如果WooCommerce购物车至少包含X个产品，则自动添加百分比折扣

Question

我正在尝试创建一个自动折扣，当购物车至少包含三种或更多产品时，该折扣就会生效。

如果是，无论客户是否登录，都应提供10%的折扣。

这是我试图开始工作的代码(没有成功(

add_action( 'woocommerce_cart_calculate_fees', 'wc_discount_when_more_than_three', 10, 1 );
function wc_discount_when_more_than_three( $cart ) {
if ( is_admin() && ! defined( 'DOING_AJAX' ) )
return;
$percentage = 10; // 10% discount when cart has a minimum of three products
$discount = 0;
// check all cart items
foreach ( $cart->get_cart() as $cart_item ) {
// when quantity is more than 3
if( $cart_item['quantity'] > 3 ) {
// give 10% discount on the subtotal
$discount = $percentage / 100;
}
}

if( $discount > 0 )
$cart->add_fee( __( '10% OFF', 'woocommerce' ) , -$discount );
}

Answer 1

这取决于您是想计算购物车中的产品数量还是产品数量(内容(。

在我的回答中，我已经说明了两者，根据您的需要取消注释/删除/调整。

function action_woocommerce_cart_calculate_fees( $cart ) {
if ( is_admin() && ! defined( 'DOING_AJAX' ) )
return;

// Percentage
$percentage = 10;
/* Count contents in cart
*
* Product A: quantity in cart: 4 
* Product B: quantity in cart: 1 
* Product C: quantity in cart: 2
*
* count = 7
*
*/
//$count = $cart->cart_contents_count;

/* Count products in cart
*
* Product A
* Product B 
* Product C
*
* count = 3
*/
$count = count( $cart->get_cart() );

// Greater than
if ( $count > 3 ) {
// Get subtotal
$subtotal = $cart->subtotal;

// Calculate
$discount = ( $subtotal / 100 ) * $percentage;

// Give % discount on the subtotal
$cart->add_fee( sprintf( __( '%s OFF', 'woocommerce'), $percentage . '%' ), -$discount );
}
}
add_action( 'woocommerce_cart_calculate_fees', 'action_woocommerce_cart_calculate_fees', 10, 1 );