create_mixin.py

class ArticleView(ListModelMixin, CreateModelMixin, GenericAPIView):
    queryset = Article.objects.all()
    serializer_class = ArticleSerializer

    def perform_create(self, serializer):
        author = get_object_or_404(Author, id=self.request.data.get('author_id'))
        return serializer.save(author=author)

    def get(self, request, *args, **kwargs):
        return self.list(request, *args, *kwargs)

    def post(self, request, *args, **kwargs):
        return self.create(request, *args, **kwargs)

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