Check @exercise prior usage

2020-03-04 17:57:45 +01:00
parent dbfc1b2e11
commit 58031587de
1 changed files with 1 additions and 1 deletions
--- a/app/controllers/concerns/lti.rb
+++ b/app/controllers/concerns/lti.rb
@ -110,7 +110,7 @@ module Lti
                else
                  proxy_exercise.get_matching_exercise(@current_user)
                end
-    session[:lti_exercise_id] = @exercise.id
+    session[:lti_exercise_id] = @exercise.id if @exercise
    refuse_lti_launch(message: t('sessions.oauth.invalid_exercise_token')) unless @exercise
  end