From a63dd8c4c3a8bbd37e18be880110321f426e9f11 Mon Sep 17 00:00:00 2001
From: haolou <haolou@mathmast.com>
Date: Fri, 31 Oct 2025 13:41:54 +0800
Subject: [PATCH] fix: fix the issue of nested field access

---
 backend/models/base_doc.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/backend/models/base_doc.py b/backend/models/base_doc.py
index 77fca47..37bc148 100644
--- a/backend/models/base_doc.py
+++ b/backend/models/base_doc.py
@@ -15,6 +15,10 @@ class QueryExpression:
     def __init__(self, field_name: str):
         self.field_name = field_name
 
+    def __getattr__(self, name: str) -> 'QueryExpression':
+        """Handle nested field access like FLID.identity"""
+        return QueryExpression(f"{self.field_name}.{name}")
+
     def __eq__(self, other: Any) -> Dict[str, Any]:
         """Handle field == value comparisons"""
         return {self.field_name: other}