From 7d51d62b2710bcf4e6bce3e6ba08032fd40d62d7 Mon Sep 17 00:00:00 2001
From: Matthias Erll <matthias.erll@redkubes.com>
Date: Tue, 13 Dec 2022 15:21:05 +0100
Subject: [PATCH] Added one-to-many joins, as there might be no match either

---
 sqlalchemy_filters/models.py | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/sqlalchemy_filters/models.py b/sqlalchemy_filters/models.py
index 49a737f..98ba7de 100644
--- a/sqlalchemy_filters/models.py
+++ b/sqlalchemy_filters/models.py
@@ -61,11 +61,12 @@ def should_filter_outer_join_relationship(operator):
 
 
 def should_sort_outer_join_relationship(models):
-    return any(
-        column.nullable
-        for rel_model in models
-        for column in rel_model.prop.local_columns
-    )
+    for rel_model in models:
+        if rel_model.prop.direction == symbol('ONETOMANY'):
+            return True
+        elif any(column.nullable for column in rel_model.prop.local_columns):
+            return True
+    return False
 
 
 def find_nested_relationship_model(mapper, field):