ruby-on-rails - 将我在多个模型中使用的自定义回调放在哪里

Question

假设我有两个具有相同回调的模型:

class Entry < ActiveRecord::Base
    belongs_to :patient
    validates :text, presence: true
    after_validation :normalizeDate

    def normalizeDate
      self.created_at = return_DateTime(self.created_at)
    end
end

class Post < ActiveRecord::Base
    after_validation :normalizeDate

    def normalizeDate
      self.created_at = return_DateTime(self.created_at)
    end
end

共享回调代码放在哪里？谢谢

 def normalizeDate
   self.created_at = return_DateTime(self.created_at)
 end

Answer 1

Marek 的回答很好，但 Rails 的方式是:

module NormalizeDateModule
  extend ActiveSupport::Concern

  included do
    after_validation :normalize_date
  end

  def normalize_date
    self.created_at = return_DateTime(created_at)
  end
end

Doc here .

(你有一个专门的文件夹:models/concerns)