separator

# File actionview/lib/action_view/helpers/date_helper.rb, line 1148
        def separator(type)
          return "" if @options[:use_hidden]

          case type
          when :year, :month, :day
            @options[:"discard_#{type}"] ? "" : @options[:date_separator]
          when :hour
            (@options[:discard_year] && @options[:discard_day]) ? "" : @options[:datetime_separator]
          when :minute, :second
            @options[:"discard_#{type}"] ? "" : @options[:time_separator]
          end
        end