/**
* Apply the discount from this or any parent object to
* a given price.
*
* @param ProductCategory|Buyable $obj
* @param $price
* @return bool - was any discount applied?
*/
protected function applyPromoFrom($obj, &$price)
{
if (!$obj->hasValidPromotion($obj)) {
return false;
}
// Apply the price
if ($obj->PromoType == 'Percent') {
$price -= $price * $obj->PromoPercent;
} else {
$price -= $obj->PromoAmount;
}
// there can be issues with the charged total being different
// from the saved Total - sometimes by several cents - if
// we don't round here.
$precision = (int) Config::inst()->get('Order', 'rounding_precision');
$price = round($price, $precision ? $precision : 2);
if ($price < 0) {
$price = 0;
}
return true;
}
