DRF url 路由与 genericview RetrieveUpdateAPIView 不匹配答案

【问题标题】：DRF url route did not match for genericview RetrieveUpdateAPIViewDRF url 路由与 genericview RetrieveUpdateAPIView 不匹配
【发布时间】：2020-10-31 20:34:48
【问题描述】：

我已将以下路由添加到我的 Django Rest 框架项目中，该 url 匹配良好并返回订单和库存的列表视图，但它与详细视图 order/<int:order_no> 和 inventory/<int:pk> 不匹配

localhost:8000/FD/orders/ 工作但 localhost:8000/FD/order/1/不匹配返回

Using the URLconf defined in FriendsDigital.urls, Django tried these  
URL patterns, in this order:  
 
1. admin/  
2. ^rest-auth/  
3. ^FD/ ^inventories/$ [name='inventory_list']   
4. ^FD/  ^inventory/<int:pk>/ [name='inventory_edit']  
5. ^FD/ ^orders/ [name='orders_list']  
6. ^FD/ ^order/<int:order_no>/ [name='order_update']  

The current path, FD/order/1/, didn't match any of these

库存也是同样的问题

网址.py

urlpatterns = [
    url('^inventories/$', InventoryList.as_view(), name='inventory_list'),
    url('^inventory/<int:pk>/', InventoryRetrieveUpdate.as_view(), name='inventory_edit'),
    url('^orders/', BusinessOrderList.as_view(), name='orders_list'),
    url('^order/<int:order_no>/',BusinessOrderUpdate.as_view(), name='order_update')
]

views.py

class InventoryList(generics.ListAPIView):
    queryset= Inventory.objects.all()
    serializer_class = InventorySerializer

class InventoryRetrieveUpdate(generics.RetrieveUpdateAPIView):
    queryset = Inventory.objects.all()
    serializer_class = InventorySerializer

class BusinessOrderList(generics.ListCreateAPIView):
    queryset = BusinessOrder.objects.all()
    serializer_class = BusinessOrderSerializer

class BusinessOrderUpdate(generics.RetrieveUpdateAPIView):
    queryset = BusinessOrder.objects.all()
    serializer_class = BusinessOrderSerializer

Django 版本 - 3.0.7 DjangoRestFramework - 3.11.0

【问题讨论】：

标签： python django django-rest-framework django-urls django-generic-views

【解决方案1】：

DRF 查找字段默认为“pk”，因此您必须手动指定查找字段：

class BusinessOrderUpdate(generics.RetrieveUpdateAPIView):
    queryset = BusinessOrder.objects.all()
    serializer_class = BusinessOrderSerializer
    lookup_field = 'order_no'

【讨论】：

【解决方案2】：

如果您想为您的网址使用尖括号表示法 (<int:order_no>)，您需要使用 path。 url 函数是 re_path 的别名，它使用正则表达式

from django.urls import path

urlpatterns = [
    ...
    path('order/<int:order_no>/', BusinessOrderUpdate.as_view(), name='order_update')
]

【讨论】：