From 0c00bd05d3d2f0e1a6410ad91d7f94fb8640415b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E5=BC=A0=E5=AD=A6=E5=B3=B0?= <wb-zxf699644@alibaba-inc.com>
Date: Tue, 23 Aug 2022 10:40:22 +0800
Subject: [PATCH] fix: module tree for no data

---
 services/case_service.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/services/case_service.py b/services/case_service.py
index ac535ef..401159b 100644
--- a/services/case_service.py
+++ b/services/case_service.py
@@ -256,6 +256,9 @@ async def get_follow_module_tree(node_id):
         if result['parent'] not in module_tree:
             module_tree[result['parent']] = list()
         module_tree[result['parent']].append(result)
+    if len(module_tree) == 0:
+        root['children'] = []
+        return root, True
     __build_module_tree(module_tree[int(node_id)], module_tree)
     root['children'] = module_tree[int(node_id)]
     return root, True
-- 
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