From c1b31a0c934031998546105c8fbf69b9233bb7a4 Mon Sep 17 00:00:00 2001
From: Roel Bruggink <roel@jaroel.nl>
Date: Mon, 31 Oct 2016 19:50:58 +0100
Subject: [PATCH] Add fix

---
 src/plone/api/group.py | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/plone/api/group.py b/src/plone/api/group.py
index 40622c74..824529a4 100644
--- a/src/plone/api/group.py
+++ b/src/plone/api/group.py
@@ -88,6 +88,8 @@ def get_groups(username=None, user=None):
     group_tool = portal.get_tool('portal_groups')
 
     if user:
+        if not getattr(user, 'portal_groups', None):
+            return []
         groups = group_tool.getGroupsForPrincipal(user)
         return [get(groupname=group) for group in groups]