Wrap helper and token creation in transaction

shiftregister/app/views.py

@@ -1,5 +1,6 @@
 from django.shortcuts import render, redirect, get_object_or_404
 from .models import Shift, LoginToken, Helper, ShiftRegistration
+from django.db import transaction
 from django.db.models import F, Count, Q, ExpressionWrapper
 from .forms import RegisterForm, EmptyForm
 from django.db.models.fields import DateTimeField
@@ -118,8 +119,10 @@ def register(request):
         helper = Helper(
             name=form.cleaned_data["name"], phone=form.cleaned_data["phone"]
         )
-        helper.save()
-        token = helper.send_confirmation()
+        with transaction.atomic():
+            helper.save()
+            token = helper.send_confirmation()
+
         request.session["token"] = token.pk
         if settings.DEBUG:
             messages.add_message(