- belongs_to :node, :foreign_key => 'id'
-
- validates_presence_of :id
- validates_length_of :k, :v, :maximum => 255, :allow_blank => true
- validates_uniqueness_of :id, :scope => :k
- validates_numericality_of :id, :only_integer => true
+ belongs_to :node
+
+ validates :node, :presence => true, :associated => true
+ validates :k, :v, :allow_blank => true, :length => { :maximum => 255 }
+ validates :k, :uniqueness => { :scope => :node_id }