Mongoid connection snippet for MongoHQ + Heroku

Mongoid.configure do |config|
  if ENV['RACK_ENV'] == 'development' # ambiente de desenvolvimento
    name = "myapp_development"
    host = "localhost"
    config.master = Mongo::Connection.new.db(name)
    config.slaves = [ Mongo::Connection.new(host, 27017, :slave_ok => true).db(name) ]
  else # ambiente de produção
    uri =  URI.parse(ENV['MONGOHQ_URL'])
    config.master = Mongo::Connection.from_uri(ENV['MONGOHQ_URL']).db(uri.path.gsub("/", ""))
  end
end