Rack::ForceDomain

Directs all traffic to a single domain via 301 redirects.

Example Usage (Heroku)

config.ru

use Rack::ForceDomain, ENV["DOMAIN"]

environment.rb

config.middleware.use Rack::ForceDomain, ENV["DOMAIN"]

Heroku Config

heroku config:add DOMAIN="foo.com"

Now all requests to www.foo.com (or anything else pointed at the app) will 301 to foo.com.

If the $DOMAIN environment variable is missing, no redirection will occur.

You can also give provide a port along with your domain "foo.com:3000".