%th{ @procedure_presentation.aria_sort(@procedure_presentation.sort['order'], field), scope: "col", class: field.classname }
  = link_to update_sort_instructeur_procedure_path(@procedure, table: field.table, column: field.column, order: @procedure_presentation.opposite_order_for(field.table, field.column)) do
    - if @procedure_presentation.sortable?(field)
      - if @procedure_presentation.sort['order'] == 'asc'
        #{field.label} ↑
      - else
        #{field.label} ↓
    - else
      #{field.label}