sdlong · August 29, 2015 14:03
diff --git a/_navbar.html.erb b/_navbar.html.erb
        <li> 
          <%= link_to carts_path do  %> 
            購物車 
            <i class="glyphicon glyphicon-shopping-cart"> </i> 
            ( <%= cart_items_count(current_cart) %> )
          <% end %>
        </li>
diff --git a/carts_helper.rb b/carts_helper.rb
 module CartsHelper
  def cart_items_count(cart)
    cart.cart_items.count
  end

 end
diff --git a/routes.rb b/routes.rb
 resources :carts
	<li>
	<%= link_to carts_path do %>
	購物車
	<i class="glyphicon glyphicon-shopping-cart"> </i>
	( <%= cart_items_count(current_cart) %> )
	<% end %>
	</li>