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即時通訊「Rails Casts ep 141」將基本貝寶集成到我的項目中,但失敗了,但我找不到問題。PayPal與Rails集成
這裏是(用寶石「acts_as_shopping_cart)
class ShoppingCart < ActiveRecord::Base
acts_as_shopping_cart
def self.paypal_url
values ={
:business => '[email protected]',
:cmd => '_cart',
:upload => 1,
:invoice => id
}
@shopping_cart.shopping_cart_items.each_with_index do |item, index|
values.merge!({
"amount_#{index+1}" => item.precio,
"item_name_#{index+1}" => item.nombre,
})
end
"https://www.sandbox.paypal.com/cgi-bin/webscr?"+values.map{|k,v| "#{k}=#{v}"}.join("&")
end
end
我的車模型,並在那裏我調用的方法paypal_url在這裏
<title>Tu carrito</title>
<body>
<div class="container">
<div class="row">
<div class="col s12">
<ul class="collection with-header">
<li class="collection-header"><h4>Tu lista de productos</h4></li>
<% @shopping_cart.shopping_cart_items.each do |sc| %>
<li class="collection-item"><div><%= link_to Article.find(sc.item_id).nombre, article_path(Article.find(sc.item_id)) %>
<%= link_to shopping_carts_path(:product_id => sc.item_id), method: :delete, data:{ confirm: "Quitar este elemento del carrito?" }, class: "right" do%>
<i class="material-icons">delete</i>
<%end%></li>
<%end%>
</ul>
<%= link_to "Checkout", @shopping_cart.paypal_url() %>
</div>
</div>
</div>
</body>
當我嘗試在我的車的節目進入查看,它給我這個消息
undefined method `paypal_url' for #<ShoppingCart:0x007fd00d3e9358>
我該如何解決它?