问题描述

基于"woocommerce 在结帐和购物车中更改价格页面" 回答更改结帐页面总价的代码，我添加了一些额外的代码来计算用户在购物车中拥有的产品，如果用户在购物车中有 9 个产品，则添加一些价格总计:

Based on "woocommerce change price in checkout and cart page" answer code that change the total price in checkout page, I have added some extra code to count the products that user have in cart and if user had like 9 products in cart then add some price to total:

add_action( 'woocommerce_before_cart_totals', 'custom_cart_total' , 'get_cart_contents_count');
function custom_cart_total() {

    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
            return;
    if (WC()->cart->get_cart_contents_count() == 9){
        WC()->cart->total += 15;
    }
    elseif(WC()->cart->get_cart_contents_count() == 6){
       WC()->cart->total += 14; 
    }
    elseif(WC()->cart->get_cart_contents_count() == 4){
       WC()->cart->total += 13; 
    }

}

但它不起作用.这张图片将说明一切:

如果有人可以更正代码并告诉我如何显示图片中的消息，我将不胜感激

I will appreciate if anyone could correct the code and tell me how can I display the message like in the picture

推荐答案

你最好改用 FEE API，这样:

You should better use the FEE API instead, this way:

// Add a custom packing fee based on item count
add_action( 'woocommerce_cart_calculate_fees', 'custom_packing_fee', 10, 1 );
function custom_packing_fee( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) )
        return;

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

    $count = $cart->get_cart_contents_count();

    if ( $count >= 9 ){
        $fee = 15;
    }
    elseif( $count >= 6 && $count < 9 ){
        $fee = 14;
    }
    elseif( $count >= 4 && $count < 6 ){
        $fee = 13;
    }

    if ( isset($fee) && $fee > 0 ) {
        $label = sprintf( __('Box fee (%d items)'), $count);
        $cart->add_fee( $label, $fee, false );
    }
}

代码位于您的活动子主题(或活动主题)的functions.php 文件中.经测试有效.

Code goes in functions.php file of your active child theme (or active theme). Tested and works.

如果您想为包装费启用税金，请将第三个参数从 false 更改为 true.

If you want to enable taxes for the packing fee, change the third argument from false to true.

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