基于 WooCommerce 购物车中某个类别的商品数量计数的折扣

Question

我有一类产品的价格都是 15 美元。当用户从该类别购买 10 到 20 件产品时，他们应该获得 10 美元的折扣价。当用户购买 20+ 时，价格再次变为 5 美元。不能为用户分配自定义角色（如批发商）。我根据另一个问题的 LoicTheAztec 代码松散地创建了代码，并添加了我自己的修改和代码。看起来应该可以。我没有收到任何错误，但它不起作用。

add_action('woocommerce_before_cart', 'check_product_category_in_cart');

function check_product_category_in_cart() {
    // HERE set your product categories in the array (can be IDs, slugs or names)
    $categories = array('surfacing-adhesives');
    $found      = false; // Initializing

    $count = 0;

    // Loop through cart items      
    foreach ( WC()->cart->get_cart() as $cart_item ) {
        // If product categories is found
        if ( has_term( $categories, 'product_cat', $cart_item['product_id'] ) ) {
            $count++;
        }
    }

    if (!current_user_can('wholesaler')) {
        // Discounts
        if ($count > 10 && $count < 20) {
            // Drop the per item price
            $price = 10;
        } else if ($count > 20) {
            // Drop the per item price
            $price = 5;
        } else {
            // Did not qualify for volume discount
        }
    }
}

Answer 1

您没有使用正确的挂钩，并且缺少一些东西。请尝试以下操作：

add_action( 'woocommerce_before_calculate_totals', 'discounted_cart_item_price', 20, 1 );
function discounted_cart_item_price( $cart ){
    // Not for wholesaler user role
    if ( ( is_admin() && ! defined( 'DOING_AJAX' ) ) || current_user_can('wholesaler') )
        return;

    // Required since Woocommerce version 3.2 for cart items properties changes
    if ( did_action( 'woocommerce_before_calculate_totals' ) >= 2 )
        return;

    // HERE set your product categories in the array (can be IDs, slugs or names)
    $categories = array('surfacing-adhesives');
    $categories = array('t-shirts');

    // Initializing
    $found = false;
    $count = 0;

    // 1st Loop: get category items count  
    foreach ( WC()->cart->get_cart() as $cart_item ) {
        // If product categories is found
        if ( has_term( $categories, 'product_cat', $cart_item['product_id'] ) ) {
            $count += $cart_item['quantity'];
        }
    }

    // Applying discount
    if ( $count >= 10 ) {
        // Discount calculation (Drop the per item qty price)
        $price = $count >= 20 ? 5 : 10;

        // 2nd Loop: Set discounted price  
        foreach ( WC()->cart->get_cart() as $cart_item ) {
            // If product categories is found
            if ( has_term( $categories, 'product_cat', $cart_item['product_id'] ) ) {
                $cart_item['data']->set_price( $price );
            }
        }
    }
}

代码进入您的活动子主题（或活动主题）的 functions.php 文件。已测试并有效。

基于 WooCommerce 购物车中某个类别的商品数量计数的折扣

Discount based on item quantity count for a category in WooCommerce cart

php

wordpress

woocommerce

hook-woocommerce

taxonomy-terms