From 3774e3451aa483247366460e6fa76b0d58937499 Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Wed, 4 May 2016 18:50:03 +0800
Subject: [PATCH] =?UTF-8?q?=E6=94=B9=E8=BF=9BModel=E7=B1=BB=E7=9A=84save?=
 =?UTF-8?q?=E6=96=B9=E6=B3=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 library/think/Model.php | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/library/think/Model.php b/library/think/Model.php
index ae100d17..46df0a68 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -263,13 +263,14 @@ abstract class Model implements \JsonSerializable, \ArrayAccess
             }
 
             // 去除没有更新的字段
+            $data = [];
             foreach ($this->data as $key => $val) {
-                if (!in_array($key, $this->change) && !$this->isPk($key)) {
-                    unset($this->data[$key]);
+                if (in_array($key, $this->change) || $this->isPk($key)) {
+                    $data[$key] = $val;
                 }
             }
 
-            $result = self::db()->where($where)->update($this->data);
+            $result = self::db()->where($where)->update($data);
 
             // 更新回调
             $this->trigger('after_update', $this);