How to add parent attributes inside its children in rabl template?

Question

How to add parent attributes inside its children in rabl template? To do something like this:

parent: {
  attr_1: 'asd',
  attr_2: 'dfg',
  child: {
    attr_3: 6,
    attr_from_parent: 'cvb'
  }
}

Answer 1

object @parent
attributes :attr_1, :attr_2

child :child do
  attributes :attr_3, :name
  node(:attr_from_parent) { @parent.attr_from_parent }
end

You may also have a look at http://railscasts.com/episodes/322-rabl?view=asciicast