saving new category programmatically with setPath

Question

Now this is the sort of problem I would help others with but I am flummoxed. I am creating new categories in an import routine, e.g.

$this->magObject = Mage::getModel("catalog/category");
$this->magObject->setName($item["name"]);
$this->magObject->setData("agilityId",$item["id"]);
$this->magObject->setIsActive($this->isActive);
$this->magObject->setIsAnchor($this->isAnchor);
$this->magObject->setPageLayout($this->pageLayout);
$this->magObject->setStoreId(Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID)); 
//$this->magObject->setPath ("1/2/6") ); //actually got by getting path of specific required parent
$this->magObject->save();

Without the setPath it saves fine, but with the wrong path (obviously). When the setPath is included, nothing happens. I know that there are devious magento elements at work that prevent writing to _entity tables unless certain circumstances are met but I thought I was meeting them . I am already performing the usual

define("ADMIN_STORE_ID",1);
//...
Mage::app();
Mage::setIsDeveloperMode(true);
Mage::app()->setCurrentStore(Mage::getModel('core/store')->load(Mage_Core_Model_App::ADMIN_STORE_ID));

at the start but in this instance it just is not working. I have similar scripts on other sites that do work. Only difference with this site is that there are multiple store fronts

3 UK
7 Spanish
5 German
6 French
1 Default Store View

Anyone spot something obvious that I am missing, whilst I still have some hair left?

Oh this is using Magento 1.9.1.1.

Answer 1

You are not supposed to set the path. This is calculated based on the parent. Same goes for the level.
Instead you should set the parent id.

So you can do this:

$this->magObject = Mage::getModel("catalog/category");
$this->magObject->setName($item["name"]);
$this->magObject->setData("agilityId",$item["id"]);
$this->magObject->setIsActive($this->isActive);
$this->magObject->setIsAnchor($this->isAnchor);
$this->magObject->setPageLayout($this->pageLayout);
$this->magObject->setStoreId(Mage::app()->setCurrentStore(Mage_Core_Model_App::ADMIN_STORE_ID)); 
$this->magObject->setParentId(2);
$this->magObject->save();