Migrating from django user model to a custom user model

Question

I am following these two references (one and two) to have a custom user model in order to authenticate via email and also to add an extra field to it.

class User(AbstractBaseUser, PermissionsMixin):
    email = models.EmailField(
        unique=True,
        max_length=254,
    )
    mobile_number = models.IntegerField(unique=True)
    is_active = models.BooleanField(default=True)
    is_admin = models.BooleanField(default=False)

    objects = UserManager()
    ...
    ...    
    class Meta:
        db_table = 'auth_user'
    ...
    ...

As you can see, I have added the db_table='auth_user' into the Meta fields of the class. Also, I have included AUTH_USER_MODEL = 'accounts.User' and User model app (i.e., accounts)into the INSTALLED_APPS in settings.py. Further more, I deleted the migrations folder from the app.

Then tried migrating:

$ python manage.py makemigrations accounts
Migrations for 'accounts':
  accounts/migrations/0001_initial.py:
    - Create model User

$ python manage.py migrate accounts

Which gives me an error:

django.db.migrations.exceptions.InconsistentMigrationHistory: Migration admin.0001_initial is applied before its dependency accounts.0001_initial on database 'default'.

How can I migrate from the existing django user model into a custom user model?

Answer 1

You have to clear admin, auth, contenttypes, and sessions from the migration history and also drop the tables. First, remove the migration folders of your apps and then type the following:

python manage.py migrate admin zero
python manage.py migrate auth zero
python manage.py migrate contenttypes zero
python manage.py migrate sessions zero

Afterwards, you can run makemigrations accounts and migrate accounts.