Localize ical attachments (Z#23227987)

src/pretix/base/services/mail.py

@@ -512,16 +512,17 @@ def mail_send_task(self, **kwargs) -> bool:
 
         # Attach calendar files
         if outgoing_mail.should_attach_ical and outgoing_mail.order:
-            fname = re.sub('[^a-zA-Z0-9 ]', '-', unidecode(pgettext('attachment_filename', 'Calendar invite')))
-            icals = get_private_icals(
-                outgoing_mail.event,
-                [outgoing_mail.orderposition] if outgoing_mail.orderposition else outgoing_mail.order.positions.all()
-            )
-            for i, cal in enumerate(icals):
-                name = '{}{}.ics'.format(fname, f'-{i + 1}' if i > 0 else '')
-                content = cal.serialize()
-                mimetype = 'text/calendar'
-                email.attach(name, content, mimetype)
+            with language(outgoing_mail.order.locale, outgoing_mail.event.settings.region):
+                fname = re.sub('[^a-zA-Z0-9 ]', '-', unidecode(pgettext('attachment_filename', 'Calendar invite')))
+                icals = get_private_icals(
+                    outgoing_mail.event,
+                    [outgoing_mail.orderposition] if outgoing_mail.orderposition else outgoing_mail.order.positions.all()
+                )
+                for i, cal in enumerate(icals):
+                    name = '{}{}.ics'.format(fname, f'-{i + 1}' if i > 0 else '')
+                    content = cal.serialize()
+                    mimetype = 'text/calendar'
+                    email.attach(name, content, mimetype)
 
         invoices_to_mark_transmitted = []
         for inv in outgoing_mail.should_attach_invoices.all():

src/tests/base/test_mail.py

@@ -562,3 +562,32 @@ def test_escaped_braces_mail_services(env):
     for part in (html, plain, djmail.outbox[0].subject):
         assert "EUR" not in part
         assert "-{currency}-" in part
+
+
+@pytest.mark.django_db
+def test_attached_ical_localization(env, order):
+    event, _, _ = env
+
+    descriptions = {"de": "german description", "en": "english description"}
+    event.settings.mail_attach_ical_description = LazyI18nString(descriptions)
+    event.settings.mail_attach_ical = True
+    event.settings.mail_attach_ical_paid_only = False
+
+    for locale, description in descriptions.items():
+        order.locale = locale
+        order.save()
+
+        djmail.outbox = []
+
+        mail(
+            "dummy@dummy.dummy",
+            "",
+            LazyI18nString(""),
+            event=event,
+            order=order,
+            attach_ical=True
+        )
+
+        assert len(djmail.outbox) == 1
+        assert len(djmail.outbox[0].attachments) == 1
+        assert description in djmail.outbox[0].attachments[0][1]