// Save the custom field and update all excluded product Ids in option WP settings add_action( 'woocommerce_process_product_meta', 'save_custom_field_general_product_fields', 10, 1 ); function save_custom_field_general_product_fields( $post_id ){ $current_disabled = isset( $_POST['_disabled_for_coupons'] ) ? 'yes' : 'no'; $disabled_products = get_option( '_products_disabled_for_coupons' ); if( empty($disabled_products) ) { if( $current_disabled == 'yes' ) $disabled_products = array( $post_id ); } else { if( $current_disabled == 'yes' ) { $disabled_products[] = $post_id; $disabled_products = array_unique( $disabled_products ); } else { if ( ( $key = array_search( $post_id, $disabled_products ) ) !== false ) unset( $disabled_products[$key] ); } } update_post_meta( $post_id, '_disabled_for_coupons', $current_disabled ); update_option( '_products_disabled_for_coupons', $disabled_products ); } // Make coupons invalid at product level add_filter('woocommerce_coupon_is_valid_for_product', 'set_coupon_validity_for_excluded_products', 12, 4); function set_coupon_validity_for_excluded_products($valid, $product, $coupon, $values ){ if( ! count(get_option( '_products_disabled_for_coupons' )) > 0 ) return $valid; $disabled_products = get_option( '_products_disabled_for_coupons' ); if( in_array( $product->get_id(), $disabled_products ) ) $valid = false; return $valid; } // Set the product discount amount to zero add_filter( 'woocommerce_coupon_get_discount_amount', 'zero_discount_for_excluded_products', 12, 5 ); function zero_discount_for_excluded_products($discount, $discounting_amount, $cart_item, $single, $coupon ){ if( ! count(get_option( '_products_disabled_for_coupons' )) > 0 ) return $discount; $disabled_products = get_option( '_products_disabled_for_coupons' ); if( in_array( $cart_item['product_id'], $disabled_products ) ) $discount = 0; return $discount; dog event | WildWash