From 8a883ad8867a11faadf2b24b2d013cd681510736 Mon Sep 17 00:00:00 2001
From: "XPS\\Micro" <Rainer Wieland>
Date: Sun, 8 Feb 2026 18:33:48 +0100
Subject: [PATCH] fix: Add explicit primaryjoin to User.containers relationship

SQLAlchemy kann nicht automatisch bestimmen, welcher Join gemeint ist,
weil es 2 FKs zwischen user und user_container gibt (user_id und blocked_by).
---
 models.py | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/models.py b/models.py
index e690c37..95eafcb 100644
--- a/models.py
+++ b/models.py
@@ -37,8 +37,12 @@ class User(UserMixin, db.Model):
     # Beziehung fuer blocked_by
     blocker = db.relationship('User', remote_side=[id], foreign_keys=[blocked_by])
 
-    # Multi-Container Support
-    containers = db.relationship('UserContainer', foreign_keys='UserContainer.user_id', back_populates='user', cascade='all, delete-orphan')
+    # Multi-Container Support (explicit primaryjoin wegen mehrerer FKs zu User)
+    containers = db.relationship('UserContainer',
+                                foreign_keys='UserContainer.user_id',
+                                primaryjoin='User.id==UserContainer.user_id',
+                                back_populates='user',
+                                cascade='all, delete-orphan')
 
     @property
     def container_id(self):