将Storext(或仅Virtus)与嵌套数组或哈希对象一起使用

问题描述

我有一个Postgres DB用一个带有jsonb列的类来支持我的Rails应用

I have a postgres DB backing my Rails app with a class with a jsonb column

class Product < AR::B
  include Storext.model(data: {})

  store_attributes :data do
    thing_one String
    thing_two Boolean # Not actually showing up in the `data` hash
    foos      FooCollection[Foo]
  end
end

class FooCollection < Array
  def <<(obj)
    if Hash
      super(Coupon.new(obj)
    else
      # Other coersions
    end
  end
end

class Foo
  include Storext.model

  attribute :id,                Integer
  attribute :price,             Float
  attribute :regular_price,     Float
end

但是终端中的Foo正在返回undefined method after_initialize for Foo:Class

But Foo in the terminal is returning undefined method after_initialize for Foo:Class

是否有一种方法可以嵌套Storext模型，就像使用Virtus一样?如果是这样，是否有一种惯用的方法可以在嵌套类上添加验证? (放弃Storext，而单纯的Virtus解决方案也将回答这个问题)

Is there a way to nest Storext models the same way it is with Virtus? And if so is there an idiomatic way to add validations on the nested classes? (Abandoning Storext, and a pure Virtus solution would also answer the question)

也许这是一个A/B问题，因为我只是将Virtus包含在FooCollection中，并且它也从data哈希中消失了(我认为这很奇怪，因为Storext基于Virtus并且可以接受Virtus方法).

Maybe this is an A/B problem because I just included Virtus in FooCollection and it also disappeared from the data hash (which I consider weird since Storext is based on Virtus and can accept Virtus methods).

推荐答案

Storext的创建仅用于类型转换简单值.我本人并没有在Virtus中存储复杂的对象，我仍然不确定是否应该将其存储在Storext中.尽管它在后台使用Virtus，但我认为它不应实现Virtus可以做的所有事情.

Storext was created to type-cast simple values only. I haven't played around storing complex objects in Virtus myself, and I'm still undecided whether or not that should be part of Storext. While it uses Virtus in the background, I don't think it should implement everything Virtus can do.

聚会晚了一点，但我希望这会有所帮助.

A little late to the party, but I hope this helps.

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