[solved]How to Change Google Checkout Rounding Policy

[jadess]

Just discovered a problem.

 

Say my taxes are $2.625.

Prestashop rounds it to $2.63.

 

However, when one pays with Google Checkout, Google Checkout rounds it to $2.62.

So when the order is submitted, a payment error is thrown.

 

Did some research and came across this - http://code.google.c...ing_Policy.html

 

I'm guessing the problem is I need "HALF UP" rounding mode but Google Checkout isn't using it.

Does anyone know how to modify the GC module so I can use Half Up rounding mode?

[jadess]

I think I got it..

 

In googlecart.php within /modules/gcheckout/lbrary/..

 

replaced theses lines:

 

  if (($this->rounding_mode != "") && ($this->rounding_rule != "")) {
    $xml_data->Push('rounding-policy');
    $xml_data->Element('mode', $this->rounding_mode);	   
    $xml_data->Element('rule', $this->rounding_rule);
    $xml_data->Pop('rounding-policy');
  }

 

with this:

 

 $xml_data->Push('rounding-policy');
$xml_data->Element('mode', 'HALF_UP');
$xml_data->Element('rule', 'TOTAL');
$xml_data->Pop('rounding-policy');