From c9f9b4e344b2f4eac1c9052c7130c1a859b930e0 Mon Sep 17 00:00:00 2001
From: "XPS\\Micro" <Rainer Wieland>
Date: Sun, 8 Feb 2026 17:54:35 +0100
Subject: [PATCH] fix: Add explicit foreign_keys to User.containers
 relationship
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SQLAlchemy konnte nicht bestimmen welcher FK gemeint ist, da UserContainer
zwei FKs zu User hat (user_id und blocked_by).

Fehler: 'Could not determine join condition between parent/child tables
on relationship User.containers - there are multiple foreign key paths'

Lösung: foreign_keys=[user_id] explizit angeben.
---
 models.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/models.py b/models.py
index 39900c7..42d083a 100644
--- a/models.py
+++ b/models.py
@@ -149,7 +149,7 @@ class UserContainer(db.Model):
     blocked_by = db.Column(db.Integer, db.ForeignKey('user.id', ondelete='SET NULL'), nullable=True)
 
     # Relationships
-    user = db.relationship('User', back_populates='containers')
+    user = db.relationship('User', foreign_keys=[user_id], back_populates='containers')
     blocker = db.relationship('User', foreign_keys=[blocked_by])
 
     # Unique: Ein User kann nur einen Container pro Typ haben