WooCommerce 中特定产品 ID 的批量折扣

Question

我想在结账时根据数量阈值对特定产品打折：

• 当产品 >= 10 件时 ----- 每件优惠 2 美元
• 当产品 >= 20 件时 ----- 每件折扣 3 美元

所需输出示例：

• 产品 × 10 等于 $730.00 |折扣为 $20.00 |折扣后总计：710.00 美元
• 产品 × 20 等于 $1460.00 |折扣为 $60.00 |折扣后总计：$1400.00 $1,400.00

到目前为止，我有这个，但是当我将 10 件产品添加到购物车时，我收到了一个严重错误。

我的代码：

add_action( 'woocommerce_before_calculate_totals', 'quantity_based_pricing', 9999 );
    function quantity_based_pricing( $cart ) {
    
        if ( is_admin() && ! defined( 'DOING_AJAX' ) ) return;
    
        if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 ) return;
    
        // Define discount rules and thresholds
        $threshold1 = 10; // Change price if items > 10
        $discount1 = 0.02739726027; // Reduce 73 dollar unit price by 2 dollars
        $threshold2 = 20; // Change price if items > 20
        $discount2 = 0.04109589041; // Reduce 73 dollar unit price by 3 dollars
          //compare
        foreach ( $cart->get_cart() as $cart_item_key => $cart_item )
          // Get product id
          $product_id = $cart_item['product_id'];
    
            if ( $cart_item['quantity'] >= $threshold1 && $cart_item['quantity'] < $threshold2 && $cart_item = '283' ) {
             $price = round( $cart_item['data']->get_price() * ( 1 - $discount1 ), 2 );
             $cart_item['data']->set_price( $price );
          } elseif ( $cart_item['quantity'] >= $threshold2 && in_array( $product_id, $specific_product_ids ) ) {
             $price = round( $cart_item['data']->get_price() * ( 1 - $discount2 ), 2 );
             $cart_item['data']->set_price( $price );
          }
        }

我做错了什么？如何使这项工作没有错误？

Answer 1

您的代码中有一些错误。请尝试以下方法：

function quantity_based_pricing_discount( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

    if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 )
        return;

    // Define discount rules and thresholds
    $threshold1 = 10; // Change price if items > 10
    $threshold2 = 20; // Change price if items > 20
    $discount_1 = 2; // Reduce unit price by 2 dollars
    $discount_2 = 3; // Reduce unit price by 3 dollars

    // Loop through cart items
    foreach ( $cart->get_cart() as $cart_item ) {
        // Targeting specific product id
        if( $cart_item['product_id'] == '283' ) {
            $price = $cart_item['data']->get_price();
            $qty   = $cart_item['quantity'];

            if ( $qty >= $threshold1 && $qty < $threshold2 ) {
                $discount = $discount_1;
            } elseif ( $qty >= $threshold2 ) {
                $discount = $discount_2;
            }

            if ( isset($discount) ) {
                $cart_item['data']->set_price( round( $price - $discount, 2 ) );
            }
        }
    }
}

代码位于活动子主题（或活动主题）的functions.php 文件中。经过测试并且可以工作。