has_many :old_way_nodes
has_many :ways_via_history, :class_name=> "Way", :through => :old_way_nodes, :source => :way
- has_many :old_way_nodes
- has_many :ways_via_history, :class_name=> "Way", :through => :old_way_nodes, :source => :way
-
has_many :containing_relation_members, :class_name => "RelationMember", :as => :member
has_many :containing_relations, :class_name => "Relation", :through => :containing_relation_members, :source => :relation, :extend => ObjectFinder