Fix profile model. Add OneToOne relation, fix image dir path

main/models.py

@@ -1,8 +1,10 @@
 import os
 
+from django.contrib.auth.models import User
 from django.db import models
 
 
 class UserProfile(models.Model):
+    user = models.OneToOneField(to=User, on_delete=models.CASCADE)
     role = models.IntegerField()
-    image = models.ImageField(upload_to=os.path.join('media', 'user_avatars'))
+    image = models.ImageField(upload_to='user_avatars')