+ self.table_name = "relations"
+ self.primary_keys = "relation_id", "version"
+
+ # note this needs to be included after the table name changes, or
+ # the queries generated by Redactable will use the wrong table name.
+ include Redactable
+
+ belongs_to :changeset
+ belongs_to :redaction
+ belongs_to :current_relation, :class_name => "Relation", :foreign_key => "relation_id"
+
+ has_many :old_members, -> { order(:sequence_id) }, :class_name => "OldRelationMember", :foreign_key => [:relation_id, :version]
+ has_many :old_tags, :class_name => "OldRelationTag", :foreign_key => [:relation_id, :version]
+
+ validates_associated :changeset