application.html.slim

doctype html
html
  head
    title
      | Shopper2
    = stylesheet_link_tag    'application', media: 'all', 'data-turbolinks-track' => true
    = javascript_include_tag 'application', 'data-turbolinks-track' => true
    = csrf_meta_tags
  body

    header.navbar.navbar-default 
      .container
        .navbar-header
          = link_to 'Shopper', root_path, class: 'navbar-brand'
        .collapse.navbar-collapse
          ul.nav.navbar-nav.navbar-right
            li.dropdown
              - if user_signed_in?
                a.dropdown-toggle href="#" data-toggle='dropdown'
                  span.glyphicon.glyphicon-user>
                  span.caret<
                ul.dropdown-menu
                  li
                    = link_to 'ออกจากระบบ', destroy_user_session_path, method: :delete

    
    .container
      .row
        .col-sm-12

          = yield

แปะไว้ที่ product_controller.rb