Prestashop 1.7 在最终订单步骤检查可用库存

Question

我在 Prestashop 1.6 上做了一些工作，以便在客户购买之前检查购物车数量。这是我在 Prestashop 1.7 上的问题：如果客户今天将商品放入购物车，他会在 2 天后回来，并且他仍处于登录状态。购物车仍然可用，而实际上产品已缺货。客户可以下订单，我的库存数量是-1。自从我升级到 prestashop 1.7 这是一场灾难，我的数量为 -5、-10...因为如果这个未检查的场景。

abstract class PaymentModule extends PaymentModuleCore
{
    public function validateOrder($id_cart, $id_order_state, $amount_paid, $payment_method = 'Unknown',
        $message = null, $extra_vars = array(), $currency_special = null, $dont_touch_amount = false,
        $secure_key = false, Shop $shop = null)
    {

        if (!isset($this->context))
            $this->context = Context::getContext();
        $this->context->cart = new Cart($id_cart);

        if (!$this->context->cart->checkQuantities()){
            Tools::redirect(__PS_BASE_URI__.'order.php?step=0');
        }
        return parent::validateOrder($id_cart, $id_order_state, $amount_paid, $payment_method, $message, 
            $extra_vars, $currency_special, $dont_touch_amount, $secure_key, $shop);
    }
}

Answer 1

实际上最好的解决方案是使用这个插件：https://addons.prestashop.com/en/stock-supplier-management/21707-temporary-product-reservation-lonely-stock.html

Prestashop 处理非常糟糕的购物车库存。

无论如何，如果您想自己做并查看可用库存，这非常简单：

<?php

    $cart = $this->context->cart;
    $cart_products = $cart->getProducts();

    if (!empty($cart_products)) {

        $db = Db::getInstance();

        foreach ($cart_products as $key => $cart_product) {

            $real_quantity = StockAvailable::getQuantityAvailableByProduct($cart_product['id_product'], $cart_product['id_product_attribute']);

            if ( (int) $real_quantity < (int) $cart_product['quantity'] ) {

                // If negative
                $real_quantity = (int) $real_quantity < 0 ? 0 : $real_quantity;

                $sql = '
                        UPDATE `'._DB_PREFIX_.'cart_product`
                        SET quantity = '.(int) $real_quantity.',`date_add` = NOW()
                        WHERE `id_product` = '.(int) $cart_product['id_product'].
                        (!empty($cart_product['id_product_attribute']) ? ' AND `id_product_attribute` = '.(int) $cart_product['id_product_attribute'] : '').'
                        AND `id_cart` = '.(int) $cart->id;

                    $db->execute($sql);
            }

        }

        // Garbage collector
        $db->execute('DELETE FROM '._DB_PREFIX_.'cart_product WHERE quantity < 1 ');

    }

Prestashop 1.7 在最终订单步骤检查可用库存

Prestashop 1.7 check available stock at final order step

prestashop

cart

prestashop-1.7