From 7942c4112fcdcadf358a7bc76de1a2a1accd3367 Mon Sep 17 00:00:00 2001
From: Raphael Michel <michel@rami.io>
Date: Tue, 20 Apr 2021 19:04:29 +0200
Subject: [PATCH] AsyncFormView: Pass locale and timezone to task

---
 src/pretix/base/views/tasks.py | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/pretix/base/views/tasks.py b/src/pretix/base/views/tasks.py
index adf5c0476e..c34d2c05d0 100644
--- a/src/pretix/base/views/tasks.py
+++ b/src/pretix/base/views/tasks.py
@@ -22,6 +22,7 @@
 import logging
 
 import celery.exceptions
+import pytz
 from celery.result import AsyncResult
 from django.conf import settings
 from django.contrib import messages
@@ -29,7 +30,9 @@ from django.core.exceptions import ValidationError
 from django.http import JsonResponse
 from django.shortcuts import redirect, render
 from django.test import RequestFactory
-from django.utils.translation import gettext as _
+from django.utils import timezone, translation
+from django.utils.timezone import get_current_timezone
+from django.utils.translation import get_language, gettext as _
 from django.views.generic import FormView
 
 from pretix.base.models import User
@@ -201,7 +204,7 @@ class AsyncFormView(AsyncMixin, FormView):
     known_errortypes = ['ValidationError']
 
     def __init_subclass__(cls):
-        def async_execute(self, request_path, form_kwargs, organizer=None, event=None, user=None):
+        def async_execute(self, *, request_path, form_kwargs, locale, tz, organizer=None, event=None, user=None):
             view_instance = cls()
             view_instance.request = RequestFactory().post(request_path)
             if organizer:
@@ -218,7 +221,8 @@ class AsyncFormView(AsyncMixin, FormView):
             form_kwargs = view_instance.get_async_form_kwargs(form_kwargs, organizer, event)
 
             form = form_class(**form_kwargs)
-            return view_instance.async_form_valid(self, form)
+            with translation.override(locale), timezone.override(pytz.timezone(tz)):
+                return view_instance.async_form_valid(self, form)
 
         cls.async_execute = app.task(
             base=ProfiledEventTask,
@@ -253,6 +257,8 @@ class AsyncFormView(AsyncMixin, FormView):
         kwargs = {
             'request_path': self.request.path,
             'form_kwargs': form_kwargs,
+            'locale': get_language(),
+            'tz': get_current_timezone().zone,
         }
         if hasattr(self.request, 'organizer'):
             kwargs['organizer'] = self.request.organizer.pk