rails/rails — comment on commit afde6fdd5ef3e6b0693a7e330777e85ef4cffddb
File: railties/lib/rails/rack/tagged_logging.rb line 28
By josevalim:

I believe we have a :subdomain method in the request (if not, we could add it). That said, this could probably be something like:

when Symbol
request.send(tag)