zulip/zilencer/management/commands/migrate_stream_notifications.py

from typing import Any

from django.core.management.base import BaseCommand

from zerver.models import Subscription

class Command(BaseCommand):
    help = """One-off script to migration users' stream notification settings."""

    def handle(self, *args: Any, **options: Any) -> None:
        for subscription in Subscription.objects.all():
            subscription.desktop_notifications = subscription.notifications
            subscription.audible_notifications = subscription.notifications
            subscription.save(update_fields=["desktop_notifications",
                                             "audible_notifications"])