I wrote This function to add a 9% extra fee on a gateway just on the checkout page.
Now, I want to exclude some products by ID from increasing additional fees in a function.
How can I simply do this with minimal changes in the code?
add_action( 'woocommerce_cart_calculate_fees', 'add_checkout_fee_for_gateway' );
function add_checkout_fee_for_gateway() {
// Check if we are on the checkout page
if ( is_checkout() ) {
global $woocommerce;
$chosen_gateway = $woocommerce->session->chosen_payment_method;
if ( $chosen_gateway == 'paypal' ) {
$percentage = 0.09;
/* for all products prices + shipping (total price)
$surcharge = ( $woocommerce->cart->cart_contents_total + $woocommerce->cart->shipping_total ) * $percentage;
*/
$surcharge = ( $woocommerce->cart->get_subtotal() ) * $percentage;
$woocommerce->cart->add_fee( '9% value added tax', $surcharge, true, '' );
}
}
}
The code that you are using is a bit outdated since WooCommerce 3.
The following code will add a percentage fee from specific cart items calculated subtotal (excluding some defined products):
add_action( 'woocommerce_cart_calculate_fees', 'add_checkout_fee_for_gateway', 10, 1 );
function add_checkout_fee_for_gateway( $cart ) {
if ( is_admin() && ! defined( 'DOING_AJAX' ) )
return;
// Only on checkout page and for specific payment method ID
if ( is_checkout() && ! is_wc_endpoint_url()
&& WC()->session->get('chosen_payment_method') === 'paypal' ) {
// Here below define the product IDs to be excluded
$excluded_product_ids = array(15, 18);
$percentage_rate = 0.09; // Defined percentage rate
$custom_subtotal = 0; // Initializing
// Loop through cart items
foreach( $cart->get_cart() as $item ) {
// Calculate items subtotal from non excluded products
if( ! in_array($item['product_id'], $excluded_product_ids) ) {
$custom_subtotal += (float) $item['line_subtotal'];
}
}
if ( $custom_subtotal > 0 ) {
$cart->add_fee( __('9% value added tax'), ($custom_subtotal * $percentage_rate), true, '' );
}
}
}
Code goes in functions.php file of your child theme (or in a plugin). Tested and works.