Hide custom shipping fee cost if the value is 0 in Woocommerce

Question

In Woocommerce I have added an additional shipping cost to the cart using the fee API.

My code is:

add_action( 'woocommerce_cart_calculate_fees', 'pt_add_handling_fee' );
function pt_add_handling_fee() {

    $title = 'Maggiorazione Isole & Calabria';

    global $woocommerce;
    $peso_totale = $woocommerce->cart->cart_contents_weight;
    $provincia = $woocommerce->customer->get_shipping_state();
    // echo 'weight'.$woocommerce->cart->cart_contents_weight;
    // echo 'price'.$woocommerce->cart->subtotal;

    // Maggiorazione 5€ ogni 100kg per la Sardegna
    if ($peso_totale > 99 && ($provincia == "CA" or $provincia == "NU")) {
        $fee = $peso_totale / 100 * 5;
    }
    // Maggiorazione 3€ ogni 100kg per la Sicilia
    if ($peso_totale > 99 && ($provincia == "AG" or $provincia == "CL")) {
        $fee = $peso_totale / 100 * 3;
    }
    // Maggiorazione 2€ ogni 100kg per la Calabria
    if ($peso_totale > 99 && ($provincia == "CZ" or $provincia == "CS")) {
        $fee = $peso_totale / 100 * 2;
    }

     $woocommerce->cart->add_fee( $title, $fee, TRUE, 'standard' );
}

So I apply a surcharge for some provinces, if the total weight is greater than 99 kg.

But the problem is that for other provinces, the fee is still applied with a value of "0 €".

How to make this fee applied only for the defined provinces, when the total cart weight is over 99 Kg?

It's possible? Any help is appreciated.

Answer 1

Your code is a bit outdated and woocommerce_cart_calculate_fees action hook has the WC_Cart object as available argument.

global $woocommerce with $woocommerce->cart or $woocommerce->customer are now simply replaced by:

• WC()->cart (the instance of the WC_Cart object)
• WC()->customer (the instance of the WC_Customer object)

To make the fee applied only for your specific conditions, try this revisited code:

add_action( 'woocommerce_cart_calculate_fees', 'conditional_shipping_surcharge', 10, 1 );
function conditional_shipping_surcharge( $cart ) {

    $targeted_weight = 100; // Define the starting targeted weight
    $cart_weight     = $cart->get_cart_contents_weight();
    $shipping_state  = WC()->customer->get_shipping_state();
    $percent         = 0; // Initializing

    if ( $cart_weight >= $targeted_weight ) {
        // 5 € of surcharge per 100kg for Sardinia
        if ( in_array( $shipping_state, array('CA', 'NU') ) ) {
            $percent = 5;
        }
        // 3 € of surcharge per 100kg for Sicily
        elseif ( in_array( $shipping_state, array('AG', 'CL') ) ) {
            $percent = 3;
        }
        // 2 € of surcharge per 100kg for Calabria
        elseif ( in_array( $shipping_state, array('CZ', 'CS') ) ) {
            $percent = 2;
        }
    }

    if( $percent > 0 ){
        // Fee calculation
        $fee = $cart_weight * $percent / 100;

        // Add calculated fee (Taxable for "standart" default tax class)
        $cart->add_fee( __("Maggiorazione Isole & Calabria", "woocommerce"), $fee, true );
    }
}

Code goes in function.php file of your active child theme (or active theme). Tested and works.