In this post I am going to explain how to get parent category of specific category in magento 2.

1. Using Dependency Injection

Add below code snippet in Block class.

protected $_categoryFactory;
        
public function __construct(
	\Magento\Backend\Block\Template\Context $context,        
	\Magento\Catalog\Model\CategoryFactory $categoryFactory,
	array $data = []
)
{
	$this->_categoryFactory = $categoryFactory;        
	parent::__construct($context, $data);
}

/* Get category object */
public function getCategory($categoryId)
{
	$category = $this->_categoryFactory->create()->load($categoryId);
	return $category;
}

/* Get parent category object  */
public function getParentCategory($categoryId)
{
	return $this->getCategory($categoryId)->getParentCategory();
}

/* Get parent category Id */
public function getParentId($categoryId)
{
	return $this->getCategory($categoryId)->getParentId();
}

/* Get all parent categories ids  */
public function getParentIds($categoryId)
{
	return $this->getCategory($categoryId)->getParentIds();        
}

Add below code snippet in template file.

$categoryId = 10;
 
// Load category by category ID
$category = $block->getCategory($categoryId);

echo "<pre>";
print_r($category->getData());
echo "</pre>";

// Get parent category object
$parentCategoryObj = $block->getParentCategory($categoryId);

echo "<pre>";
print_r($parentCategoryObj->getData());
echo "</pre>";
 
// Get parent category Id
$parentCategoryId = $block->getParentId($categoryId);

echo $parentCategoryId;
 
// Get array of all parent category ids
$parentIdsArray = $block->getParentIds($categoryId);

echo "<pre>";
print_r($parentIdsArray);
echo "</pre>";

2. Using Object Manager

$objectManager =  \Magento\Framework\App\ObjectManager::getInstance();        

$categoryFactory = $objectManager->get('\Magento\Catalog\Model\CategoryFactory');
 
$categoryId = 10;

// Load category by category ID
$category = $categoryFactory->create()->load($categoryId);

echo "<pre>";
print_r($category->getData());
echo "</pre>";
 
// Get parent category object
$parentCategoryObj = $category->getParentCategory($categoryId);

echo "<pre>";
print_r($parentCategoryObj->getData());
echo "</pre>";
 
// Get parent category Id
$parentCategoryId = $category->getParentId($categoryId);

echo $parentCategoryId;
 
// Get array of all parent category ids
$parentIdsArray = $category->getParentIds($categoryId);

echo "<pre>";
print_r($parentIdsArray);
echo "</pre>";

Thats it. Enjoy Magento 2!!

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