ruby-on-rails – Rails中的子类化模型

我有两个模型,Article和Recipe,它们有一堆相同的属性和方法.我想创建一个新类“Post”的子类,并在那里移动所有共享逻辑,所以我不维护重复的代码.我试过这个：

class Recipe < Post; end
class Article < Post; end
class Post < ActiveRecord::Base
     #all the shared logic
end

所有这些类都在标准的./app/models文件夹中.但是,当我转到/ articles / new时,此代码会抛出ActiveRecord :: StatementInvalid错误.错误是：

Could not find table ‘posts’

知道如何设置吗？

解决方法

你为什么不使用模块？

module Features
  def hello
    p "hello"
  end
end

class Recipe < ActiveRecord::Base
  include Features
end

class Article < ActiveRecord::Base
  include Features
end


Recipe.new.hello
# => "hello"

Article.new.hello
# => "hello"