class ActiveRecord::AttributeMethods::Serialization::Attribute

def serialize
  self.state = :serialized
  self.value = coder.dump(value)
end

def serialized_value
  state == :unserialized ? serialize : value
end

def unserialize(v)
  self.state = :unserialized
  self.value = coder.load(v)
end

def unserialized_value(v = value)
  state == :serialized ? unserialize(v) : value
end