i need to access the host name (and probably the port) inside actionmailer.
i need to send a link to something in the public/images directory.
in any normal page, i can access this via the request.env variable, but it looks like this variable is not defined in actionmailer..
what i would like to do is have it send the correct link via email, no matter what server i run it from (my development machine, the test server, or the production server).
so on the my development server, it would spit out:
on the test server, it would spit out:
and on the live one, it would spit out: