/** clears the cart/coupon data and re-calcs totals */
function clear_cache() {
self::$cart_contents = array();
self::$applied_coupons = array();
unset( $_SESSION['cart'] );
unset( $_SESSION['coupons'] );
self::calculate_totals();
}
/**
* Applies a coupon code
*
* @param string $coupon_code The code to apply
* @return bool True if the coupon is applied, false if it does not exist or cannot be applied
*/
public static function add_discount($coupon_code)
{
if (!self::is_valid_coupon($coupon_code)) {
return false;
}
// Check for other individual_use coupons before adding this coupon.
foreach (self::get_coupons() as $code) {
$current = JS_Coupons::get_coupon($code);
if ($current['individual_use']) {
jigoshop::add_error(__("There is already an 'individual use' coupon on the Cart. No other coupons can be added until it is removed.", 'jigoshop'));
return false;
}
}
$coupon = JS_Coupons::get_coupon($coupon_code);
// Remove other coupons if this one is individual_use.
if ($coupon['individual_use']) {
if (!empty(self::$applied_coupons)) {
jigoshop::add_error(__("This is an 'individual use' coupon. All other discount coupons have been removed.", 'jigoshop'));
self::$applied_coupons = array();
}
}
// check if coupon is already applied and only add a new coupon
if (!self::has_discount($coupon_code) && !empty($_POST['coupon_code'])) {
self::$applied_coupons[] = $coupon_code;
}
// select free shipping method
if ($coupon['free_shipping']) {
if (Jigoshop_Base::get_options()->get('jigoshop_select_free_shipping_method') == 'yes') {
jigoshop_session::instance()->chosen_shipping_method_id = 'free_shipping';
}
}
jigoshop_session::instance()->coupons = self::$applied_coupons;
jigoshop::add_message(__('Discount coupon applied successfully.', 'jigoshop'));
return true;
}
