From 647a80278277ba3bf3cc0f4dc19cdc44f88d8ae2 Mon Sep 17 00:00:00 2001
From: Qiang Xue <qiang.xue@gmail.com>
Date: Mon, 6 May 2013 20:33:03 -0300
Subject: [PATCH] Added dirty attribute description.

---
 docs/guide/upgrade-from-v1.md | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/docs/guide/upgrade-from-v1.md b/docs/guide/upgrade-from-v1.md
index 5da5254..3b24201 100644
--- a/docs/guide/upgrade-from-v1.md
+++ b/docs/guide/upgrade-from-v1.md
@@ -377,6 +377,11 @@ $customers = Customer::find()->asArray()->all();
 ~~~
 
 
+By default, ActiveRecord now only saves dirty attributes. In 1.1, all attributes
+would be saved to database when you call `save()`, regardless they are changed or not,
+unless you explicitly list the attributes to save.
+
+
 Auto-quoting Table and Column Names
 ------------------------------------