tap/app/views/users/_new_order.html.erb

<div class="col-md-2 thumbnail overview">
  <% unless user.dagschotel.nil? %>
    <%= link_to user_quickpay_path(user) do %>
      <%= image_tag user.dagschotel.avatar(:dagschotel), class: "img-circle dagschotel" %>
    <% end %>
  <% end %>

  <%= link_to image_tag(user.avatar(:large) , class: "img-circle avatar"), new_user_order_path(user) %>
  <%= link_to user.nickname , new_user_order_path(user), class: "btn btn-info", style: get_color_style(user) %>
</div>