%select.collate_sort{opts}

- if opts[:allow_none]
  %option{value: "", selected: (params[:order].to_s == "")}
    None
- sorters.each do |sorter|
  %option{value: "#{sorter.field} ASC", selected: (params[:order] == "#{sorter.field} ASC")}
    = sorter.asc_label
  %option{value: "#{sorter.field} DESC", selected: (params[:order] == "#{sorter.field} DESC")}
    = sorter.desc_label