializer_class = ItemSerializer
queryset = Item.objects.all()
class OrderDetailView(RetrieveAPIView):
serializer_class = OrderSerializer
permission_classes = (IsAuthenticated,)
def get_object(self):
try:
order = Order.objects.get(
user=self.request.user, ordered=False)
except ObjectDoesNotExist:
return Response({"message": "You do not have an active order"}, status=HTTP_400_BAD_REQUEST)

常量.js

const localhost = "http://127.0.0.1:8000";
const apiURL = "/api";
export const endpoint = `${localhost}${apiURL}`;
export const productListURL = `${endpoint}/product-list/`;
export const addToCartURL = `${endpoint}/add-to-cart/`;
export const orderSummaryURL = `${endpoint}/order-summary/`;

Answer 1

您的视图需要更改为。

from django.conf import settings
from django.core.exceptions import ObjectDoesNotExist
from django.shortcuts import render, get_object_or_404
from django.utils import timezone
from rest_framework.generics import ListAPIView, RetrieveAPIView
from rest_framework.permissions import AllowAny, IsAuthenticated
from rest_framework.views import APIView
from rest_framework.response import Response
from rest_framework.status import HTTP_200_OK, HTTP_400_BAD_REQUEST
from core.models import Item, OrderItem, Order
from .serializers import ItemSerializer, OrderSerializer

class ItemListView(ListAPIView):
permission_classes = (AllowAny,)
serializer_class = ItemSerializer
queryset = Item.objects.all()
class OrderDetailView(RetrieveAPIView):
serializer_class = OrderSerializer
permission_classes = (IsAuthenticated,)
def get_object(self):
try:
order = Order.objects.get(user=self.request.user, ordered=False)
except ObjectDoesNotExist:
return Response({"message": "You do not have an active order"}, status=HTTP_400_BAD_REQUEST)