Plus simple et utile : un signal post-connexion global

authens/backends.py

@@ -3,7 +3,7 @@ from django.db import transaction
 
 from authens.models import CASAccount, OldCASAccount
 from authens.utils import get_cas_client, parse_entrance_year
-from authens.signals import post_cas_create
+from authens.signals import post_cas_connect
 
 UserModel = get_user_model()
 
@@ -88,6 +88,7 @@ class ENSCASBackend:
         if entrance_year is None:
             raise ENSCASError("Entrance year not available")
 
+        account_created = False
         with transaction.atomic():
             try:
                 user = UserModel.objects.get(cas_account__cas_login=cas_login)
@@ -108,9 +109,12 @@ class ENSCASBackend:
                 CASAccount.objects.create(
                     user=user, entrance_year=entrance_year, cas_login=cas_login
                 )
-                post_cas_create.send(
-                    CASAccount, cas_login=cas_login, attributes=attributes
-                )
+                account_created = True
+
+        post_cas_connect.send(
+            UserModel, instance=user, created=account_created, cas_login=cas_login,
+            attributes=attributes
+        )
         return user
 
     # Django boilerplate.

authens/signals.py

@@ -1,3 +1,3 @@
 import django.dispatch
 
-post_cas_create = django.dispatch.Signal()
+post_cas_connect = django.dispatch.Signal()