- belongs_to :old_relation, :foreign_key => [:relation_id, :version]
-
- validates_presence_of :old_relation
- validates_length_of :k, :maximum => 255, :allow_blank => true
- validates_uniqueness_of :k, :scope => [:relation_id, :version]
- validates_length_of :v, :maximum => 255, :allow_blank => true
+class OldRelationTag < ApplicationRecord
+ self.table_name = "relation_tags"
+ self.primary_keys = "relation_id", "version", "k"
+
+ belongs_to :old_relation, :foreign_key => [:relation_id, :version], :inverse_of => :old_tags
+
+ validates :old_relation, :associated => true
+ validates :k, :v, :allow_blank => true, :length => { :maximum => 255 }, :characters => true
+ validates :k, :uniqueness => { :scope => [:relation_id, :version] }