core: add general admin.py loader, remove individual files

passbook/core/admin.py

@@ -1,5 +1,24 @@
-"""passbook core model admin"""
+"""passbook core admin"""
 
-from passbook.lib.admin import admin_autoregister
+from django.apps import AppConfig, apps
+from django.contrib import admin
+from django.contrib.admin.sites import AlreadyRegistered
+from guardian.admin import GuardedModelAdmin
+from structlog import get_logger
 
-admin_autoregister("passbook_core")
+LOGGER = get_logger()
+
+
+def admin_autoregister(app: AppConfig):
+    """Automatically register all models from app"""
+    for model in app.get_models():
+        try:
+            admin.site.register(model, GuardedModelAdmin)
+        except AlreadyRegistered:
+            pass
+
+
+for app in apps.get_app_configs():
+    if app.label.startswith("passbook_"):
+        LOGGER.debug("Registering application for dj-admin", app=app.label)
+        admin_autoregister(app)