From a1973f2c1d93d3cc5f69aa51491e6495632e7d28 Mon Sep 17 00:00:00 2001
From: Qiang Xue <qiang.xue@gmail.com>
Date: Thu, 31 May 2012 18:25:08 -0400
Subject: [PATCH] fixed behavior detaching.

---
 framework/base/Component.php | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/framework/base/Component.php b/framework/base/Component.php
index f963fd8..4767803 100644
--- a/framework/base/Component.php
+++ b/framework/base/Component.php
@@ -416,6 +416,7 @@ class Component extends \yii\base\Object
 	 */
 	public function detachBehavior($name)
 	{
+		$this->ensureBehaviors();
 		if (isset($this->_b[$name])) {
 			$behavior = $this->_b[$name];
 			unset($this->_b[$name]);
@@ -432,12 +433,11 @@ class Component extends \yii\base\Object
 	public function detachBehaviors()
 	{
 		if ($this->_b !== null) {
-			$behaviors = $this->_b;
-			$this->_b = null;
-			foreach ($behaviors as $name => $behavior) {
+			foreach ($this->_b as $name => $behavior) {
 				$this->detachBehavior($name);
 			}
 		}
+		$this->_b = array();
 	}
 
 	/**