From 8ffa78ad19e6fdbfddbf37b08fbb36d32586afd7 Mon Sep 17 00:00:00 2001
From: Nick Hall <nick__hall@hotmail.com>
Date: Tue, 15 Jul 2014 19:37:04 +0100
Subject: [PATCH] 7915: Prevent user creating a cycle in the place hierarchy

---
 gramps/gui/editors/editplaceref.py | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/gramps/gui/editors/editplaceref.py b/gramps/gui/editors/editplaceref.py
index 58481bfc8..03aeeb92f 100644
--- a/gramps/gui/editors/editplaceref.py
+++ b/gramps/gui/editors/editplaceref.py
@@ -74,9 +74,10 @@ class EditPlaceRef(EditSecondary):
         skip = [handle]
         while todo:
             handle = todo.pop()
-            for child in self.dbstate.db.find_place_child_handles(handle):
-                todo.append(child)
-                skip.append(child)
+            for child in self.db.find_backlink_handles(handle, ['Place']):
+                if child[1] not in skip:
+                    todo.append(child[1])
+                    skip.append(child[1])
         return skip
 
     def select_parent(self, button):