Django 序列化器用于一个对象

使用 Django 序列化器可以方便地将一个对象转化为可传输或可存储的格式，并且能够自动处理对象之间的关联关系。这在开发 Web 应用程序时非常有用，尤其是在需要将数据库中的数据转换为 JSON 或其他格式以供前端使用的情况下。

python
from django.db import models
class Author(models.Model):
    name = models.CharField(max_length=100)
    email = models.EmailField()
    bio = models.TextField()
    def __str__(self):
        return self.name
class Post(models.Model):
    title = models.CharField(max_length=200)
    content = models.TextField()
    publish_date = models.DateField()
    author = models.ForeignKey(Author, on_delete=models.CASCADE)
    def __str__(self):
        return self.title

python
from rest_framework import serializers
from .models import Author, Post
class AuthorSerializer(serializers.ModelSerializer):
    class Meta:
        model = Author
        fields = '__all__'
class PostSerializer(serializers.ModelSerializer):
    author = AuthorSerializer()
    class Meta:
        model = Post
        fields = '__all__'

python
from rest_framework.response import Response
from rest_framework.decorators import api_view
from .serializers import PostSerializer
@api_view(['GET'])
def get_posts(request):
    posts = Post.objects.all()
    serializer = PostSerializer(posts, many=True)
    return Response(serializer.data)