Fix missing device_id attribution

api/views.py

@@ -29,6 +29,9 @@ class CustomAuthToken(APIView):
         if user is not None:
 
             if user.device_id is None or user.device_id == device_id:
+                user.device_id = device_id
+                user.save()
+
                 token, created = Token.objects.get_or_create(user=user)
                 return Response({'token': token.key})
             else: