例如,我有一个代表人物:
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,我将它用作:
respond_with @accounts, represent_with: AccountsRepresenter
对于另一个动作,我不希望出现collection :assets
。我试过了
respond_with @accounts, represent_with: AccountsRepresenter, exclude: :assets
但它不起作用。我应该如何将论证传递给代表?
答案 0 :(得分:2)
Roar gem在下面使用Representable(https://github.com/apotonick/representable#conditions)。您可以执行以下操作来获得条件功能:
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