active interaction aware responder

active_interaction_aware_responder.rb

# For json and xml, will render the result if no errors where present.
# otherwise will just render the interaction, containing things like {'errors' => {'attr' => ['invalid']}}
class ActiveInteractionAwareResponder < ActionController::Responder
  def to_format
    if resource.is_a?(ActiveInteraction::Base)
      if resource.errors.empty?
        @resource = resource.result
        @resources[-1] = @resource
      end
    end
    super
  end
end