From 455db3f91fcf05f821d582a25edf1eba120c6da7 Mon Sep 17 00:00:00 2001
From: optilude <optilude@3b4cdb85-528f-c531-b63d-5919d5b1aa08>
Date: Wed, 25 Mar 2009 04:36:10 +0000
Subject: [PATCH] Attempt to find user folder even if the context is not able
 to acquire it

git-svn-id: http://svn.plone.org/svn/plone/plone.principalsource/trunk@26129 3b4cdb85-528f-c531-b63d-5919d5b1aa08
---
 plone/principalsource/source.py | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/plone/principalsource/source.py b/plone/principalsource/source.py
index 6ad71db..81feb71 100644
--- a/plone/principalsource/source.py
+++ b/plone/principalsource/source.py
@@ -1,7 +1,11 @@
 from zope.interface import implements
-from z3c.formwidget.query.interfaces import IQuerySource
+from zope.app.component.hooks import getSite
 from zope.schema.interfaces import IContextSourceBinder
+
+from z3c.formwidget.query.interfaces import IQuerySource
+
 from plone.principalsource.term import PrincipalTerm
+
 from Products.CMFCore.utils import getToolByName
 
 class PrincipalSource(object):
@@ -27,7 +31,11 @@ class PrincipalSource(object):
         if not self.users and not self.groups:
             raise ValueError(u"You must enable either users or groups")
         
-        self.acl_users = getToolByName(context, 'acl_users')
+        self.acl_users = getToolByName(context, 'acl_users', None)
+        if self.acl_users is None:
+            site = getSite()
+            if site is not None:
+                self.acl_users = getToolByName(site, 'acl_users', None)
     
     def __contains__(self, value):
         try: