FeedAPIView.py

class FeedAPIView(ListAPIView):

    serializer_class = PostSerializer
    permission_classes = (IsAuthenticated,)

    def get_queryset(self) -> QuerySet:
        user = self.request.user
        followers = user.following
        follower_ids = list(followers.values_list('id', flat=True)) + [user.id]
        return Post.objects.filter(user__in=follower_ids).order_by('-timestamp')