Using a custom AdminSite subclass

[Oliver Kraitschy]

Hello everybody,

I'm using a custom AdminSite subclass. But since the update from Django 2.0.13 to 2.2.12 I'm having problems to get it recognized when creating or running migrations.

This is what I have in hal/admin.py:

from django.contrib import admin

class HalAdminSite(admin.AdminSite):
    # ...

admin_site = HalAdminSite()
admin_site.register(Profile)
# ...

This is what I have in hal/apps.py:

from django.contrib.admin.apps import AdminConfig

class HalAdminConfig(AdminConfig):
    default_site = 'hal.admin.HalAdminSite'

This is what I have in settings.py:

INSTALLED_APPS = [
    # ....
    'hal.apps.HalAdminConfig',
    # ...
]

Nevertheless I get the following exceptions when running makemigrations or migrate:

AttributeError: module 'hal.admin' has no attribute 'HalAdminSite'
ImportError: Module "hal.admin" does not define a "HalAdminSite" attribute/class

Any hints about how I can fix this? That would be really appreciated!.


Greetings
Oliver