- validates_length_of :k, :within => 1..255
- validates_length_of :v, :within => 1..255
-
- # Turn this Node in to an XML Node without the <osm> wrapper.
- def to_xml_node
- el1 = XML::Node.new 'preference'
- el1['k'] = k
- el1['v'] = v
-
- el1
- end
+ validates :user, :associated => true
+ validates :k, :v, :length => 1..255, :characters => true