Django Rest框架:如何在发布对象时将对象与用户关联

from django.db import models
from django.contrib.auth.models import User

class Post(models.Model):
    title = models.CharField(max_length=255)
    content = models.TextField()
    author = models.ForeignKey(User, on_delete=models.CASCADE)

from rest_framework import serializers
from .models import Post

class PostSerializer(serializers.ModelSerializer):
    class Meta:
        model = Post
        fields = ['id', 'title', 'content', 'author']
        read_only_fields = ['author']  # author字段只读

    def create(self, validated_data):
        request = self.context.get('request')
        validated_data['author'] = request.user
        return super().create(validated_data)

from rest_framework import viewsets
from .models import Post
from .serializers import PostSerializer

class PostViewSet(viewsets.ModelViewSet):
    queryset = Post.objects.all()
    serializer_class = PostSerializer

class PostViewSet(viewsets.ModelViewSet):
    serializer_class = PostSerializer

    def get_queryset(self):
        return Post.objects.filter(author=self.request.user)