From b377d97b805eed6cab95baaef6b106fca95a7e6e Mon Sep 17 00:00:00 2001
From: thinkphp <thinkphp@qq.com>
Date: Fri, 1 Apr 2016 14:01:15 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E6=AD=A3Model=E7=B1=BB?=
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---
 library/think/Model.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/library/think/Model.php b/library/think/Model.php
index 109b3aa28d..1385db6215 100644
--- a/library/think/Model.php
+++ b/library/think/Model.php
@@ -209,7 +209,7 @@ protected function _write_data($data, $type)
                 throw new Exception('invalid data');
             }
         }
-        if (!empty($this->duplicate) && 'update' == $type) {
+        if (isset($find) && !empty($this->duplicate) && 'update' == $type) {
             // 存在数据副本
             foreach ($data as $key => $val) {
                 // 去除相同数据
@@ -220,7 +220,7 @@ protected function _write_data($data, $type)
             if (empty($data)) {
                 // 没有数据变化
                 return [];
-            } elseif (!empty($find)) {
+            } else {
                 // 更新操作保留主键信息
                 $pk = $this->getPk();
                 if (is_array($pk)) {