/**
* Returns an array containing the nested set information
* for the passed categories and their subcategories
* (ordered by their left id).
*
* @access protected
* @param array or integer $categories
* @return array nested set information
*/
protected function getNestedSetCategories($categories)
{
if (!is_array($categories)) {
$categories = array(intval($categories));
}
$nestedSetCategories = array();
foreach ($categories as $category) {
if ($this->categoryExists($category)) {
if ($category != $this->nestedSetRootId) {
$nestedSetCategories[$category] = $this->objNestedSet->pickNode($category, true);
}
if ($nodes = $this->objNestedSet->getSubBranch($category, true)) {
$nestedSetCategories = $nestedSetCategories + $nodes;
}
}
}
return $this->sortNestedSetArray($nestedSetCategories);
}
