class Spree::Api::VariantSerializer < ActiveModel::Serializer
  attributes :id, :options_text, :unit_value, :unit_description, :on_demand, :display_as, :display_name
    
      attributes :on_hand, :price
    
      def on_hand
        object.on_hand.nil? ? 0 : ( object.on_hand.to_f.finite? ? object.on_hand : "On demand" )
      end
    
      def price
        object.price.nil? ? 0.to_f : object.price
      end
end