anchor.diff:        <%= label_tag :reserver_id, 'Reserving For' %>
         <%= hidden_field_tag 'reserver_id', cart.reserver_id %>
         <div class="input-group">
  -        <%# This must all be one one line for the button to display properly, sorry it's so ugly! %>
           <%= autocomplete_field_tag 'fake_reserver_id',
             cart.reserver_id == current_user.id ? '' : User.find(cart.reserver_id).render_name,
             autocomplete_user_last_name_users_path,
  
positive.code: <div id="cart_dates">
    <%= form_tag url_for(action: 'update_cart'), :remote => true, :class => "form-vertical", :id => "cart_form", method: :put do %>
  
      <%= hidden_field_tag 'page', params[:page] %>
      <%# to preserve pagination %>
  
negative.code:           placeholder: current_user.render_name,
            id_element: "#reserver_id",
            class: 'submittable form-control' %>
          <% if can? :create, User %>
            <span class="input-group-btn">
              <%= link_to sanitize("<i class=\"fa fa-plus\"></i>"), '#userModal', class: 'btn btn-default', id: 'modal', rel: 'tooltip', title: 'New Reserver', :"data-toggle" => 'modal' %>
            </span>
          <% end %>
        </div>
  
      <% elsif current_user %>
  