class ActiveModel::Serializers::Xml::Serializer::Attribute

def compute_type
  return if value.nil?
  type = ActiveSupport::XmlMini::TYPE_NAMES[value.class.name]
  type ||= :string if value.respond_to?(:to_str)
  type ||= :yaml
  type
end

def decorations
  decorations = {}
  decorations[:encoding] = 'base64' if type == :binary
  decorations[:type] = type unless type == :string
  decorations[:nil] = true if value.nil?
  decorations
end

def initialize(name, serializable, raw_value=nil)
  @name, @serializable = name, serializable
  raw_value = raw_value.in_time_zone if raw_value.respond_to?(:in_time_zone)
  @value = raw_value || @serializable.send(name)
  @type  = compute_type
end