finalmente sono riuscito a risolvere questo grattacapo.
Allora, sono ritornato ad usare il modulo di spedizione a seconda della zona, visto che mi sembrava strano che non riuscivo a far funzionare un modulo apposta per quello.
Girovagando sul forum di virtuemart, quello inglese, sono riuscito a trovare il modulo con il codice corretto per farlo funzionare, che scrivo di seguito:
<?php
if( !defined( '_VALID_MOS' ) && !defined( '_JEXEC' ) ) die( 'Direct Access to '.basename(__FILE__).' is not allowed.' );
/**
*
* @version $Id: zone_shipping.php 1589 2008-12-08 20:27:20Z soeren_nb $
* @package VirtueMart
* @subpackage shipping
* @copyright Copyright (C) 2004-2008 soeren - All rights reserved.
* @license
http://www.gnu.org/copyleft/gpl.html GNU/GPL, see LICENSE.php
* VirtueMart is free software. This version may have been modified pursuant
* to the GNU General Public License, and as distributed it includes or
* is derivative of works licensed under the GNU General Public License or
* other free or open source software licenses.
* See /administrator/components/com_virtuemart/COPYRIGHT.php for copyright notices and details.
*
*
http://virtuemart.net*/
/**
* Welcome To The Shipping Zone =]
* @copyright (C) 2000 - 2004 devcompany.com All rights reserved.
* @author Mike Wattier - geek@devcompany.com
*/
class zone_shipping {
var $classname = "zone_shipping";
/**************************************************************************
** name: list_rates($d)
** created by: mwattier <geek@devcompany.com>
** description: Get the rate according to what is in the basket AND
** the zone charge unless it hits the limit, then return that
**
** parameters: $ship_to_info_id - Where are we shipping to
** $zone_qty - This is what we use to see if we need to apply
** the limit or a per item cost
** returns: the cost to ship this order
***************************************************************************/
function list_rates( &$d ) {
global $CURRENCY_DISPLAY;
$db = new ps_DB;
$q = "SELECT country FROM #__{vm}_user_info WHERE ";
$q .= "user_info_id='". $d["ship_to_info_id"] . "'";
$db->query($q);
$db->next_record();
$country = $db->f("country");
$q2 = "SELECT country_name, zone_id FROM #__{vm}_country WHERE country_3_code='$country' ";
$db->query($q2);
$db->next_record();
$the_zone = $db->f("zone_id");
$country_name = $db->f("country_name");
if ( $_SESSION['auth']['show_price_including_tax'] != 1 ) {
$taxrate = 1;
}
else {
$taxrate = $this->get_tax_rate( $the_zone ) + 1;
}
$q3 = 'SELECT * FROM #__{vm}_zone_shipping WHERE zone_id ='.(int)$the_zone;
$db->query($q3);
$db->next_record();
$cost_low = $db->f("zone_cost") * $d["zone_qty"];
if($cost_low < $db->f("zone_limit")) {
$rate = $cost_low;
}
else {
$rate = $db->f("zone_limit");
}
$rate *= $taxrate;
$rate = $GLOBALS['CURRENCY']->convert( $rate );
// THE ORDER OF THOSE VALUES IS IMPORTANT:
// carrier_name|rate_name|totalshippingcosts|rate_id
$value = urlencode(__CLASS__."|Zone Shipping $country_name|".$country."|".$rate."|".$the_zone);
$_SESSION[$value] = "1";
$string = "<input type=\"radio\" checked=\"checked\" name=\"shipping_rate_id\" value=\"$value\" />";
$string .= "La spesa di spedizione per $country_name è di: <strong>". $CURRENCY_DISPLAY->getFullValue($rate )."</strong>";
echo $string;
}
function get_rate( &$d ) {
$shipping_rate_id = vmGet($_REQUEST,"shipping_rate_id");
$zone_arr = explode("|", urldecode(urldecode($shipping_rate_id)) );
$order_shipping = $zone_arr[3];
return $order_shipping;
}
function get_tax_rate( $zone_id=0 ) {
$db = new ps_DB();
if( $zone_id == 0 ) {
$shipping_rate_id = vmGet($_REQUEST,"shipping_rate_id");
$zone_arr = explode("|", urldecode(urldecode($shipping_rate_id)) );
$zone_id = (int)$zone_arr[4];
}
$db->query( "SELECT tax_rate FROM #__{vm}_zone_shipping,#__{vm}_tax_rate WHERE zone_id='$zone_id' AND zone_tax_rate=tax_rate_id" );
$db->next_record();
if( $db->f('tax_rate') )
return $db->f('tax_rate');
else
return 0;
}
/**
* Validate this Shipping method by checking if the SESSION contains the key
* @returns boolean False when the Shipping method is not in the SESSION
*/
function validate( $d ) {
$shipping_rate_id = vmGet($_REQUEST,"shipping_rate_id");
if( array_key_exists( $shipping_rate_id, $_SESSION ))
return true;
else
return false;
}
}
?>
