updated digiserver 2

app/models/content.py

@@ -31,7 +31,12 @@ class Content(db.Model):
     uploaded_at = db.Column(db.DateTime, default=datetime.utcnow, 
                            nullable=False, index=True)
     
+    # Player relationship (for direct player assignment)
+    player_id = db.Column(db.Integer, db.ForeignKey('player.id', ondelete='CASCADE'), 
+                         nullable=True, index=True)
+    
     # Relationships
+    player = db.relationship('Player', back_populates='contents')
     groups = db.relationship('Group', secondary=group_content, 
                             back_populates='contents', lazy='dynamic')