drf之接口、高级定制字段、多表关联

简单添加图书五个接口

在视图类中

from rest_framework.views import APIView
from app01.models import Book
from .serializer import BookSerializer
from rest_framework.response import Response


class BookView(APIView):
    def get(self, request):
        book = Book.objects.all()
        ser = BookSerializer(instance=book, many=True)
        return Response(ser.data)

    def post(self, request):
        ser = BookSerializer(data=request.data)
        if ser.is_valid():
            ser.save()
            return Response({
   
   'code': 100, 'msg': '保存成功', 'data': ser.data})
        else:
            return Response({
   
   'code': 101, 'msg': ser.errors})


class BookDetailView(APIView):
    def put(self, request, pk):
        book = Book.objects.filter(pk=pk).first()
        ser = BookSerializer(instance=book, data=request.data)
		# 如果instance为空就会进入craete
        if ser.is_valid():
            ser.save()
            return Response({
   
   'code': 100, 'msg': '修改成功', 'data': ser.data})
        else:
            return Response({
   
   'code': 101, 'msg': ser.errors})

    def delete(self, request, pk):
        Book.objects.filter(pk=pk).delete()
        return Response({
   
   'code': 100, 'msg'