class OldWayTag < ActiveRecord::Base
+ self.table_name = "way_tags"
+ self.primary_keys = "way_id", "version", "k"
+
+ belongs_to :old_way, :foreign_key => [:way_id, :version]
+
+ validates :old_way, :presence => true, :associated => true
+ validates :k, :v, :allow_blank => true, :length => { :maximum => 255 }
+ validates :k, :uniqueness => { :scope => [:way_id, :version] }
end