From 323847aa519d3d1ecc03e202d84500a78a02c6aa Mon Sep 17 00:00:00 2001
From: GeorgianaElena <georgiana.dolocan@gmail.com>
Date: Mon, 1 Jul 2019 11:18:38 +0300
Subject: [PATCH] Validate user groups

---
 tljh/jupyterhub_config.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tljh/jupyterhub_config.py b/tljh/jupyterhub_config.py
index 325d9c6..8ffecc7 100644
--- a/tljh/jupyterhub_config.py
+++ b/tljh/jupyterhub_config.py
@@ -21,7 +21,7 @@ class UserCreatingSpawner(SystemdSpawner):
 
     FIXME: Remove this somehow?
     """
-    user_groups = Dict(config=True)
+    user_groups = Dict(key_trait=Unicode(), value_trait=List(Unicode(), config=True))
 
     def start(self):
         """