From 1fc50e818836466d28b38acf4a81f7e27af3c3c8 Mon Sep 17 00:00:00 2001
From: qiang <guoshengqiang@live.com>
Date: Tue, 6 Jul 2021 20:35:37 +0800
Subject: [PATCH] fix(mp-baidu): pageinstance

---
 src/platforms/mp-baidu/runtime/wrapper/component-parser.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/platforms/mp-baidu/runtime/wrapper/component-parser.js b/src/platforms/mp-baidu/runtime/wrapper/component-parser.js
index ab57a3f8f..a9740face 100644
--- a/src/platforms/mp-baidu/runtime/wrapper/component-parser.js
+++ b/src/platforms/mp-baidu/runtime/wrapper/component-parser.js
@@ -32,6 +32,12 @@ export default function parseComponent (vueOptions) {
   const oldAttached = componentOptions.lifetimes.attached
   // 百度小程序基础库 3.260 以上支持页面 onInit 生命周期，提前创建 vm 实例
   componentOptions.lifetimes.onInit = function onInit (query) {
+    // 百度小程序后续可能移除 pageinstance 属性，为向后兼容进行补充
+    if (!this.pageinstance || !this.pageinstance.setData) {
+      const pages = getCurrentPages()
+      this.pageinstance = pages[pages.length - 1]
+    }
+
     // 处理百度小程序 onInit 生命周期调用 setData 无效的问题
     const setData = this.setData
     const setDataArgs = []
-- 
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