Ruby on rails 如何从Represents中筛选出属性/集合？

例如，我有一个representer，看起来像：

module AccountRepresenter

  include Roar::Representer::JSON
  include Roar::Representer::Feature::Hypermedia

  property :id
  property :name

  collection :assets, :extend => AssetRepresenter, :class => Asset
end

在控制器中，我将其用作：

respond_with @accounts, represent_with: AccountsRepresenter

对于另一个操作，我不希望显示

collection:assets

。我试过了

respond_with @accounts, represent_with: AccountsRepresenter, exclude: :assets

---

但它不起作用。我应该如何将参数传递给representers？

咆哮宝石使用Representable under（）。您可以执行以下操作以实现条件功能：

respond_with @accounts, represent_with: AccountsRepresenter, exclude: [:assets]

然后

module AccountRepresenter

  include Roar::Representer::JSON
  include Roar::Representer::Feature::Hypermedia

  property :id
  property :name

  collection :assets, extend: AssetRepresenter, if: lambda { |opts| !opts[:exclude].includes?(:assets)] }
end