class OldRelation < ActiveRecord::Base
include ConsistencyValidations
+ include Redactable
self.table_name = "relations"
self.primary_keys = "relation_id", "version"
belongs_to :changeset
+ belongs_to :redaction
+ belongs_to :current_relation, :class_name => "Relation", :foreign_key => "relation_id"
has_many :old_members, :class_name => 'OldRelationMember', :foreign_key => [:relation_id, :version], :order => :sequence_id
has_many :old_tags, :class_name => 'OldRelationTag', :foreign_key => [:relation_id, :version]
def containing_relation_members
return []
end
+
+ # check whether this element is the latest version - that is,
+ # has the same version as its "current" counterpart.
+ def is_latest_version?
+ current_relation.version == self.version
+ end
end