From 80ea6df3675440b4120fe7a14693f42e7326027e Mon Sep 17 00:00:00 2001
From: Hanqing Sun <DefineFC@users.noreply.github.com>
Date: Sat, 29 Jul 2017 20:41:13 +0800
Subject: [PATCH] =?UTF-8?q?Collection::append()=20=E5=88=A4=E6=96=AD?=
 =?UTF-8?q?=E6=95=B0=E6=8D=AE=E6=98=AF=E5=90=A6=E5=AD=98=E5=9C=A8(null)?=
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调用collection()->append(['关联'=>['属性']])，如果遇到某个模型对象的关联查询到null，则append会导致null object错误
---
 library/think/model/Collection.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/library/think/model/Collection.php b/library/think/model/Collection.php
index 4e4bb4dc..e5f9ceec 100644
--- a/library/think/model/Collection.php
+++ b/library/think/model/Collection.php
@@ -85,7 +85,7 @@ class Collection extends BaseCollection
     {
         $this->each(function ($model) use ($append, $override) {
             /** @var Model $model */
-            $model->append($append, $override);
+            $model && $model->append($append, $override);
         });
         return $this;
     }