Couchrest_model in Heroku Cloudant

How can I configure couchrest_model YML for Heroku Cloudant?

Is it like that?

production:
protocol:
host: “#{ENV[‘CLOUDANT_URL’]}”
port:
prefix: testcouch
suffix: production
username:
password:

ENV[‘CLOUDANT_URL’] value is like:
https://app632860.heroku:[email protected]