在DRF中创建对象时如何更改相关对象

我想在创建预订时更改Book对象中的is_available字段。我找到了一种粘贴在这里的方法,但这个挖掘请求看起来很混乱,所以对于像drf这样成熟的框架来说,可能有更好的方法可以做到这一点。

所以我有serializer.py

class BookSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = BookModel
        fields = ["number", "title", "author", "is_available"]


class ReservationSerializer(serializers.HyperlinkedModelSerializer):
    class Meta:
        model = ReservationModel
        fields = ["reserved_by", "book", "started_at", "valid_until"]

和视图.py

class BookViewSet(viewsets.ModelViewSet):
    queryset = BookModel.objects.all()
    serializer_class = BookSerializer
    permission_classess = []


class ReservationViewSet(viewsets.ModelViewSet):
    queryset = ReservationModel.objects.all()
    serializer_class = ReservationSerializer
    permission_classess = []

    def perform_create(self, request, *args, **kwargs):
        super().perform_create(request, *args, **kwargs)
        book = BookModel.objects.get(pk=request.data.serializer.instance.book_id)
        book.is_available = False
        book.save()

我发布了我所做的,请教我做得更好——正确的方式