django rest framework 教程（一）视图

一、概要schema

views

二、概念concept

• APIView：继承并扩充了django的view

• ViewSetMixin：重写了as_view方法，提供了http动词到视图中具体方法的绑定，比如get映射到list方法

• GenericAPIViewSet：通用API view

• ListAPIView：具体的API view

• ListModelMixin：提供了list方法，省去了用户自己实现list方法的麻烦，只需要在urls里as_view一下

• xxxView：用户自定义的view，比如GoodsListView，混合了ListAPIView和若干model mixins

• xxxViewSet：用户自定义的viewset，比如GoodslistViewSet

三、示例example

class ListUsers(APIView):
    authentication_classes = (authentication.TokenAuthentication,)
    permission_classes = (p  ermissions.IsAdminUser,)
    def get(self, request, format=None):
        usernames = [user.username for user in User.objects.all()]
        return Response(usernames)

class RetrieveUserView(MultipleFieldLookupMixin, generics.RetrieveAPIView):
    queryset = User.objects.all()
    serializer_class = UserSerializer
    lookup_fields = ('account', 'username')

class CreateListRetrieveViewSet(mixins.CreateModelMixin,
                                mixins.ListModelMixin,
                                mixins.RetrieveModelMixin,
                                viewsets.GenericViewSet):
    """
    A viewset that provides `retrieve`, `create`, and `list` actions.

    To use it, override the class and set the `.queryset` and
    `.serializer_class` attributes.
    """
    pass

from myapp.views import UserViewSet
from rest_framework.routers import DefaultRouter

router = DefaultRouter()
router.register(r'users', UserViewSet, base_name='user')
urlpatterns = router.urls