From 1326782a8dae261a056166c5e64648f82a582f1c Mon Sep 17 00:00:00 2001
From: airyland <airyland@qq.com>
Date: Sat, 30 Sep 2017 22:39:36 +0800
Subject: [PATCH] qrcode: fix errors when value is undefined (fix #2070)

---
 src/components/qrcode/index.vue | 4 ++++
 src/components/qrcode/metas.yml | 5 +++++
 2 files changed, 9 insertions(+)

diff --git a/src/components/qrcode/index.vue b/src/components/qrcode/index.vue
index 4cb428d26..67ca9d15d 100755
--- a/src/components/qrcode/index.vue
+++ b/src/components/qrcode/index.vue
@@ -66,6 +66,10 @@ export default {
   },
   methods: {
     render () {
+      if (typeof this.value === 'undefined') {
+        return
+      }
+
       const qrcode = new QRCodeImpl(-1, ErrorCorrectLevel[this.level])
       qrcode.addData(this.value)
       qrcode.make()
diff --git a/src/components/qrcode/metas.yml b/src/components/qrcode/metas.yml
index d13086ac5..ae5555e15 100755
--- a/src/components/qrcode/metas.yml
+++ b/src/components/qrcode/metas.yml
@@ -30,6 +30,11 @@ props:
     en: 'render type, can be `img` or `canvas`'
     zh-CN: '渲染类型，可以为`img`(适合需要在微信需要长按识别的场景)和`canvas`'
 changes:
+  next:
+    en:
+      - '[fix] fix errors when value is undefined #2070'
+    zh-CN:
+      - '[fix] 修复 value 为 undefined 时报错的问题 #2070'
   v2.1.0-rc.47:
     zh-CN:
       - '[feature] 支持渲染类型为图片 #900 @keepgoingwm'
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