How to create a drop in serializer replacement for Django ReadOnlyViewSet that is very fast?
I've noticed that Django Serializers are extremely slow even after N+1 type problems (I think). I'm basing that off my own experience and questions such as these
- ModelSerializer is extremely slow in Django REST framework
- https://hakibenita.com/django-rest-framework-slow
In my case I have a model for users
from django.contrib.auth.models
from rest_framework.viewsets import ReadOnlyModelViewSet
class UserViewSet(ReadOnlyModelViewSet):
queryset = User.objects.all()
serializer_class = UserSerializer
filterset_fields = {'groups__name': ['exact', 'in']
If I have a function like:
def serialize_user(user_instance):
return {f: getattr(user_instance, f) for f in user_instance._meta.fields}
how do I write a custom serializer class so I can use it as serializer_class = MyUserSerializer and it skips validation etc. I expect since it's readonly validation also doesn't make as much sense but maybe I'm missing something.