Python Django REST:Auth user未传递给serialiser错误-需要字段

我不确定我做错了什么，但是经过身份验证的用户没有在serialiser中注册

型号.py

class Post(models.Model):
    posted_by = models.ForeignKey('auth.User', on_delete=models.CASCADE)


    def save(self, *args, **kwargs):
        super(Post, self).save(*args, **kwargs)

class PostSerializer(serializers.ModelSerializer):

    class Meta:
        model = Post
        fields = '__all__'

    def create(self, validated_data):
        post = Post.objects.create(**validated_data)
        # extra code to add images

class PostViewSet(viewsets.ModelViewSet):

    serializer_class = PostSerializer

    permission_classes = (
        permissions.IsAuthenticatedOrReadOnly,
        IsOwnerOrReadOnly, )

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

序列化程序.py

class Post(models.Model):
    posted_by = models.ForeignKey('auth.User', on_delete=models.CASCADE)


    def save(self, *args, **kwargs):
        super(Post, self).save(*args, **kwargs)

class PostSerializer(serializers.ModelSerializer):

    class Meta:
        model = Post
        fields = '__all__'

    def create(self, validated_data):
        post = Post.objects.create(**validated_data)
        # extra code to add images

class PostViewSet(viewsets.ModelViewSet):

    serializer_class = PostSerializer

    permission_classes = (
        permissions.IsAuthenticatedOrReadOnly,
        IsOwnerOrReadOnly, )

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

视图.py

class Post(models.Model):
    posted_by = models.ForeignKey('auth.User', on_delete=models.CASCADE)


    def save(self, *args, **kwargs):
        super(Post, self).save(*args, **kwargs)

class PostSerializer(serializers.ModelSerializer):

    class Meta:
        model = Post
        fields = '__all__'

    def create(self, validated_data):
        post = Post.objects.create(**validated_data)
        # extra code to add images

class PostViewSet(viewsets.ModelViewSet):

    serializer_class = PostSerializer

    permission_classes = (
        permissions.IsAuthenticatedOrReadOnly,
        IsOwnerOrReadOnly, )

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

我不明白为什么

serializer.save（posted\u by=self.request.user）

不能按预期工作。它应该传递有关字段的所需信息

当我做POST请求时，我得到的错误是

{
    "posted_by": [
        "This field is required."
    ]
}

---

我认为这与serialiser中的

create

方法有关。由于某些原因，

发布的
未出现在
验证的\u数据中（或类似内容）。我想知道幕后到底发生了什么。
只需将
posted\u by
指定为只读字段即可

class PostSerializer(serializers.ModelSerializer):

    class Meta:
        model = Post
        fields = '__all__'
        read_only_fields = ('posted_by', )