From 3bb81a5dcf6c2ebd5fa729d6e9ee1818eadf8c30 Mon Sep 17 00:00:00 2001
From: 1degrees <1103085816@qq.com>
Date: Sun, 27 Apr 2025 19:32:37 +0800
Subject: [PATCH] fix: Block Preview Error

---
 packages/canvas/render/src/material-function/page-getter.ts | 2 +-
 packages/design-core/src/preview/src/preview/Preview.vue    | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/packages/canvas/render/src/material-function/page-getter.ts b/packages/canvas/render/src/material-function/page-getter.ts
index 520b577a25..5f9d7ee615 100644
--- a/packages/canvas/render/src/material-function/page-getter.ts
+++ b/packages/canvas/render/src/material-function/page-getter.ts
@@ -88,6 +88,6 @@ export async function getPageAncestors(pageId?: string) {
     // 如果不支持查询祖先 则返回自己
     return [pageId]
   }
-  const pageChain = await getController().getPageAncestors(pageId)
+  const pageChain = (await getController().getPageAncestors(pageId)) || []
   return [...pageChain.map((id: number | string) => String(id)), pageId]
 }
diff --git a/packages/design-core/src/preview/src/preview/Preview.vue b/packages/design-core/src/preview/src/preview/Preview.vue
index 1df8775a66..dca754eb6e 100644
--- a/packages/design-core/src/preview/src/preview/Preview.vue
+++ b/packages/design-core/src/preview/src/preview/Preview.vue
@@ -132,7 +132,7 @@ export default {
       return familyPages
     }
 
-    const genAllBlocks = async (ancestors) => {
+    const genAllBlocks = async (ancestors = []) => {
       // blockSet 是为了防止重复出码同样的区块，同名区块只出码一遍
       const blockSet = new Set()
       const promises = ancestors.map((item) => getAllNestedBlocksSchema(item.page_content, fetchBlockSchema, blockSet))