pretalx-musicrate/pretalx_musicrate/urls.py

from django.urls import re_path
from pretalx.event.models.event import SLUG_REGEX

from .views import MusicrateSettingsView

urlpatterns = [
    re_path(
        rf"^orga/event/(?P<event>{SLUG_REGEX})/settings/p/pretalx_musicrate/$",
        MusicrateSettingsView.as_view(),
        name="settings",
    ),
]