Code-Snippets-Functions/Execute a function on a child site/WooCommerce/clear-cart-on-currency-switcher-change.txt

// The jQuery AJAX enqueued code
add_action('template_redirect', 'currency_change_trigger_clear_cart_js' );
function currency_change_trigger_clear_cart_js() {
    wc_enqueue_js( "jQuery( function($){
        $(document.body).on('change', '#alg_currency_select', function() {
            $.ajax({
                url: '" . admin_url('/admin-ajax.php') . "',
                type: 'POST',
                data: {
                    'action': 'currency_change_clear_cart'
                },
                success: function(response) {
                    if( response == 'cleared' ) {
                        $(document.body).trigger('wc_fragment_refresh'); // Refresh cart
                    }
                    // console.log(response);
                }
            });
        });
    });" );
}

// PHP AJAX receiver: Empty cart
add_action( 'wp_ajax_currency_change_clear_cart', 'currency_change_clear_cart' );
add_action( 'wp_ajax_nopriv_currency_change_clear_cart', 'currency_change_clear_cart' );
function currency_change_clear_cart() { 
    if( count(WC()->cart->get_cart()) > 0 ) {
        WC()->cart->empty_cart();   
        echo 'cleared';
    }
    die();   
}