Changement droit d'édition à la volé si auteur ou cible.

collabs/admin.py

@@ -69,7 +69,8 @@ class Collabs_hour_Admin(admin.ModelAdmin):
         if request.user.is_superuser:
             #kwargs['form'] = Collabs_hour_Form_admin  # ModelForm
             print("PASS SUPERUSER")
-        if ( obj.userName == request.user.username or obj.user == request.user) and not obj.bNoticed:
+        if obj != None:
+           if (obj.userName == request.user.username or obj.user == request.user) and not obj.bNoticed:
                permission = Permission.objects.get(codename='change_collabs_hour')
                request.user.user_permissions.add(permission)
                request.user = User.objects.get(pk=request.user.id)