public function decrementUserRealEstate($realEstateID, $quantity)
{
$realEstateParams = array();
$realEstateParams['quantity'] = $quantity * -1;
$conditions = array();
$conditions['user_id'] = $this->id;
$conditions['realestate_id'] = $realEstateID;
$success = ConnectionFactory::updateTableRowRelativeBasic("users_realestates", $realEstateParams, $conditions);
if ($success) {
$success = ConnectionFactory::DeleteZeroAndBelowQuantity("users_realestates");
}
return $success;
}
