module ActiveModel::Validations::Callbacks::ClassMethods

person.status # => true
person.valid? # => true
person.name = 'bob'
person.status # => false
person.valid? # => false
person.name = ''
person = Person.new

end
end
self.status = errors.empty?
def set_status
private

after_validation :set_status

validates_presence_of :name

attr_accessor :name, :status

include ActiveModel::Validations::Callbacks
include ActiveModel::Validations
class Person

Defines a callback that will get called right after validation.

def after_validation(*args, &block)
  options = args.extract_options!
  options = options.dup
  options[:prepend] = true
  set_options_for_callback(options)
  set_callback(:validation, :after, *args, options, &block)
end