trustieforge/app/api/mobile/entities/attachment.rb

module Mobile
  module Entities
    class Attachment  < Grape::Entity
      def self.attachment_expose(field)
        expose field do |f,opt|
          if f.is_a?(Hash) && f.key?(field)
            f[field]
          elsif f.is_a?(::Attachment)
            if f.respond_to?(field)
              f.send(field)
            else
              #case field
              #  when ""
              #end
            end
          end
        end
      end
      attachment_expose :filename
      attachment_expose :description
    end
  end
end