WooCommerce coupon settings allow you to define allowed products (or product categories). What’s missing, however, is the other way around: how to set up a product so that it can never be discounted?
Thankfully, a handy WooCommerce filter comes to the rescue (“woocommerce_coupon_is_valid_for_product“) and we can therefore make all coupons “invalid” when a given product is in the cart. Enjoy!
Here’s what happens
PHP Snippet: Disable All Coupons for a Single Product ID @ WooCommerce Cart / Checkout Page
/**
* @snippet Exclude Product From All Coupons - WooCommerce
* @how-to Get tutoraspire.com FREE
* @author Tutor Aspire
* @compatible WooCommerce 5.1
* @donate $9 https://tutoraspire.com
*/
add_filter( 'woocommerce_coupon_is_valid_for_product', 'tutoraspire_exclude_product_from_product_promotions_frontend', 9999, 4 );
function tutoraspire_exclude_product_from_product_promotions_frontend( $valid, $product, $coupon, $values ) {
// PRODUCT ID HERE (E.G. 12345)
if ( 12345 == $product->get_id() ) {
$valid = false;
}
return $valid;
}
