Hello,
I use Wagtail for managed content of several sites. Wagtail allows you to add a site with different domain/subdomain (see the screenshot below) and to use same templates with several additional conditions in your code (if it necessary, for splitting tags into sevelar groups, for example).
But I always forget to add my new subdomain to the CSRF_TRUSTED_ORIGINS array (setting/base.py) and to add it to the ALLOWED_HOSTS array - for the production environment. I hope this post helps me to remember these points.
