Rails database connection, url to yaml

Ruby Database Url -> Config YAML

#########################################################
#
# This method takes a db connection url and returns rails
# config YAML
#
##########################################################

require "uri"
require "yaml"

db_url = "mysql2://ted:password@example.net:3306/test?reconnect=false"
uri    = URI.parse(ENV["db_url"] || db_url)

qs     = Hash[URI::decode_www_form(uri.query)]
ui     = uri.userinfo.split(':')


config = {
  "production" => {
    "encoding" => qs["encoding"] || "utf-8",
    "adapter" =>  uri.scheme,
    "host" =>     uri.host,
    "port" =>     uri.port || 3306,
    "database" => uri.path[1..-1],
    "username" => ui.first,
    "password" => ui.last,
    "reconnect" => qs["reconnect"] || true,
    "pool" =>     qs["pool"] || 5,
}.to_yaml

puts config
# ---
# production:
#   encoding: utf-8
#   adapter: mysql2
#   host: example.net
#   port: 3306
#   database: test
#   username: ted
#   password: password
#   reconnect: 'false'
#   pool: 5