From 3defa4931c43e2c90bf887793ed0d12da177a011 Mon Sep 17 00:00:00 2001
From: Andrew Short <andrewjshort@gmail.com>
Date: Sun, 11 Oct 2009 00:07:10 +0000
Subject: [PATCH] ENHANCEMENT: Added Hierachy->getAncestors() to return all the
 parent objects of the class in a DataObjectSet.

From: Andrew Short <andrewjshort@gmail.com>

git-svn-id: svn://svn.silverstripe.com/silverstripe/open/modules/sapphire/trunk@88488 467b73ca-7a2a-4603-9d3b-597d59a354a9
---
 core/model/Hierarchy.php | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)
 mode change 100644 => 100755 core/model/Hierarchy.php

diff --git a/core/model/Hierarchy.php b/core/model/Hierarchy.php
old mode 100644
new mode 100755
index dc4292037..f01eb1d03
--- a/core/model/Hierarchy.php
+++ b/core/model/Hierarchy.php
@@ -559,7 +559,23 @@ class Hierarchy extends DataObjectDecorator {
 			return DataObject::get_one($this->owner->class, $filter);
 		}
 	}
-
+	
+	/**
+	 * Return all the parents of this class in a set ordered from the lowest to highest parent.
+	 *
+	 * @return DataObjectSet
+	 */
+	public function getAncestors() {
+		$ancestors = new DataObjectSet();
+		$object    = $this->owner;
+		
+		while($object = $object->getParent()) {
+			$ancestors->push($object);
+		}
+		
+		return $ancestors;
+	}
+	
 	/**
 	 * Get the next node in the tree of the type. If there is no instance of the className descended from this node,
 	 * then search the parents.