From 1084388fecf0abf89349f8cab736131307791952 Mon Sep 17 00:00:00 2001
From: Yuzhiran Dev <dev@yuzhiran.com>
Date: Mon, 1 Jun 2026 12:08:51 +0800
Subject: [PATCH] =?UTF-8?q?fix(topics):=20=E5=A4=96=E9=94=AE=E7=BA=A6?=
 =?UTF-8?q?=E6=9D=9F=E5=AF=BC=E8=87=B4=20delete=20400?=
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选题有关联 content_tasks/article/publish_record/metrics 表，
外键约束阻止删除。改为先级联删除关联数据再删选题。

前端同时显示服务端返回的具体错误信息，而不是笼统的 删除失败。
---
 platform/backend/app/api/topics.py | 8 +++++++-
 platform/frontend/topics.html      | 8 ++++++--
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/platform/backend/app/api/topics.py b/platform/backend/app/api/topics.py
index 50c4067..dad7e35 100644
--- a/platform/backend/app/api/topics.py
+++ b/platform/backend/app/api/topics.py
@@ -189,13 +189,19 @@ def delete_topic(
     if not topic:
         raise HTTPException(status_code=404, detail="Topic not found")
     _check_org(topic, current_user, db)
+    from ..models import ContentTask, Article, PublishRecord, ContentMetrics, ContentCalendar
     try:
+        db.query(ContentCalendar).filter(ContentCalendar.topic_id == topic_id).delete()
+        db.query(ContentTask).filter(ContentTask.topic_id == topic_id).delete()
+        db.query(Article).filter(Article.topic_id == topic_id).delete()
+        db.query(PublishRecord).filter(PublishRecord.topic_id == topic_id).delete()
+        db.query(ContentMetrics).filter(ContentMetrics.topic_id == topic_id).delete()
         db.delete(topic)
         db.commit()
         return {"ok": True}
     except Exception as e:
         db.rollback()
-        raise HTTPException(status_code=400, detail=f"删除失败：该选题有关联数据（文章/发布记录等），请先删除关联数据。{str(e)}")
+        raise HTTPException(status_code=400, detail=f"删除失败：{str(e)}")
 
 
 @router.post("/{topic_id}/score")
diff --git a/platform/frontend/topics.html b/platform/frontend/topics.html
index 66c3428..09b6482 100644
--- a/platform/frontend/topics.html
+++ b/platform/frontend/topics.html
@@ -547,12 +547,16 @@ const TopicsApp = {
         },
         async deleteTopic(id) {
             try {
-                await this.$confirm('确定删除？', '提示', { type: 'warning' });
+                await this.$confirm('确定删除选题 ' + id + '？将同时删除相关文章、发布记录等关联数据。', '提示', { type: 'warning' });
                 await this.api('/api/topics/' + id, { method: 'DELETE' });
                 this.$message.success('删除成功');
                 await this.fetchTopics();
                 await this.fetchTodayCount();
-            } catch (e) { if (e !== 'cancel') this.$message.error('删除失败'); }
+            } catch (e) {
+                if (e === 'cancel') return;
+                const msg = e?.response?.data?.detail || e?.message || '未知错误';
+                this.$message.error('删除失败: ' + msg);
+            }
         },
         switchPlatform(platform) {
             if (this.editing) this.cancelEdit();