From 40fef906cdf67248fc98f1cf63ef216caead1d96 Mon Sep 17 00:00:00 2001
From: wangziqi <wangziqi@gongxue100.com>
Date: Thu, 9 Jul 2026 17:28:12 +0800
Subject: [PATCH] fix: resolve DingTalk dept ID to local department ID in class
 create

---
 apps/server/src/classes/classes.service.ts | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/apps/server/src/classes/classes.service.ts b/apps/server/src/classes/classes.service.ts
index 89b3799..c69c0f1 100644
--- a/apps/server/src/classes/classes.service.ts
+++ b/apps/server/src/classes/classes.service.ts
@@ -99,6 +99,22 @@ export class ClassesService {
   async create(dto: CreateClassDto) {
     const { studentIds, teachers, dingUserIds, ...classData } = dto;
 
+    // Resolve departmentId: frontend may pass DingTalk dept ID, map to local
+    if (classData.departmentId) {
+      const localDept = await this.deptRepo.findOne({
+        where: { source: 'dingtalk', sourceId: String(classData.departmentId) },
+      });
+      if (localDept) {
+        classData.departmentId = localDept.id;
+      } else {
+        // Verify it's a valid local department ID
+        const exists = await this.deptRepo.findOne({ where: { id: classData.departmentId } });
+        if (!exists) {
+          throw new BadRequestException(`部门 ID ${classData.departmentId} 不存在`);
+        }
+      }
+    }
+
     const cls = this.classRepo.create(classData);
     const saved = await this.classRepo.save(cls);