enum.rb

begin
  require "bundler/inline"
rescue LoadError => e
  $stderr.puts "Bundler version 1.10 or later is required. Please update your Bundler"
  raise e
end

gemfile(true) do
  source "https://rubygems.org"
  gem "activerecord"
  gem "sqlite3"
end

require "active_record"
require "minitest/autorun"
require "logger"

# This connection will do for database-independent bug reports.
ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
ActiveRecord::Base.logger = Logger.new(STDOUT)

ActiveRecord::Schema.define do
  create_table :users do |t|
    t.integer :user_type
  end
end

class User < ActiveRecord::Base
  enum user_type: [:normal, :invited]
end

user = User.new(user_type: :invited)
p user.user_type
p user.user_type == :invited
user.save!
p user.reload.user_type

p User.first.user_type
p User.first.user_type == :invited