Any User can be further classified into one of various sub-types:
- superuser.- The most powerful user with permissions to create, read, update and delete data in the Django admin, which includes model records and other users.
- staff.- A user marked as staff can access the Django admin. But permissions to create, read, update and delete data in the Django admin must be given explicitly to a user. By default, a superuser is marked as staff.
- active.- All users are marked as active if they're in good standing. Users marked as inactive aren't able to authenticate themselves, a common state if there's a pending post-registration step (e.g. confirm email) or a user is banned and you don't want to delete his data.
