From 172a9f19b3946011927a5527467e598476b41084 Mon Sep 17 00:00:00 2001
From: Carsten Brandt <mail@cebe.cc>
Date: Wed, 25 Sep 2013 12:36:24 +0200
Subject: [PATCH] apply changes to db\AR -> redis\AR

---
 framework/yii/redis/ActiveRelation.php | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/framework/yii/redis/ActiveRelation.php b/framework/yii/redis/ActiveRelation.php
index ab4fd37..ed730d5 100644
--- a/framework/yii/redis/ActiveRelation.php
+++ b/framework/yii/redis/ActiveRelation.php
@@ -254,7 +254,9 @@ class ActiveRelation extends ActiveQuery
 			// single key
 			$attribute = reset($this->link);
 			foreach ($models as $model) {
-				$values[] = $model[$attribute];
+				if (($value = $model[$attribute]) !== null) {
+					$values[] = $value;
+				}
 			}
 		} else {
 			// composite keys