Sinatra, MySQL and ActiveRecord

Question

how do I set up a simple sinatra app to use MySQL and ActiveRecord? I found some solutions, but none of them worked (maybe they are outdated):

http://ericfarkas.com/post

Answer 1

You can still use sinatra-activerecord gem with MySQL and avial other features too.

Following is the way to use it:

require "sinatra/activerecord"

set :database, "mysql2://#{db_username}:#{db_password}@#{db_host}:#{db_port}/#{db_database}"

# Model
class User < ActiveRecord::Base
end 

get '/' do
  @items = User.all
  erb :index
end