Shoden Contrib -

class Person < Shoden::Model
  include Shoden::DataTypes

  attribute :age, Type::Integer
end

class Person < Shoden::Model
  include Shoden::Default

  attribute :name
  default   :name, 'John Doe'
end

class Person < Shoden::Model
  include Shoden::Timestamps
end

person = Person.create
person.created_at
person.updated_at