Prestashop：如何清空购物车？ [英] Prestashop : How to Empty cart?

问题描述

在将新产品添加到购物车后，我想使购物车订单列表为空。
实际上，每次只能在产品上进行购物。
Tanx

I want to make Cart order list empty after a new product has been added to the cart. In fact only on product every time can be in cart. Tanx

推荐答案

添加自定义逻辑的2种方法：

2 ways to add your custom logic :

• 创建您自己的模块并将其挂接到 actionCartSave上


• 覆盖 Cart类中的 add和 update方法（ /override/classes/Cartp.php）

• create your own module and hook it on "actionCartSave"
• override "add" and "update" methods in "Cart" class (/override/classes/Cartp.php)

编辑：第二种方法出错是因为无限的更新循环。

Edit : The 2nd way os wrong because infinite update loop.

以下是执行此操作的模块：

Here is a module that do it :

class OneProductCart extends Module {
    public function __construct() {
        $this->name = 'oneproductcart';
        $this->tab = 'front_office_features';
        $this->version = '1.0';
        $this->author = 'SJousse';
        $this->need_instance = 0;
        parent::__construct();
        $this->displayName = $this->l('One Product Cart');
        $this->description = $this->l('Keep only last product in cart.');
    }
    public function install() {
        return (parent::install() && $this->registerHook('actionCartSave'));
    }
    public function hookActionCartSave($params) {
        $cart = $params['cart'];
        $last = $cart->getLastProduct();
        $prods = $cart->getProducts();

        foreach ($prods as $prod)
            if ($prod['id_product'] != $last['id_product'])
                $cart->deleteProduct($prod['id_product']);
    }
}

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