Respect language headers on error 400/404/500 pages

src/pretix/base/views/errors.py

@@ -30,8 +30,16 @@ from django.utils.translation import gettext as _
 from django.views.decorators.csrf import requires_csrf_token
 from sentry_sdk import last_event_id
 
+from pretix.base.i18n import language
+from pretix.base.middleware import get_language_from_request
+
 
 def csrf_failure(request, reason=""):
+    try:
+        locale = get_language_from_request(request)
+    except:
+        locale = "en"
+    with language(locale):  # Middleware might not have run, need to do this manually
         t = get_template('csrffail.html')
         c = {
             'reason': reason,
@@ -61,6 +69,11 @@ def csrf_failure(request, reason=""):
 
 @requires_csrf_token
 def page_not_found(request, exception):
+    try:
+        locale = get_language_from_request(request)
+    except:
+        locale = "en"
+    with language(locale):  # Middleware might not have run, need to do this manually
         exception_repr = exception.__class__.__name__
         # Try to get an "interesting" exception message, if any (and not the ugly
         # Resolver404 dictionary)
@@ -84,6 +97,11 @@ def page_not_found(request, exception):
 
 @requires_csrf_token
 def server_error(request):
+    try:
+        locale = get_language_from_request(request)
+    except:
+        locale = "en"
+    with language(locale):  # Middleware might not have run, need to do this manually
         try:
             template = loader.get_template('500.html')
         except TemplateDoesNotExist: