From eefe3faa13030b123e0bf8ba6ecdff0c52373157 Mon Sep 17 00:00:00 2001
From: Sebastian Serth <Sebastian.Serth@hpi.de>
Date: Thu, 27 Oct 2022 17:06:04 +0200
Subject: [PATCH] Re-apply default group when external user signs out

---
 app/controllers/sessions_controller.rb | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/app/controllers/sessions_controller.rb b/app/controllers/sessions_controller.rb
index 46360c0f..cf8bc0fc 100644
--- a/app/controllers/sessions_controller.rb
+++ b/app/controllers/sessions_controller.rb
@@ -50,6 +50,12 @@ class SessionsController < ApplicationController
   def destroy
     if current_user&.external_user?
       clear_lti_session_data
+
+      # In case we have another session as an internal user, we set the study group for this one
+      internal_user = find_or_login_current_user
+      if internal_user.present?
+        session[:study_group_id] = internal_user.study_groups.find_by(external_id: nil)&.id
+      end
     else
       logout
     end