WooCommerce costum meta_key

Question

我想为每个WooCommerce产品添加一个自定义meta_key值，这将是折扣率：

_discount_rate = ((_sale_price-_regular_price_)/(_regular_price)*100)

我正在尝试弄清楚如何向WooCommerce功能添加过滤器woocommerce_process_product_meta如下所示：

add_filter('woocommerce_process_product_meta', 'mytheme_product_save_discountrate');
function mytheme_product_save_discountrate($post_id) {
    if (get_post_meta($post_id, "_sale_price")) {
        $regular_price = get_post_meta($post_id, "_regular_price");
        $sale_price = get_post_meta($post_id, "_sale_price");
        $discount_rate = ($sale_price - $regular_price) / $regular_price * 100);
        update_post_meta($post_id, '_discount_rate', $discount_rate);
    }
}

我只是不确定如何检索常规价格和销售价格？

Answer 1

WooCommerce有一个内置的方法来获取价格 get_regular_price()和get_sale_price().

这是代码：

add_action('woocommerce_process_product_meta', 'mytheme_product_save_discountrate', 999); //<-- check the priority
function mytheme_product_save_discountrate($post_id) {
    $_product = wc_get_product($post_id);
    $regular_price = $_product->get_regular_price();
    $sale_price = $_product->get_sale_price();
//    $_product->get_price();
    if (!empty($sale_price)) {
        $discount_rate = (($sale_price - $regular_price) / ($regular_price)) * 100; //replace it with your own logic
        update_post_meta($post_id, '_discount_rate', $discount_rate);
    }
}

代码functions.php活动子主题(或主题(的文件中。或者在任何插件PHP文件中。
代码经过测试并正常工作。

希望这有帮助！