serialize

# File activerecord/lib/active_record/connection_adapters/postgresql/oid/range.rb, line 34
          def serialize(value)
            if value.is_a?(::Range)
              from = type_cast_single_for_database(value.begin)
              to = type_cast_single_for_database(value.end)
              "[#{from},#{to}#{value.exclude_end? ? ')' : ']'}"
            else
              super
            end
          end