From 6653269427947d5b16870dd1276d175d32515717 Mon Sep 17 00:00:00 2001
From: mpeltriaux <michel.peltriaux@sgdnord.rlp.de>
Date: Wed, 22 Feb 2023 09:19:22 +0100
Subject: [PATCH] # Improve is_shared_with()

* improves central is_shared_with() method of ShareableObjectMixin to run ~30% faster
---
 konova/models/object.py | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/konova/models/object.py b/konova/models/object.py
index a1c8c9c2..90c2f23d 100644
--- a/konova/models/object.py
+++ b/konova/models/object.py
@@ -501,10 +501,13 @@ class ShareableObjectMixin(models.Model):
         Returns:
 
         """
-        directly_shared = self.shared_users.filter(id=user.id).exists()
-        team_shared = self.shared_teams.filter(
-            users__in=[user]
-        ).exists()
+        obj_shared_teams = self.shared_teams
+        obj_shared_users = self.shared_users
+        user_shared_teams = user.shared_teams
+
+        directly_shared = obj_shared_users.filter(id=user.id).exists()
+        team_shared = (obj_shared_teams & user_shared_teams).exists()
+
         is_shared = directly_shared or team_shared
         return is_shared