在 WooCommerce 中成本较低的产品的购物车折扣，除非该产品已经在销售

Question

我想为购物车中最便宜的商品添加 30% 的折扣，除非它已经有折扣。

基于答案代码，这是我的代码尝试：

add_action('woocommerce_cart_calculate_fees', 'discount_on_cheapest_cart_item', 20, 1 );
function discount_on_cheapest_cart_item( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) ) 
        return;

    // Only for 2 items or more
    if ( $cart->get_cart_contents_count() < 2 ) return;


    // Initialising
    $percentage = 50; // 10 %
    $discount = 0;
    $item_prices = array();



    // Loop though each cart items and set prices in an array
    foreach ( $cart->get_cart() as $cart_item ) {
        
        $product_prices_excl_tax[] = wc_get_price_excluding_tax( $cart_item['data'] );
        
    }

    sort($product_prices_excl_tax);

    if( ! $cart_item['data']->is_on_sale() ){
        $discount = reset($product_prices_excl_tax) * $percentage / 100;
    
        $cart->add_fee( "Discount on cheapest (".$percentage."%)", -$discount );
    }   
}

有没有办法让它工作，如果价格最低的产品不打折，那么申请 30%，如果打折，就不要。但这仅适用于最低价，如果有其他产品在销售，我们将跳过它。

Answer 1

在您的代码尝试中使用 if( ! $cart_item['data']->is_on_sale() ) 不会有任何影响，因为它在 foreach 循环之外使用。

此答案将应用基于价格最低的产品计算的折扣，仅当该产品尚未打折时才如此。

所以你得到：

function action_woocommerce_cart_calculate_fees( $cart ) {
    if ( is_admin() && ! defined( 'DOING_AJAX' ) ) 
        return;
    
    // Only for 2 items or more
    if ( $cart->get_cart_contents_count() < 2 ) return;

    // Setting
    $percentage = 30; // 30 %
    
    // Initialize
    $discount = 0;
    $product_prices_on_sale = array();
    $product_prices_excl_tax = array();

    // Loop though each cart items and set prices in an array
    foreach ( $cart->get_cart() as $cart_item ) {
        // When cart contains a on sale product
        if ( $cart_item['data']->is_on_sale() ) {
            // On sale, push to on sale array
            $product_prices_on_sale[] = wc_get_price_excluding_tax( $cart_item['data'] );
        }
        
        // Push to excl tax array
        $product_prices_excl_tax[] = wc_get_price_excluding_tax( $cart_item['data'] );
    }
    
    // Sort an array in ascending order
    sort( $product_prices_on_sale );
    sort( $product_prices_excl_tax );
    
    // Set the internal pointer of an array to its first element
    $p_o_s = reset( $product_prices_on_sale );
    $p_e_t = reset( $product_prices_excl_tax );
    
    // NOT equal
    if ( $p_o_s != $p_e_t ) {
        // Calculate discount
        $discount = $p_e_t * $percentage / 100;

        // Apply discount (negative fee)
        $cart->add_fee( 'Discount on cheapest (' . $percentage . '%)', -$discount );
    }
}
add_action( 'woocommerce_cart_calculate_fees', 'action_woocommerce_cart_calculate_fees', 10, 1 );

在 WooCommerce 中成本较低的产品的购物车折扣，除非该产品已经在销售

Cart discount for product that cost less in WooCommerce unless that product is already on sale

wordpress

product

cart

woocommerce

fee