如果你正在使用通用视图，并且你想在保存实例时注入当前用户，那么你可以覆盖perform_create或perform_update:

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

User将作为一个属性添加到kwargs中，您可以通过serializer中的validated_data访问它

user = validated_data['user']

您无法访问该请求。直接用户。您需要访问请求对象，然后获取用户属性。

是这样的:

user =  self.context['request'].user

或者为了安全起见，

user = None
request = self.context.get("request")
if request and hasattr(request, "user"):
    user = request.user

更多的上下文可以在这里阅读

实际上，你不需要考虑上下文。有一个更好的方法:

from rest_framework.fields import CurrentUserDefault

class PostSerializer(serializers.ModelSerializer):

    class Meta:
        model = Post

   def save(self):
        user = CurrentUserDefault()  # <= magic!
        title = self.validated_data['title']
        article = self.validated_data['article']

你需要在你的序列化器中做一个小编辑:

class PostSerializer(serializers.ModelSerializer):

    class Meta:
        model = Post

    def save(self):
        user = self.context['request'].user
        title = self.validated_data['title']
        article = self.validated_data['article']

下面是一个使用Model混合视图集的示例。在create方法中，您可以找到调用序列化器的正确方法。Get_serializer方法正确地填充上下文字典。如果需要使用视图集上定义的不同的序列化器，请参阅update方法，了解如何使用上下文字典初始化序列化器，该方法还将请求对象传递给序列化器。

class SignupViewSet(mixins.UpdateModelMixin, mixins.CreateModelMixin, viewsets.GenericViewSet):

    http_method_names = ["put", "post"]
    serializer_class = PostSerializer

    def create(self, request, *args, **kwargs):
        serializer = self.get_serializer(data=request.data)
        serializer.is_valid(raise_exception=True)
        self.perform_create(serializer)
        headers = self.get_success_headers(serializer.data)
        return Response(serializer.data, status=status.HTTP_201_CREATED, headers=headers)

    def update(self, request, *args, **kwargs):
        partial = kwargs.pop('partial', False)
        instance = self.get_object()
        kwargs['context'] = self.get_serializer_context()
        serializer = PostSerializer(instance, data=request.data, partial=partial, **kwargs)
        serializer.is_valid(raise_exception=True)
        self.perform_update(serializer)    
        return Response(serializer.data)

正如Igor在其他回答中提到的，您可以使用CurrentUserDefault。如果你不想为此重写save方法，那么使用doc:

from rest_framework import serializers

class PostSerializer(serializers.ModelSerializer):
    user = serializers.PrimaryKeyRelatedField(read_only=True, default=serializers.CurrentUserDefault())
    class Meta:
        model = Post

你可以通过请求。用户在视图中调用.save(…)时:

class EventSerializer(serializers.ModelSerializer):

    class Meta:
        model = models.Event
        exclude = ['user']


class EventView(APIView):

    def post(self, request):
        es = EventSerializer(data=request.data)
        if es.is_valid():
            es.save(user=self.request.user)
            return Response(status=status.HTTP_201_CREATED)
        return Response(data=es.errors, status=status.HTTP_400_BAD_REQUEST)

这是模型:

class Event(models.Model):
    user = models.ForeignKey(to=settings.AUTH_USER_MODEL, on_delete=models.CASCADE)
    date = models.DateTimeField(default=timezone.now)
    place = models.CharField(max_length=255)