How to add a field dynamically to a CustomUser model inheriting from mongoengine.django.auth.User?

Question

I am using mongoengine with django. I have a CustomUser model inheriting from mongoengine.django.auth.User that defines some fields. I have a field, which is only needed for some users. I don't want this field in every User objects. As mongoengine.django.auth.User is inherited from mongoengine.Document from which CustomUser model is inherited I can't add fields into it dynamically.So I made my CustomUser model to inherit from both mongoengine.django.auth.User and mongoengine.DynamicDocument

from mongoengine.django.auth import User
from mongoengine import DynamicDocument

class CustomUser(User, DynamicDocument):
    # fields

Using this method I am able to dynamically create fields for CustomUser. But I want to know if it is ok to do this. If there are any other better methods available, please suggest. Thanks.

Answer 1

Yes thats totally valid as the mongoengine.django.auth.User class is inheritable.

Alternative approaches might be to extend explicitly for different types of user eg:

class AdminUser(User):
    role = StringField()

Then you can just use:

User.objects(username=blah)

And if that User is an AdminUser it will return the correct class instance