function getBillingAmount($billing_category_id)
{
if (!is_numeric($billing_category_id)) {
$billing_category_id = 0;
}
$wsBilling = WorkspaceBillings::findOne(array('conditions' => array('project_id = ? AND billing_id = ?', $this->getId(), $billing_category_id)));
if ($wsBilling) {
return $wsBilling->getValue();
} else {
$parent = $this->getParentWorkspace();
if ($parent instanceof Project) {
return $parent->getBillingAmount($billing_category_id);
} else {
$billing_category = BillingCategories::findById($billing_category_id);
if ($billing_category instanceof BillingCategory) {
return $billing_category->getDefaultValue();
} else {
return 0;
}
}
}
}
