ModelSerializers实现序列化

/SerDemo/serializers.py

from rest_framework import serializers
from djangoDemo.models import Book
import copy


class PublishSerializer(serializers.Serializer):
    id = serializers.IntegerField()
    title = serializers.CharField(max_length=32)


class AuthorSerializer(serializers.Serializer):
    id = serializers.IntegerField()
    name = serializers.CharField(max_length=32)



class BookSerializer(serializers.ModelSerializer):
    publisher_info = serializers.SerializerMethodField(read_only=True)
    authors_info = serializers.SerializerMethodField(read_only=True)

    def get_authors_info(self, obj):
        authors_querset = obj.authors.all()
        return [{"id": author.id, "name": author.name} for author in authors_querset]

    def get_publisher_info(self, obj):
        publisher_obj = obj.publisher
        return {"id": publisher_obj.id, "title": publisher_obj.title}

    class Meta:
        model = Book
        fields = "__all__"
        # exclude=["id"]
        # 会让你这些所有的外键关系变成read_only = True
        # depth = 1
        extra_kwargs = {"publisher": {"write_only": True}, "authors": {"write_only": True}}

/DRFDemo/DRFDemo/urls.py

from django.conf.urls import url
from .views import BookView, BookEditView
urlpatterns = [
    url(r'^book/', BookView.as_view()),
    url(r'^books/(?P<id>\d+)', BookEditView.as_view()),
]

/DRFDemo/SerDemo/views.py

from rest_framework.views import APIView
from djangoDemo.models import Book
from .serializers import BookSerializer
from rest_framework.response import Response

class BookEditView(APIView):
    def get(self, request, id):
        book_obj = Book.objects.filter(id=id).first()
        ser_obj = BookSerializer(book_obj)
        return Response(ser_obj.data)

    def put(self, request, id):
        book_obj = Book.objects.filter(id=id).first()
        # partial=True  对序列化器中的update方法中, 只对部分字段进行校验
        ser_obj = BookSerializer(instance=book_obj, data=request.data, partial=True)
        if ser_obj.is_valid():
            ser_obj.save()
            return Response(ser_obj.validated_data)
        return Response(ser_obj.errors)

ModelSerializers实现序列化

原文：https://www.cnblogs.com/cjwnb/p/11688848.html