Not able to fatch all category in Magento 2.3.2

[anuragonweb]

Hi all,

i am trying to fatch all the category in magento 2.3.2 but its not working and through the errors. here are code :-

public function __construct(
\Magento\Catalog\Block\Product\Context $context,
\Magento\Catalog\Model\ResourceModel\Product\CollectionFactory $productCollectionFactory,
//\Magento\Catalog\Model\ResourceModel\Category\CollectionFactory $categoryCollectionFactory,
\Magento\Catalog\Model\Product\Visibility $catalogProductVisibility,
\Magento\Framework\App\Http\Context $httpContext,
array $data = []
) {
$this->_productCollectionFactory = $productCollectionFactory;
//$this->_categoryCollectionFactory = $categoryCollectionFactory;
$this->_catalogProductVisibility = $catalogProductVisibility;
$this->httpContext = $httpContext;
$this->_imageHelper = $context->getImageHelper();
$this->_cartHelper = $context->getCartHelper();
parent::__construct(
$context,
$data
);
$this->setCollection($this->getProductCollection());
//$this->setCollections($this->getCategoryCollection());
}

thanks

Anurag Saxena

https://www.artisticbird.com/onlineshops-magento

[Manthan Dave]

Hi @anuragonweb 

I would suggest you to use below code to get all the categories :

protected $_storeManager;
protected $_categoryCollection;

public function __construct(
    \Magento\Store\Model\StoreManagerInterface $storeManager,
    \Magento\Catalog\Model\ResourceModel\Category\CollectionFactory $categoryCollection,
    $data = []
) {
    $this->_storeManager = $storeManager;
    $this->_categoryCollection = $categoryCollection;
    parent::__construct($data);
}

public function getCategories(){
     $categories = $this->_categoryCollection->create()                              
         ->addAttributeToSelect('*')
         ->setStore($this->_storeManager->getStore()); //categories from current store will be fetched

     foreach ($categories as $category){
         $category->getName();
     }
 }

Hope it helps !

[anuragonweb]

its not working brother

public function __construct(

\Magento\Catalog\Block\Product\Context $context,

\Magento\Catalog\Model\ResourceModel\Product\CollectionFactory $productCollectionFactory,

\Magento\Catalog\Model\ResourceModel\Category\CollectionFactory $categoryCollectionFactory,

\Magento\Catalog\Model\Product\Visibility $catalogProductVisibility,

\Magento\Framework\App\Http\Context $httpContext,

\artisticbird\ShopByBrand\Model\BrandFactory $brandFactory,

array $data = []

) {

$this->_productCollectionFactory = $productCollectionFactory;

$this->_categoryCollectionFactory = $categoryCollectionFactory;

$this->_catalogProductVisibility = $catalogProductVisibility;

$this->httpContext = $httpContext;

$this->_imageHelper = $context->getImageHelper();

$this->_brandFactory = $brandFactory;

$this->_cartHelper = $context->getCartHelper();

parent::__construct(

$context,

$data

);

        $this->setCollection($this->getProductCollection());

       $this->setCollections($this->getCategoryCollection());

}