select_day (ActionView::Helpers::DateHelper)

    # File lib/action_view/helpers/date_helper.rb, line 162
          def select_day(date, options = {})
            day_options = []

            1.upto(31) do |day|
              day_options << ((date && (date.kind_of?(Fixnum) ? date : date.day) == day) ?
                %(<option value="#{day}" selected="selected">#{day}</option>\n) :
                %(<option value="#{day}">#{day}</option>\n)
              )
            end

            select_html(options[:field_name] || 'day', day_options, options[:prefix], options[:include_blank], options[:discard_type], options[:disabled])
          end