How to get category name by multiple id in Magento 2

Question

I want to get category name using multiple category ids.

I have two category id like :- 3 or 4.Those two id using i am want to category name.

Please help me how to achieve this.

THANKS.

Answer 1

namespace Company\Module\Block;

class CustomBlock extends \Magento\Framework\View\Element\Template 
{
    protected $_categoryFactory;    

    public function __construct(
    \Magento\Catalog\Model\CategoryFactory $categoryFactory,
    \Magento\Framework\View\Element\Template\Context $context,
    ) {
        $this->_categoryFactory = $categoryFactory;
        parent::__construct($context);
    }

    public function getCategoryName($catIds)
    {
        $catNames = [];
        foreach ($catIds as $key => $catId) {
         $category = $this->_categoryFactory->create()->load($catId);
         $catNames[$catId] = $category->getName();
        }
        return $catNames;
    }
    
    public function getAllCatName()
    {
      $catIds = array(3,4);
      $categoryNames = $this->getCategoryName($catIds);
      print_r($categoryNames);die;
    }
}

In phtml file you can call $block->getAllCatName(); Or if you have ids 3,4 in array phtml like $catIds = array(3,4); you can directly call $categoryNames = $block->getCategoryName($catIds);

Answer 2

where you need to get the categories name? phtml? block? Model?

for example, in a phtml file you can inject a viewModel and in that class you can get the categories name.

To get the categories name by multiple ids, you can made a collection filtering by entity_id and selecting only the "name" attribute, or you can instantiate the CategoryRepository and with a loop you can load the categoryModel for every id.

Answer 3

ok, so you need to edit the layout xml (if you need this info on the product page, you need to edit the catalog_product_view.xml). Find the block tag and add this code:

<arguments><argument name="viewModel" xsi:type="object">Vendor\Module\ViewModelFolder\ViewModelClass</argument></arguments>

This class must implement the ArgumentInterface.

In his constructor you can instantiate a CategoryRepository class, like:

protected $categoryRespository;

public function __construct(\Magento\Catalog\Api\CategoryRepositoryInterface $categoryRepository) 
{
    $this->categoryRepository = $categoryRepository;
}

Or you can instantiate the CollectionFactory:

protected $categoryCollectionFactory;

public function __construct(
    \Magento\Catalog\Model\ResourceModel\Category\CollectionFactory $categoryCollectionFactory
) {
    $this->categoryCollectionFactory = $categoryCollectionFactory;
}

After this you need to create a method that accept an array with the ids:

public function getCategoryNameByIds(array $ids = [])
{
    $names = [];
    //for categoryRepository
    foreach ($ids as $id) {
        /** @var \Magento\Catalog\Model\Category $category */
        $category = $this->categoryRepository->get($id);
        $names[$id] = $category->getName();
    }

    //for collectionFactory
    $categoryCollection = $categoryCollectionFactory->create();
    $categoryCollection->addFieldToFilter('entity_id', [in => $ids]);

    // either call getItems() and iterate over it, or do whatever you need
    foreach ($categoryCollection->getItems() as $category) {
        /** @var \Magento\Catalog\Model\Category $category */
        $names[$category->getId()] = $category->getName();
    }
    return $names;
}