From a41cf18c23bc564bbc4bb5d6ee37ed166e4431be Mon Sep 17 00:00:00 2001
From: Saophalkun Ponlu <phalkunz@silverstripe.com>
Date: Tue, 28 Jul 2009 05:33:22 +0000
Subject: [PATCH] BUGFIX: trackbackping generated an exception.
 getExtensionInstance returns an instance with NULL owner so
 TrackBackDecorator->owner->ID was always unavailable

---
 code/BlogEntry.php          | 4 ++--
 code/TrackBackDecorator.php | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/code/BlogEntry.php b/code/BlogEntry.php
index c2fbf8e..dc70217 100644
--- a/code/BlogEntry.php
+++ b/code/BlogEntry.php
@@ -160,8 +160,8 @@ class BlogEntry extends Page {
 	}
 	
 	function trackbackping() {
-		if($this->TrackBacksEnabled()) {
-			return $this->extInstance('TrackBackDecorator')->trackbackping();
+		if($this->TrackBacksEnabled() && $this->hasExtension('TrackBackDecorator')) {
+			return $this->decoratedTrackbackping();
 		} else {
 			Director::redirect($this->Link());
 		}
diff --git a/code/TrackBackDecorator.php b/code/TrackBackDecorator.php
index abe6bca..73c1a1d 100644
--- a/code/TrackBackDecorator.php
+++ b/code/TrackBackDecorator.php
@@ -17,7 +17,7 @@ class TrackBackDecorator extends DataObjectDecorator {
 		return $this->owner->AbsoluteLink() . 'trackbackping';
 	}
 	
-	function trackbackping() {
+	function decoratedTrackbackping() {
 		$error = 0;
 		$message = '';