From ee93e114f9d98ab8aa07b68385883c478cd44f16 Mon Sep 17 00:00:00 2001
From: qiang <guoshengqiang@live.com>
Date: Thu, 8 Apr 2021 18:07:48 +0800
Subject: [PATCH] =?UTF-8?q?fix(mp-alipay):=20=E4=BF=AE=E5=A4=8D=E6=94=AF?=
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---
 .../__tests__/compiler-mp-alipay.spec.js                    | 6 ++++++
 packages/uni-template-compiler/lib/template/traverse.js     | 4 ++++
 2 files changed, 10 insertions(+)

diff --git a/packages/uni-template-compiler/__tests__/compiler-mp-alipay.spec.js b/packages/uni-template-compiler/__tests__/compiler-mp-alipay.spec.js
index d31ab3f31..4541914ab 100644
--- a/packages/uni-template-compiler/__tests__/compiler-mp-alipay.spec.js
+++ b/packages/uni-template-compiler/__tests__/compiler-mp-alipay.spec.js
@@ -55,6 +55,12 @@ describe('mp:compiler-mp-alipay', () => {
       }
     )
   })
+  it('generate slot fallback content', () => {
+    assertCodegen(
+      '<view><slot>slot</slot></view>',
+      '<view><block a:if="{{$slots.$default}}"><slot></slot></block><block a:else>slot</block></view>'
+    )
+  })
   it('generate default slot', () => {
     assertCodegen(
       '<component1>text</component1>',
diff --git a/packages/uni-template-compiler/lib/template/traverse.js b/packages/uni-template-compiler/lib/template/traverse.js
index 4107551fe..ae1c59ce7 100644
--- a/packages/uni-template-compiler/lib/template/traverse.js
+++ b/packages/uni-template-compiler/lib/template/traverse.js
@@ -273,6 +273,10 @@ function genSlotNode (slotName, slotNode, fallbackNodes, state) {
   if (!fallbackNodes || t.isNullLiteral(fallbackNodes)) {
     return slotNode
   }
+  // 支付宝小程序默认插槽为 $default
+  if (state.options.platform.name === 'mp-alipay') {
+    slotName = slotName === 'default' ? '$default' : slotName
+  }
   const prefix = state.options.platform.directive
   return [{
     type: 'block',
-- 
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