From: shamoon <4887959+shamoon@users.noreply.github.com>
Date: Mon, 15 Jan 2024 22:06:59 +0000 (-0800)
Subject: Fix shared by me filter with multiple users / groups in postgres (#5396)
X-Git-Tag: v2.4.0~20
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=783090c2cd5311b779e6b61fa1d2a328323b57f5;p=thirdparty%2Fpaperless-ngx.git

Fix shared by me filter with multiple users / groups in postgres (#5396)
---

diff --git a/src/documents/filters.py b/src/documents/filters.py
index bab20a4dc0..b760b97795 100644
--- a/src/documents/filters.py
+++ b/src/documents/filters.py
@@ -114,6 +114,8 @@ class SharedByUser(Filter):
         ctype = ContentType.objects.get_for_model(self.model)
         UserObjectPermission = get_user_obj_perms_model()
         GroupObjectPermission = get_group_obj_perms_model()
+        # see https://github.com/paperless-ngx/paperless-ngx/issues/5392, we limit subqueries
+        # to 1 because Postgres doesn't like returning > 1 row, but all we care about is > 0
         return (
             qs.filter(
                 owner_id=value,
@@ -123,7 +125,7 @@ class SharedByUser(Filter):
                     UserObjectPermission.objects.filter(
                         content_type=ctype,
                         object_pk=Cast(OuterRef("pk"), CharField()),
-                    ).values("user_id"),
+                    ).values("user_id")[:1],
                 ),
             )
             .annotate(
@@ -131,7 +133,7 @@ class SharedByUser(Filter):
                     GroupObjectPermission.objects.filter(
                         content_type=ctype,
                         object_pk=Cast(OuterRef("pk"), CharField()),
-                    ).values("group_id"),
+                    ).values("group_id")[:1],
                 ),
             )
             .filter(