Magento 2: How to Get All Parent Category IDs from Current Category ID

categorymagento2

I'm getting the current category Id using Registry like

$categoryId = $this->_registry->registry('current_category')->getId();

and to get the parent categories I tried this

$objectManager = \Magento\Framework\App\ObjectManager::getInstance();
$categoryFactory=$objectManager>get('\Magento\Catalog\Model\CategoryFactory');
$category = $categoryFactory->create()->load($categoryId);
$parentCategories = $category->getParentCategories();

Now when Print_r() this category then it shows me memory limit but I just want to show all the Ids of the parent categories I also tried

$parentCategories = $category->getParentCategories()->getId();

but it shows me an error… how can I get only the Ids of the parent categories? Thanks in advance

Best Answer

Just iterate throu the collection (assuming you have all parent categories in the collection like you posted above - I'm not sure you will get them that way),run foreach:

foreach ($parentCategories as $cat){
  echo $cat->getId();
}

But there is a nice method in the category model called getParentIds(). That should work:

$category->getParentIds();

Related Solutions

Magento – Get subcategories of parent category when FLAT categories enabled

$_category = Mage::getModel('catalog/category')->load(CATEGORY-ID);    
    $_categories = $_category
                    ->getCollection()
                    ->addAttributeToSelect(array('name', 'image', 'description'))
                    ->addIdFilter($_category->getChildren());

    foreach ($_categories as $_category):
       echo $_category->getName();
    endforeach;

Magento – Get child categories tree when Flat Catalog Category is enabled in admin in Magento 2

You can use getChildren to get child category data in your block even Use Flat Catalog Category is enabled.

For example

namespace Custom\Module\Block\World;
class Index extends \Magento\Framework\View\Element\Template
{
    protected $_categoryFactory;
    protected $_category;
    protected $_categoryHelper;
    protected $_categoryRepository;

    public function __construct(
        \Magento\Backend\Block\Template\Context $context,        
        \Magento\Catalog\Model\CategoryFactory $categoryFactory,
        \Magento\Catalog\Helper\Category $categoryHelper,
        \Magento\Catalog\Model\CategoryRepository $categoryRepository,        
        array $data = []
    )
    {
        $this->_categoryFactory = $categoryFactory;        
        parent::__construct($context, $data);
    }
        /**
     * Get category object
     * Using $_categoryFactory
     *
     * @return \Magento\Catalog\Model\Category
     */
    public function getCategory($categoryId) 
    {
        $this->_category = $this->_categoryFactory->create();
        $this->_category->load($categoryId);        
        return $this->_category;
    }


    /**
     * Retrieve children ids comma separated
     *
     * @return string
     */
    public function getChildren($categoryId = false)
    {
        if ($this->_category) {
            return $this->_category->getChildren();
        } else {
            return $this->getCategory($categoryId)->getChildren();
        }        
    }  



}

Inside the phtml template.

$test =  $block->getChildren('20');
echo "<pre>";
print_r($test);

Out put

Reference link for more details.

Recommended to pass classes to constructor as a dependency.

Hope it helps.

Best Answer

Related Solutions

Magento – Get subcategories of parent category when FLAT categories enabled

Magento – Get child categories tree when Flat Catalog Category is enabled in admin in Magento 2

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