使用Openshift上的Sequel连接到mysql

我正在开发一个使用Cloud9、Ruby和Sinatra的站点，并部署到Openshift。我已经为mySQL和PhpMyAdmin设置了盒带。我遇到的问题是使用Sequel连接到数据库

这是我的

DBS = Sequel.connect('mysql://OPENSHIFT_MYSQL_DB_USERNAME:OPENSHIFT_MYSQL_DB_PASSWORD@OPENSHIFT_MYSQL_DB_HOST:OPENSHIFT_MYSQL_DB_PORT')
heros = DBS[:superheros]
get '/mysql' do
  "#{heros.first[:name]}"
  #"mysql"
end

我也试过了

db_user = ENV['OPENSHIFT_MYSQL_DB_USERNAME']
db_pass = ENV['OPENSHIFT_MYSQL_DB_PASSWORD']
db_host = ENV['OPENSHIFT_MYSQL_DB_HOST']
db_port = ENV['OPENSHIFT_MYSQL_DB_PORT']
DBS = Sequel.connect('mysql://#{db_user}:#{db_pass}@#{db_host}/#{db_port}')

我得到的只是内部服务器错误

有谁能给我一些关于如何连接的提示吗

谢谢

端口和主机通过“/”分隔，但应为“：”（冒号）

您忘记了数据库名

正确连接字符串的示例：

mysql://user:password@host:port/database

试试那样的

db_user = ENV['OPENSHIFT_MYSQL_DB_USERNAME']  
db_pass = ENV['OPENSHIFT_MYSQL_DB_PASSWORD']  
db_host = ENV['OPENSHIFT_MYSQL_DB_HOST']  
db_port = ENV['OPENSHIFT_MYSQL_DB_PORT']  
db_name = ENV['OPENSHIFT_APP_NAME']  
DBS = Sequel.connect('mysql://#{db_user}:#{db_pass}@#{db_host}:#{db_port}/#{db_name}')

---

谢谢，我尝试了各种排列方式，但最终还是奏效了

db_user = ENV['OPENSHIFT_MYSQL_DB_USERNAME']
db_pass = ENV['OPENSHIFT_MYSQL_DB_PASSWORD']
db_host = ENV['OPENSHIFT_MYSQL_DB_HOST']
db_port = ENV['OPENSHIFT_MYSQL_DB_PORT']
DBS = Sequel.connect(:adapter=>'mysql', :host=>db_host, :database=>"prescreen", :user=>db_user, :password=>db_pass)

db_user = ENV['OPENSHIFT_MYSQL_DB_USERNAME']
db_pass = ENV['OPENSHIFT_MYSQL_DB_PASSWORD']
db_host = ENV['OPENSHIFT_MYSQL_DB_HOST']
db_port = ENV['OPENSHIFT_MYSQL_DB_PORT']
DBS = Sequel.connect(:adapter=>'mysql', :host=>db_host, :database=>"prescreen", :user=>db_user, :password=>db_pass)