ruby-on-rails – 使用mixins初始化类变量

概述我有 class Fruit < ActiveRecord::Base includes Skinend 和mixin模块 module Skin def initialize self.skin = "fuzzy" endend 我想这样 >> Fruit.new#<Fruit skin: "fuzzy", created_at: nil, upda 我有

class Fruit < ActiveRecord::Base    includes Skinend

和mixin模块

module Skin    def initialize        self.skin = "fuzzy"    endend

我想这样

>> Fruit.new#<Fruit skin: "fuzzy",created_at: nil,updated_at: nil>

解决方法 使用ActiveRecord after_initialize回调.

module Skin  def self.included(base)     base.after_initialize :skin_init  end  def skin_init    self.skin = ...  endendclass Fruit < AR::Base  include Skin  ...end

总结

以上是内存溢出为你收集整理的ruby-on-rails – 使用mixins初始化类变量全部内容，希望文章能够帮你解决ruby-on-rails – 使用mixins初始化类变量所遇到的程序开发问题。

如果觉得内存溢出网站内容还不错，欢迎将内存溢出网站推荐给程序员好友。