%th{ class: 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.sort['table'] == field['table'] && @procedure_presentation.sort['column'] == field['column']
      - if @procedure_presentation.sort['order'] == 'asc'
        #{field['label']} ↑
      - else
        #{field['label']} ↓
    - else
      #{field['label']}