tap/app/views/orders/overview.html.erb

<div class="col-md-6 ">
  <h3 class="center" >sort by name</h3>

  <% @users_by_name.each do |user| %>
      <div class="thumbnail overview">
      <%= link_to image_tag("http://placehold.it/100x100", class: "img-circle"),
        new_user_order_path(user) %>
      <%= link_to user.name , new_user_order_path(user), class: "btn btn-info overview",
        style: get_color_style(user) %>
    </div>
  <% end %>

</div>


<div class="col-md-6 ">
  <h3 class="center" >sort by name</h3>

  <% @users_by_order.each do |user| %>
      <div class="thumbnail overview">
      <%= link_to image_tag("http://babeholder.pixoil.com/img/100/100", class: "img-circle"),
        new_user_order_path(user) %>
      <%= link_to user.name , new_user_order_path(user), class: "btn btn-info overview",
        style: get_color_style(user) %>
    </div>
  <% end %>