relation

# File activerecord/lib/active_record/base.rb, line 969
        def relation #:nodoc:
          @relation ||= Relation.new(self, arel_table)

          if finder_needs_type_condition?
            @relation.where(type_condition).create_with(inheritance_column.to_sym => sti_name)
          else
            @relation
          end
        end