actionpack-3.0.6/lib/action_view/helpers/form_tag_helper.rb

form_tag_helper.rb

      def select_tag(name, option_tags = nil, options = {})
        if Array === option_tags
          ActiveSupport::Deprecation.warn 'Passing an array of option_tags to select_tag implicitly joins them without marking them as HTML-safe. Pass option_tags.join.html_safe instead.', caller
        end

        html_name = (options[:multiple] == true && !name.to_s.ends_with?("[]")) ? "#{name}[]" : name
        if blank = options.delete(:include_blank)
          if blank.kind_of?(String)
            option_tags = "<option value=\"\">#{blank}</option>".html_safe + option_tags
          else
            option_tags = "<option value=\"\"></option>".html_safe + option_tags
          end
        end
        content_tag :select, option_tags, { "name" => html_name, "id" => sanitize_to_id(name) }.update(options.stringify_keys)
      end