custom django-user object has no attribute 'has_module_perms'

Question

My custom user model for login via email:

class MyUser(AbstractBaseUser):
    id = models.AutoField(primary_key=True)  # AutoField?
    is_superuser = models.IntegerField(default=False)
    username = models.CharField(unique=True,max_length=30)
    first_name = models.CharField(max_length=30, default='')
    last_name = models.CharField(max_length=30, default='')
    email = models.EmailField(unique=True,max_length=75)
    is_staff = models.IntegerField(default=False)
    is_active = models.IntegerField(default=False)
    date_joined = models.DateTimeField(default=None)

    # Use default usermanager
    objects = UserManager()

    USERNAME_FIELD = 'email'
    REQUIRED_FIELDS = ['username']

    class Meta:
        db_table = 'auth_user'

For which, I'm able to successfully create a superuser. However, when I try to login with email and password, I get this error:

'MyUser' object has no attribute 'has_module_perms'

Any idea what I'm doing wrong ?

Answer 1

Your User implementation is not providing the mandatory methods to be used with the Admin module.

See https://docs.djangoproject.com/en/4.0/topics/auth/customizing/#custom-users-and-django-contrib-admin.

In your case, add the permissions mixin (PermissionsMixin), as a superclass of your model:

from django.contrib.auth.models import PermissionsMixin


class MyUser(AbstractBaseUser, PermissionsMixin):
     # ...

It is described here : https://docs.djangoproject.com/en/4.0/topics/auth/customizing/#custom-users-and-permissions

It works with Django 1.x, 2.x, 3.x and 4.x.

EDIT: updated links to django version 4.0