/**
* Retrieve categories
*
* @param integer $parent
* @param integer $recursionLevel
* @param boolean|string $sorted
* @param boolean $asCollection
* @param boolean $toLoad
* @return \Magento\Framework\Data\Tree\Node\Collection|\Magento\Catalog\Model\Resource\Category\Collection
*/
public function getCategories($parent, $recursionLevel = 0, $sorted = false, $asCollection = false, $toLoad = true)
{
$tree = $this->_categoryTreeFactory->create();
/* @var $tree \Magento\Catalog\Model\Resource\Category\Tree */
$nodes = $tree->loadNode($parent)->loadChildren($recursionLevel)->getChildren();
$tree->addCollectionData(null, $sorted, $parent, $toLoad, true);
if ($asCollection) {
return $tree->getCollection();
}
return $nodes;
}
/**
* Get category tree
*
* @param int|null $rootNode
* @param bool $reload
* @return \Magento\Framework\Data\Tree\Node
*/
protected function getTree($rootNode = null, $reload = false)
{
if (!$this->categoryTree || $reload) {
if ($rootNode === null) {
$rootNode = $this->storeManager->getStore()->getRootCategoryId();
}
$tree = $this->resourceCategoryTreeFactory->create();
$node = $tree->loadNode($rootNode)->loadChildren();
$tree->addCollectionData(null, false, $rootNode);
$this->categoryTree = $node;
}
return $this->categoryTree;
}
/**
* Retrieve category tree model
*
* @return \Magento\Catalog\Model\Resource\Category\Tree
*/
public function getTreeModel()
{
return $this->_categoryTreeFactory->create();
}