Ruby on rails 子类与Rabl

我有一个包含父类和子类对象的提要，我使用RABL将其呈现为json。我将根对象包含在json中

问题是这个=>取决于首先出现的内容，json中的根节点将使用相应的类生成

我需要它是所有的父类

示例如下：

Class Klass
 ...

Class SubclassOfKlass < Klass
 ...

k = Klass.create
s = SubclassOfKlass.create

array1 = [k,s]
Rabl::Renderer.json(nil, 'answers/list', view_path: 'app/views', locals: {object: array1})

## results will render everything as "Klass" objects
## [{\"klass\":{\"_id\":\"1\"},{\"klass\":{\"_id\":\"2\"}]

array2 = [s,k]
Rabl::Renderer.json(nil, 'answers/list', view_path: 'app/views', locals: {object: array1})

## results will render everything as "SubclassOfKlass" objects
## [{\"subclass_of_klass\":{\"_id\":\"1\"},{\"subclass_of_klass\":{\"_id\":\"2\"}]

### But I need the root to be always "klass" and not "subclass_of_klass"

---

好的，答案很简单：

collection @answers, :object_root => "answer"

---

你能发布你的.rabl模板吗？另外，我是否正确理解了RABL生成的JSON看起来像

{“subclass”：{…}}

，您希望它看起来像

{“class”：{…}

？@drewinglis done！是的，你是对的。这很令人费解，really@drewinglis谢谢你的帮助-我发布了我的解决方案

collection @answers, :object_root => "answer"