diff --git a/src/wuttaweb/grids/base.py b/src/wuttaweb/grids/base.py
index 1d99a9f..077f51a 100644
--- a/src/wuttaweb/grids/base.py
+++ b/src/wuttaweb/grids/base.py
@@ -2415,6 +2415,15 @@ class Grid:  # pylint: disable=too-many-instance-attributes,too-many-public-meth
         except TypeError:
             dct = dict(obj.__dict__)
             dct.pop("_sa_instance_state", None)
+
+        # nb. inject association proxy(-like) fields if applicable
+        for field in self.columns:
+            if field not in dct:
+                try:
+                    dct[field] = getattr(obj, field)
+                except AttributeError:
+                    pass
+
         return dct
 
     def get_vue_context(self):
diff --git a/tests/grids/test_base.py b/tests/grids/test_base.py
index d98282f..89c0f50 100644
--- a/tests/grids/test_base.py
+++ b/tests/grids/test_base.py
@@ -1923,10 +1923,24 @@ class TestGrid(WebTestCase):
             def __init__(self, **kw):
                 self.__dict__.update(kw)
 
+            def __getattr__(self, name):
+                if name == "something":
+                    return "else"
+                raise AttributeError(f"attr not found: {name}")
+
         mock = MockSetting(**setting)
         dct = grid.object_to_dict(mock)
         self.assertIsInstance(dct, dict)
         self.assertEqual(dct, setting)
+        self.assertNotIn("something", dct)
+
+        # test (mock) association proxy behavior
+        grid.columns.append("something")
+        grid.columns.append("another")
+        dct = grid.object_to_dict(mock)
+        self.assertIn("something", dct)
+        self.assertEqual(dct["something"], "else")
+        self.assertNotIn("another", dct)
 
     def test_get_vue_context(self):