Change payment method title based on selected shipping method in WooCommerce checkout

Question

I`m trying to make a switch on (COD) cash on delivery label if the delivery option is selected

The user has 2 options on delivery:

<input type="radio" name="shipping_method[0]" data-index="0" id="shipping_method_0_samedaycourier724" value="samedaycourier:7:24" class="shipping_method">
<input type="radio" name="shipping_method[0]" data-index="0" id="shipping_method_0_samedaycourier15ln" value="samedaycourier:15:LN" class="shipping_method" checked="checked">

If the value="samedaycourier:15:LN" is checked I want the COD label to be Credit Card on Delivery instead of Cash on Delivery

I copied a similar code and tried to adapt it to my need, unfortunately without the desired result. Any advice?

add_action( 'woocommerce_review_order_before_payment', 'customizing_payment_option', 10, 0 );
function customizing_payment_option(){

$text1  = __( 'Cash on Delivery', 'woocommerce' );
$text2  = __( 'Credit Card on EasyBox', 'woocommerce' );

?>
<script>
    jQuery(function($){

        // 1. Initialising once loaded
        if($('input[name^="shipping_method[0]"]:checked').val() == 'samedaycourier:15:LN' )
            $('input[id^="payment_method_cod"]').text('<?php echo $text2; ?>');
        else
            $('input[id^="payment_method_cod"]').text('<?php echo $text1; ?>');

        // 2. Live event detection:When shipping method is changed
        $( 'form.checkout' ).on( 'change', 'input[name^="shipping_method[0]"]', function() {
            var choosenDeliveryMethod = $('input[name^="shipping_method[0]"]:checked').val(); // Chosen

            if( choosenDeliveryMethod == 'samedaycourier:15:LN' )
                $('input[id^="payment_method_cod"]').text('<?php echo $text2; ?>');
            else 
                $('input[id^="payment_method_cod"]').text('<?php echo $text1; ?>');
        });
    });
</script>
<?php
}

Answer 1

No need to use jQuery, you can use the woocommerce_gateway_title filter hook and WC()->session->get( 'chosen_shipping_methods' )

Adjust $payment_id === '' and the result of $chosen_shipping_methods to your needs

So you get:

function filter_woocommerce_gateway_title( $title, $payment_id ) {
    // Only on checkout page and for COD
    if ( is_checkout() && ! is_wc_endpoint_url() && $payment_id === 'cod' ) {
        // Get chosen shipping methods
        $chosen_shipping_methods = (array) WC()->session->get( 'chosen_shipping_methods' );

        // Compare
        if ( in_array( 'local_pickup:1', $chosen_shipping_methods ) ) {
            $title = __( 'My title', 'woocommerce' );
        } elseif ( in_array( 'lsamedaycourier:7:24', $chosen_shipping_methods ) ) {
            $title = __( 'Credit Card on Delivery', 'woocommerce' );
        } else {
            $title = __( 'Another title', 'woocommerce' );
        }
    }

    return $title;
}
add_filter( 'woocommerce_gateway_title', 'filter_woocommerce_gateway_title', 10, 2 );

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Note: to find the correct $chosen_shipping_methods (ID), you can use (part 2) "For debugging purposes" from this answer