.expand{role: "tabpanel"}
  / Nav tabs
  %ul.nav.nav-tabs{role: "tablist"}
    %li.active{role: "presentation"}
      %a{"data-toggle" => "tab", href: "#all", role: "tab"} All
    - @categories.each do |o, i|
      %li{role: "presentation"}
        %a{"aria-controls" => o, "data-toggle" => "tab", href: "##{o}", role: "tab"}= o.titleize
  / Tab panes
  .tab-content
    %br/
    #all.tab-pane.active{role: "tabpanel"}
      = render @products
    - @categories.each do |o, i|
      .tab-pane{id: o, role: "tabpanel"}
        = render @products.where(category: i)