- @order_articles.includes(:order => :supplier).reorder('suppliers.name, articles.article_category_id, articles.name').group_by {|oa| oa.order.name}.each do |name, articles|
  %li.nav-header= name
  - articles.each do |oa|
    %li= link_to oa.article.name, current_orders_articles_path(order_id: oa.order_id, id: oa.id, anchor: 'order_article'), remote: true
