profiles: use of OneToOneField to access profile through user

profiles/models.py

@@ -2,7 +2,7 @@ from __future__ import annotations
 from os.path import splitext
 
 from django.contrib.auth.models import User
-from django.db.models import Q, Model, CASCADE, ForeignKey, ImageField
+from django.db.models import Q, Model, CASCADE, ForeignKey, ImageField, OneToOneField
 from django.db.models.signals import post_save, pre_delete
 from django.dispatch import receiver
 
@@ -10,8 +10,9 @@ from django.dispatch import receiver
 def upload_to(instance, filename: str):
     return f"./profiles/static/avatars/{instance.pk}{splitext(filename)[1]}"
 
+
 class ProfileModel(Model):
-    user = ForeignKey(User, on_delete=CASCADE)
+    user = OneToOneField(User, on_delete=CASCADE)
     avatar = ImageField(upload_to=upload_to, default="./profiles/static/avatars/default.avif")
 
     def get_game(self) -> int: