ar_play.rb

require "active_record"

puts "AR Version: #{ActiveRecord::VERSION::MAJOR}"
 
ActiveRecord::Base.establish_connection(adapter: "sqlite3", database: ":memory:")
 
ActiveRecord::Schema.define do
  create_table :languages do |t|
    t.string :type
  end
end
 
class Language < ActiveRecord::Base
  self.inheritance_column = nil
end
 
class Language::Imperative < Language
end
 
class Language::Functional < Language
end
 
java = Language::Imperative.new
java.save!
puts java.attributes
 
java = Language.new type: 'Language::Imperative'
java.save!
puts java.attributes
 
java = Language.new type: 'Imperative'
java.save!
puts java.attributes