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

<%= @user.name %>

<%= form_for( @order, url: user_orders_path(@user)) do |f| %>
  <% @order_products.each do |op| %>
    <%= f.fields_for :products do |products| %>
      <%= products.fields_for op.product.id.to_s do |product_field| %>
          <div class="input-group">
            <span class="input-group-btn">
            <button class="btn btn-default btn-dec" type="button">
              <span class="glyphicon glyphicon-minus"></span>
            </button>
          </span>
          <%= product_field.text_field :count, class: 'form-control', value: 0 %>
          <span class="input-group-btn">
            <button class="btn btn-default btn-inc" type="button">
              <span class="glyphicon glyphicon-plus"></span>
            </button>
          </span>
        </div>
      <% end %>
    <% end %>
  <% end %>
  <%= f.submit "Order", class: "btn btn-primary " %>
<% end %>


<div style="padding-top: 50px;" class="order_list ">
  <p>
    Nothing ordered yet!
  </p>
</div>