使用 Django Rest Framework 接收“详细信息”：“未找到”以获取详细信息视图

Question

我正在尝试使用 django rest 框架创建一个 api。我需要一个视图来列出数据表中的所有项目，另一个视图根据他们的 id 为个人输出数据。

列表视图适用于“api/bios/”。但是，在向 url 添加 id 时收到以下错误：

HTTP 404 未找到 允许：GET、PUT、PATCH、DELETE、HEAD、OPTIONS 内容类型：应用程序/json 变化：接受

{ “详细信息”：“未找到。” }

views.py

from rest_framework.response import Response
from rest_framework import status
from rest_framework import generics, mixins
from api.models import Playerbios
from api.serializers import USASerializer

class USAListView(mixins.CreateModelMixin, generics.ListAPIView):
    lookup_field = 'trackmanid'
    serializer_class = USASerializer

    def get_queryset(self):
        return Playerbios.objects.all()

    def perform_create(self, serializer):
        serializer.save(user=self.request.user)

    def post(self, request, *args, **kwargs):
        return self.create(request, *args, **kwargs)


class USAView(generics.RetrieveUpdateDestroyAPIView):
    lookup_field = 'trackmanid'
    serializer_class = USASerializer

    def get_queryset(self):
        return Playerbios.objects.all()

serializers.py

from rest_framework import serializers
from api.models import Playerbios

class USASerializer(serializers.ModelSerializer):
    class Meta:
        model = Playerbios
        fields = '__all__'
        lookup_field = 'trackmanid'

ma​​in/urls.py

from django.contrib import admin
from django.urls import path, include
from api.views import USAView, USAListView

urlpatterns = [
    path('admin/', admin.site.urls),
    path('api/bios/', include('api.urls')),
    path('api/bios/<trackmanid>/', include('api.urls')),
    path('accounts/', include('django.contrib.auth.urls')),
    path('', include('webapp.urls')),

]

api/urls.py

from django.conf.urls import url, include
from .views import USAView, USAListView

urlpatterns = [
    url('(?P<trackmanid>)/', USAView.as_view(), name='usa-rud-view'),
    url('', USAListView.as_view(), name='usa-list-view'),
]

Answer 1

您是否考虑过为此 API 使用 Viewsets？ DRF 有一个强大的ViewSet，只需最少的配置即可执行所有这些功能。例如，这可以重写为：

views.py

class USAViewset(ModelViewSet):
    queryset = Playerbios.objects.all()
    serializer_class = USASerializer
    lookup_field = 'trackmanid'

主 urls.py

urlpatterns = [
    ...
    path('api/bios/', include('api.urls')),
    ...    
]

api/urls.py

urlpatterns = patterns(
    '',
)
router = DefaultRouter()
router.register(r'coupon', USAViewset)
urlpatterns += router.urls

DRF 将完成剩下的工作！ 在这里阅读更多：http://www.django-rest-framework.org/api-guide/viewsets/

Answer 2

我的猜测是您需要从主 urls.py 文件中删除这一行

path('api/bios/<trackmanid>/', include('api.urls'))

还要更改您的api/urls.py 以包含正则表达式。格式为?P<name>[regex]。假设trackmanid 是一个整数，您需要在它旁边包含一个\d+ 正则表达式。

url('(?P<trackmanid>\d+)/', USAView.as_view(), name='usa-rud-view'),