How to Get Categories from Specific Product in Magento 2?

Sometimes you might need to collect the entire product list or product category from a specific product you are seeing. A quick solution can be used to acquire a product category without going back and forth within your website. You’ll get the categories from any product you want in a time-saving and accurate manner.

Now let’s see how to get categories from specific products in Magento 2. This method enables you to get the list from current or any product as you need.

At first, you need to open the block class of my custom module (Mageplaza_HelloWorld), then inject the object of \Magento\Catalog\Model\ResourceModel\Category\CollectionFactory, \Magento\Catalog\Model\ProductRepository and \Magento\Framework\Registry classes in the constructor of that block class.

app/code/Mageplaza/HelloWorld/Block/HelloWorld.php

<?php
namespace Mageplaza\HelloWorld\Block;
class HelloWorld extends \Magento\Framework\View\Element\Template
{    
    protected $_categoryCollectionFactory;
    protected $_productRepository;
    protected $_registry;
        
    public function __construct(
        \Magento\Backend\Block\Template\Context $context,        
        \Magento\Catalog\Model\ResourceModel\Category\CollectionFactory $categoryCollectionFactory,
        \Magento\Catalog\Model\ProductRepository $productRepository,
        \Magento\Framework\Registry $registry,
        array $data = []
        )
        {
            $this->_categoryCollectionFactory = $categoryCollectionFactory;
            $this->_productRepository = $productRepository;
            $this->_registry = $registry;
            parent::__construct($context, $data);
    }
    
    /**
     * Get category collection
     *
     * @param bool $isActive
     * @param bool|int $level
     * @param bool|string $sortBy
     * @param bool|int $pageSize
     * @return \Magento\Catalog\Model\ResourceModel\Category\Collection or array
     */
    public function getCategoryCollection($isActive = true, $level = false, $sortBy = false, $pageSize = false)
    {
        $collection = $this->_categoryCollectionFactory->create();
        $collection->addAttributeToSelect('*');        
        
        // select only active categories
        if ($isActive) {
            $collection->addIsActiveFilter();
        }
                
        // select categories of certain level
        if ($level) {
            $collection->addLevelFilter($level);
        }
        
        // sort categories by some value
        if ($sortBy) {
            $collection->addOrderField($sortBy);
        }
        
        // select certain number of categories
        if ($pageSize) {
            $collection->setPageSize($pageSize); 
        }    
        
        return $collection;
    }
    
    public function getProductById($id)
    {        
        return $this->_productRepository->getById($id);
    }
    
    public function getCurrentProduct()
    {        
        return $this->_registry->registry('current_product');
    }
}
?>

In case you want to work with the current product, the getCurrentProduct() funciton is active. And if from any specific item, please enable getProductById($id) function. After that, you can retrieve the collection of the category from the category IDs which are linked to that product. In the .phtml file, you need to add the following code snippet:

$productId = 1; // YOUR PRODUCT ID
$product = $block->getProductById($productId);
 
// for current product
// $product = $block->getCurrentProduct();
 
$categoryIds = $product->getCategoryIds();
 
$categories = $block->getCategoryCollection()
                    ->addAttributeToFilter('entity_id', $categoryIds);
                    
foreach ($categories as $category) {
    echo $category->getName() . '<br>';
}


Magento 2 extensions

Magento 2 extensions

Allow you to achieve more with your online store

Check it out!


Conclusion

Those are all things you will use to retrieve categories from specific products in Magento 2. Following the above steps makes it easier and quicker for you to get things done. It saves time and doesn’t affect any existing product setup on your website. Thanks for your reading and please comment below if there is any trouble with that.

Recommend Topics

Image Description
Vinh Jacker
With over a decade of experience crafting innovative tech solutions for ecommerce businesses built on Magento, Jacker is the mastermind behind our secure and well-functioned extensions. With his expertise in building user-friendly interfaces and robust back-end systems, Mageplaza was able to deliver exceptional Magento solutions and services for over 122K+ customers around the world.
Previous Get a block from template file `.phtml`
Next Get currency data: code, rate, symbol
One Step Checkout for Magento 2 by Mageplaza

People also searched for

  • magento 2 get categories specific product
  • magento 2 get product categories
  • magento 2 get product category
  • magento 2 get product category name
  • get product categories magento 2
  • magento 2 get category from product
  • magento 2 product get category
  • magento 2 get category
  • magento 2 get category name by product id
  • magento 2 get categories of product
  • magento 2 get category collection
  • magento 2 get category collection by id
  • magento 2 get category path
  • magento 2 get product category path
  • magento 2 get category by product id
  • magento 2 get category name by id
  • magento 2 get product category id
  • magento 2 get category by id
  • magento 2 get category name
  • magento 2 get product collection by category id using object manager
  • how to get category id in magento 2
  • magento 2 get parent category
  • magento 2 rest api get all products of a category
  • magento 2 get category by name
  • 2.3.x, 2.4.x
x