ruby-on-rails - rails - 关注的验证问题

Question

我在验证方面遇到问题
有课
/app/models/group.rb

class Group < AbstractModel
  include Localized::Title

  ...

end

/app/models/concerns/localized/title.rb

module Localized::Title
  extend ActiveSupport::Concern
  include ActiveModel::Validations

  include do 
    validates :title_ua, length: {minimum: 3, maximum: 200}, uniqueness: true
    validates :title_ru, length: {minimum: 3, maximum: 200}, uniqueness: true
  end

...

end

当我尝试在模型中使用验证时，它可以工作，但不必担心。
请帮助我，我做错了什么？

附言AbstractModel < ActiveRecord::Base,
rails 4.2， ruby 2.2.0p0

Answer 1

它是“包括”不包括。像这样尝试:

module Localized::Title
  extend ActiveSupport::Concern
  include ActiveModel::Validations

  included do 
    validates :title_ua, length: {minimum: 3, maximum: 200}, uniqueness: true
    validates :title_ru, length: {minimum: 3, maximum: 200}, uniqueness: true
  end

...

end