drf——多表关联的反序列化之保存与修改

序列化的字段有：name，price ，publish_detail，author_list

反序列化字段：name，price ，publish，author

 

反序列化之保存

 

代码书写：

视图类：

class BookView(APIView):
    def post(self, request):
        ser = BookSerialzier(data=request.data)
        if ser.is_valid():
            ser.save()
            return Response({'code': 100, 'msg': '成功'})
        else:
            return Response({'code': 100, 'msg': ser.errors})

 

序列化类：

class BookSerialzier(serializers.Serializer):
    # 即用来做序列化，又用来做反序列化
    name = serializers.CharField(max_length=8)
    price = serializers.CharField()

    # 这俩，只用来做序列化
    publish_detail = serializers.DictField(read_only=True)  # 只读
    author_list = serializers.ListField(read_only=True)

    # 这俩，只用来做反序列化
    publish_id = serializers.IntegerField(write_only=True)  # 只写
    authors = serializers.ListField(write_only=True)

    def create(self, validated_data):  # {name:西游记，price:88,publish:1,authors:[1,2]
        authors = validated_data.pop('authors')
        book = Book.objects.create(**validated_data)
        book.authors.add(*authors)
        return book

 

反序列化之修改

 

视图类

class BookDetailView(APIView):

    def put(self, request,pk):
        book=Book.objects.get(pk=pk)
        ser = BookSerialzier(data=request.data,instance=book)
        if ser.is_valid():
            ser.save()
            return Response({'code': 100, 'msg': '更新成功'})
        else:
            return Response({'code': 100, 'msg': ser.errors})

 

序列化类

class BookSerialzier(serializers.Serializer):
    # 即用来做序列化，又用来做反序列化
    name = serializers.CharField(max_length=8)
    price = serializers.CharField()

    # 这俩，只用来做序列化
    publish_detail = serializers.DictField(read_only=True)
    author_list = serializers.ListField(read_only=True)

    # 这俩，只用来做反序列化
    publish_id = serializers.IntegerField(write_only=True)
    authors = serializers.ListField(write_only=True)

 

 

 

视图层代码书写：

from django.shortcuts import render

# Create your views here.
from rest_framework.views import APIView

from .serializer import BookSerialzier
from rest_framework.response import Response
from .models import Book


class BookView(APIView):
    def get(self, request):
        qs = Book.objects.all()
        ser = BookSerialzier(qs, many=True)
        return Response({'code': 100, 'msg': '成功', 'results': ser.data})

    def post(self, request):
        ser = BookSerialzier(data=request.data)
        if ser.is_valid():
            ser.save()
            return Response({'code': 100, 'msg': '成功'})
        else:
            return Response({'code': 100, 'msg': ser.errors})


class BookDetailView(APIView):
    def get(self, request, pk):
        book = Book.objects.all().get(pk=pk)
        ser = BookSerialzier(book)
        return Response({'code': 100, 'msg': '成功', 'results': ser.data})

    def put(self, request,pk):
        book=Book.objects.get(pk=pk)
        ser = BookSerialzier(data=request.data,instance=book)
        if ser.is_valid():
            ser.save()
            return Response({'code': 100, 'msg': '更新成功'})
        else:
            return Response({'code': 100, 'msg': ser.errors})