mobile app apply_contest contest_detail contest_edit notifications theme

app.py

@@ -914,6 +914,12 @@ def api_change_name():
 @login_required
 def apply_contest():
     if request.method == 'POST':
+        user_id = session['user']['id']
+        # 防止重复提交：如果已有 pending 状态的申请，不允许再提交
+        existing = ContestApplication.query.filter_by(user_id=user_id, status='pending').first()
+        if existing:
+            flash('您已有一个待审核的杯赛申请，请等待审核结果后再提交新申请')
+            return redirect(url_for('contest_list'))
         name = request.form.get('name')
         organizer = request.form.get('organizer')
         description = request.form.get('description')
@@ -1136,6 +1142,19 @@ def api_mark_all_notifications_read():
     db.session.commit()
     return jsonify({'success': True})
 
+@app.route('/api/notifications/<int:nid>', methods=['DELETE'])
+@login_required
+def api_delete_notification(nid):
+    """删除单条通知（仅管理员可删除已处理的通知）"""
+    n = Notification.query.get_or_404(nid)
+    if n.user_id != session['user']['id']:
+        return jsonify({'success': False, 'message': '无权操作'}), 403
+    if session['user'].get('role') != 'admin':
+        return jsonify({'success': False, 'message': '仅管理员可删除通知'}), 403
+    db.session.delete(n)
+    db.session.commit()
+    return jsonify({'success': True})
+
 @app.route('/notifications')
 @login_required
 def notifications_page():