From 2eaa6c3069ccab647b733552508ff5937665c66b Mon Sep 17 00:00:00 2001
From: Richard Schreiber <schreiber@pretix.eu>
Date: Wed, 11 Feb 2026 13:22:15 +0100
Subject: [PATCH] Fix address-helper wrong locale (Z#23223920) (#5884)

* Fix address-helper wrong locale (Z#23223920)

* fix translation for transmission-types names

* use language_code instead
---
 src/pretix/base/views/js_helpers.py               | 15 ++++++++++++++-
 .../pretixpresale/event/checkout_questions.html   |  2 +-
 .../pretixpresale/event/order_modify.html         |  2 +-
 3 files changed, 16 insertions(+), 3 deletions(-)

diff --git a/src/pretix/base/views/js_helpers.py b/src/pretix/base/views/js_helpers.py
index b3cd198d5..16dfef2b5 100644
--- a/src/pretix/base/views/js_helpers.py
+++ b/src/pretix/base/views/js_helpers.py
@@ -20,6 +20,7 @@
 # <https://www.gnu.org/licenses/>.
 #
 import pycountry
+from django.conf import settings
 from django.http import JsonResponse
 from django.shortcuts import get_object_or_404
 from django.utils.translation import gettext, pgettext, pgettext_lazy
@@ -29,6 +30,7 @@ from django_scopes import scope
 from pretix.base.addressvalidation import (
     COUNTRIES_WITH_STREET_ZIPCODE_AND_CITY_REQUIRED,
 )
+from pretix.base.i18n import language
 from pretix.base.invoicing.transmission import get_transmission_types
 from pretix.base.models import Organizer
 from pretix.base.models.tax import VAT_ID_COUNTRIES
@@ -89,7 +91,7 @@ def _info(cc):
     }
 
 
-def address_form(request):
+def _address_form(request):
     cc = request.GET.get("country", "DE")
     info = _info(cc)
 
@@ -157,4 +159,15 @@ def address_form(request):
                 # The help text explains that it is optional, so we want to hide that if it is required
                 info["vat_id"]["helptext_visible"] = False
 
+    return info
+
+
+def address_form(request):
+    locale = request.GET.get('locale')
+    if locale in dict(settings.LANGUAGES):
+        with language(locale):
+            info = _address_form(request)
+    else:
+        info = _address_form(request)
+
     return JsonResponse(info)
diff --git a/src/pretix/presale/templates/pretixpresale/event/checkout_questions.html b/src/pretix/presale/templates/pretixpresale/event/checkout_questions.html
index b2b149766..d69c6bea4 100644
--- a/src/pretix/presale/templates/pretixpresale/event/checkout_questions.html
+++ b/src/pretix/presale/templates/pretixpresale/event/checkout_questions.html
@@ -42,7 +42,7 @@
                     {% endif %}
                     <div id="invoice" class="profile-scope"
                          data-profiles-id="addresses_json"
-                         data-address-information-url="{% url "js_helpers.address_form" %}?invoice=true&organizer={{ event.organizer.slug|urlencode }}&event={{ event.slug|urlencode }}">
+                         data-address-information-url="{% url "js_helpers.address_form" %}?invoice=true&amp;organizer={{ event.organizer.slug|urlencode }}&amp;event={{ event.slug|urlencode }}&amp;locale={{ request.LANGUAGE_CODE }}">
                         <div class="panel-body">
                             {% if addresses_data %}
                                 <div class="form-group profile-select-container js-do-not-copy-answers">
diff --git a/src/pretix/presale/templates/pretixpresale/event/order_modify.html b/src/pretix/presale/templates/pretixpresale/event/order_modify.html
index 02d08304c..11ceb9c3c 100644
--- a/src/pretix/presale/templates/pretixpresale/event/order_modify.html
+++ b/src/pretix/presale/templates/pretixpresale/event/order_modify.html
@@ -36,7 +36,7 @@
                         </h4>
                     </summary>
                     <div id="invoice" class="panel-collapse"
-                         data-address-information-url="{% url "js_helpers.address_form" %}?invoice=true&organizer={{ event.organizer.slug|urlencode }}&event={{ event.slug|urlencode }}">
+                         data-address-information-url="{% url "js_helpers.address_form" %}?invoice=true&amp;organizer={{ event.organizer.slug|urlencode }}&amp;event={{ event.slug|urlencode }}&amp;locale={{ request.LANGUAGE_CODE }}">
                         <div class="panel-body">
                             {% if event.settings.invoice_address_explanation_text %}
                                 <div>