From f5b7eca9c75f525ae322b5c787aa008cd6e7a004 Mon Sep 17 00:00:00 2001
From: benedikt-bartscher
 <31854409+benedikt-bartscher@users.noreply.github.com>
Date: Fri, 8 Mar 2024 00:19:35 +0100
Subject: [PATCH] add support for sqlalchemy AssociationProxys (#2809)

* add support for sqlalchemy AssociationProxys

* python 3.8 compatibility
---
 reflex/utils/types.py | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/reflex/utils/types.py b/reflex/utils/types.py
index c290f7a64..4c3958bb0 100644
--- a/reflex/utils/types.py
+++ b/reflex/utils/types.py
@@ -23,6 +23,7 @@ from typing import (
 
 import sqlalchemy
 from pydantic.fields import ModelField
+from sqlalchemy.ext.associationproxy import AssociationProxyInstance
 from sqlalchemy.ext.hybrid import hybrid_property
 from sqlalchemy.orm import DeclarativeBase, Mapped, QueryableAttribute, Relationship
 
@@ -194,6 +195,13 @@ def get_attribute_access_type(cls: GenericType, name: str) -> GenericType | None
                 return List[class_]
             else:
                 return class_
+        if isinstance(attr, AssociationProxyInstance):
+            return List[
+                get_attribute_access_type(
+                    attr.target_class,
+                    attr.remote_attr.key,  # type: ignore[attr-defined]
+                )
+            ]
     elif isinstance(cls, type) and issubclass(cls, Model):
         # Check in the annotations directly (for sqlmodel.Relationship)
         hints = get_type_hints(cls)