如何在产品购物车中为成本更低的产品申请折扣？
例如：
我的购物车里有两个产品：一个150美元，一个200美元。我只想对价格更低的产品打10%的折扣，在这种情况下是第一个。
我有这个代码，但它只适用于购物车中的第二个产品：
add_filter( 'woocommerce_before_calculate_totals', 'discount_on_2nd_cart_item', 10, 1 );
function discount_on_2nd_cart_item( $cart_object ) {
if ( is_admin() && ! defined( 'DOING_AJAX' ) )
return;
// Initialising
$count = 0;
$discount = 0.10; // 10 %
$discounted = 0;
// Iterating though each cart items
foreach ( $cart_object->get_cart() as $cart_item ) {
$count++;
if( 2 == $count){ // Second item only
$price = $cart_item['data']->get_price(); // product price
$discounted_price = $price - ($price * $discount); // calculation
$discounted = $price - $discounted_price;
// Set the new price
//$cart_item['data']->set_price( $discounted_price );
break; // stop the loop
}
}
$cart_object->add_fee( "Discount (10%) on second product", -$discounted, true );
}
对于购物车费用，您应该使用woocommerce\u Cart\u calculate\u fees专用挂钩，而不是这样：
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 = 10; // 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);
$discount = reset($product_prices_excl_tax) * $percentage / 100;
$cart->add_fee( "Discount on cheapest (".$percentage."%)", -$discount );
}
代码function.php活动子主题（或活动主题）的文件中。测试和工作。
