Проблемы json в django rest framework, как решить проблему с не стандартными моделями?

Question

[cahu]

models.py

class Post(models.Model):
    title = models.CharField(max_length=100)
    text = models.CharField(max_length=200)
    putdate = models.DateTimeField(auto_now_add=True)
    tags = models.ForeignKey('Tags', on_delete=models.PROTECT)
    def __str__(self):
        return self.title
    
class Tags(models.Model):
    name = models.CharField(max_length=255)

    def __str__(self):
        return self.name

selizator.py

class PostSerializer(serializers.ModelSerializer):
        
        
        model = Post
        fields = ['id', 'title', 'text', 'putdate', 'tags']

        
class TagsSerializer(serializers.ModelSerializer):
    class Meta:
        model = Tags
        fields = '__all__'

views.py

class PostView(APIView):
    def get(self, request):
        output = [{"title": output.title,
                     "text": output.text,
                     "putdate": output.putdate,
                      "tags": output.tags }
                     for output in Post.objects.all()]
        return Response(output)
    def post(self, request):
        serializer = PostSerializer(data=request.data)
        if serializer.is_valid(raise_exception=True):
            serializer.save()
            return Response(serializer.data)
        
class TagViewSet(viewsets.ModelViewSet):
    queryset = Tags.objects.all()
    serializer_class = TagsSerializer

и сама ошибка

raise TypeError(f'Object of type {o.__class__.__name__} '
TypeError: Object of type Tags is not JSON serializable
[17/Jul/2023 23:43:37] "GET / HTTP/1.1" 500 106197