WooCommerce 折扣:买一送一 50% 折扣

WooCommerce discount: buy one get one 50% off

我希望为特定的可变产品设置特定折扣,如果客户购买一种产品,他们会以 50% 的折扣获得另一种(相同)产品(买一送一,享受 50% 的折扣)。我试过很多折扣插件,我发现最接近的是:

通过使用这些插件,我能够设置小计折扣或每个产品的折扣,但不是我想要的(买 1 送 1)。还有其他专业插件我不想用。

是否可以不购买插件实现?

谢谢

找到类似的东西 https://www.fldtrace.com/buy-3-get-1-free-coupon-woocommerce

更新 (与您的评论相关)

此版本将在全球范围内针对此定义的变量产品在购物车中的所有产品变体上工作:

add_action('woocommerce_cart_calculate_fees', 'add_custom_discount_2nd_at_50', 10, 1 );
function add_custom_discount_2nd_at_50( $wc_cart ){
    if ( is_admin() && ! defined( 'DOING_AJAX' ) ) return;
    $discount = 0;
    $items_prices = array();

    // Set HERE your targeted variable product ID
    $targeted_product_id = 40;

    foreach ( $wc_cart->get_cart() as $key => $cart_item ) {
        if( $cart_item['product_id'] == $targeted_product_id ){
            $qty = intval( $cart_item['quantity'] );
            for( $i = 0; $i < $qty; $i++ )
                $items_prices[] = floatval( $cart_item['data']->get_price());
        }
    }
    $count_items_prices = count($items_prices);
    if( $count_items_prices > 1 ) foreach( $items_prices as $key => $price )
        if( $key % 2 == 1 ) $discount -= number_format($price / 2, 2 );

    if( $discount != 0 ){
        // Displaying a custom notice (optional)
        wc_clear_notices();
        wc_add_notice( __("You get 50% of discount on the 2nd item"), 'notice');

        // The discount
        $wc_cart->add_fee( 'Discount 2nd at 50%', $discount, true  );
        # Note: Last argument in add_fee() method is related to applying the tax or not to the discount (true or false)
    }
}

代码进入您的活动子主题(或主题)的 function.php 文件或任何插件文件。

此代码已在 Woocommerce 3+ 上测试并有效。


原回答:

有很多方法可以为特定可变产品 ID 的第二项添加 50% 的自定义折扣。下面我使用 add_fee() 方法和负值 (所以它增加了折扣)
可选择显示自定义通知:

add_action('woocommerce_cart_calculate_fees', 'add_custom_discount_2nd_at_50', 10, 1 );
function add_custom_discount_2nd_at_50( $wc_cart ){
    if ( is_admin() && ! defined( 'DOING_AJAX' ) ) return;
    $discount = 0;

    // Set HERE your targeted variable product ID
    $targeted_product_id = 40;

    foreach ( $wc_cart->get_cart() as $key => $cart_item ) {
        if( $cart_item['product_id'] == $targeted_product_id ){
            $price = $cart_item['data']->get_price();
            $quantity = intval( $cart_item['quantity'] );
            for( $i = 1, $j = 0; $i <= $quantity; $i++ ){
                if( $i % 2 == 0 &&  $quantity > 1 ) $j++;
            }
            if( $quantity > 1 ) number_format($discount -= $price * $j / 2, 2 );
        }
    }
    if( $discount != 0 ){
        // Displaying a custom notice (optional)
        wc_clear_notices();
        wc_add_notice( __("You get 50% of discount on the 2nd item"), 'notice');
        
        $wc_cart->add_fee( 'Discount 2nd at 50%', $discount, true  );
        # Note: Last argument in add_fee() method is related to applying the tax or not to the discount (true or false)
    }
}

代码进入您的活动子主题(或主题)的 function.php 文件或任何插件文件。

此代码已在 Woocommerce 3+ 上测试并有效。

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