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"