v0.7测试

backend/models/conduct.py

@@ -84,6 +84,12 @@ class ConductModel:
         end_date: str = None
     ) -> List[Dict[str, Any]]:
         """获取所有记录（班主任/班长专用）"""
+        # 空字符串转为None
+        if start_date == "":
+            start_date = None
+        if end_date == "":
+            end_date = None
+        
         sql = """
             SELECT cr.*, s.name as student_name, s.student_no, u.real_name as recorder_name
             FROM conduct_records cr