cheat sheets.

DRY out your database.yml
From: http://blog.bleything.net/articles/2006/06/27/dry-out-your-database-yml
Updated with a more universal database naming scheme, which better accomodates
multiple instances of the same application.

-----

login: &login
  adapter: mysql
  username: username
  password: password
  # host: mysql.example.com
  encoding: utf8
  port: 3306

development:
  <<: *login
  database: app_domain_com_d

test:
  <<: *login
  database: app_domain_com_t

production:
  <<: *login
  database: app_domain_com_p