Magento 2 : Override the Category view block file

Override view block using di.xml and add the below code into that file

<preference for="Magento\Catalog\Block\Category\View" type="Vendor\Module\Block\Category\View"/>

1	<preference for="Magento\Catalog\Block\Category\View" type="Vendor\Module\Block\Category\View"/>

Create the View.php file under your custom module with this path Vendor/Module/Block/Category/View.php and add the below code.

<?php

namespace Vendor\Module\Block\Category;

use Magento\Catalog\Api\ProductRepositoryInterface;
use Magento\Catalog\Model\Category;

class View extends \Magento\Catalog\Block\Category\View
{
    protected $_urlInterface;

    public function __construct(
        \Magento\Framework\View\Element\Template\Context $context,
        \Magento\Catalog\Model\Layer\Resolver $layerResolver,
        \Magento\Framework\Registry $registry,
        \Magento\Catalog\Helper\Category $categoryHelper,
        \Magento\Framework\UrlInterface $urlInterface,
        array $data = []
    ) {
        $this->_urlInterface = $urlInterface;
        $this->_categoryHelper = $categoryHelper;
        $this->_catalogLayer = $layerResolver->get();
        $this->_coreRegistry = $registry;
        parent::__construct($context, $layerResolver, $registry, $categoryHelper, $data);
    }

    protected function _prepareLayout()
    {
        parent::_prepareLayout();

        $this->getLayout()->createBlock(\Magento\Catalog\Block\Breadcrumbs::class);

        $category = $this->getCurrentCategory();
        if ($category) {
            $title = $category->getMetaTitle();
            if ($title) {
                $this->pageConfig->getTitle()->set($title);
            }
            $description = $category->getMetaDescription();
            if ($description) {
                $this->pageConfig->setDescription($description);
            }
            $keywords = $category->getMetaKeywords();
            if ($keywords) {
                $this->pageConfig->setKeywords($keywords);
            }
            if ($this->_categoryHelper->canUseCanonicalTag()) {
                $this->pageConfig->addRemotePageAsset(
                    $category->getUrl(),
                    'canonical',
                    ['attributes' => ['rel' => 'canonical']]
                );
            }

            $pageMainTitle = $this->getLayout()->getBlock('page.main.title');
            if ($pageMainTitle) {
                $pageMainTitle->setPageTitle($this->getCurrentCategory()->getName());
            }
        }

        return $this;
    }
}

<?php

namespace Vendor\Module\Block\Category;

use Magento\Catalog\Api\ProductRepositoryInterface;

use Magento\Catalog\Model\Category;

class View extends \Magento\Catalog\Block\Category\View

{

protected $_urlInterface;

public function __construct(

\Magento\Framework\View\Element\Template\Context $context,

\Magento\Catalog\Model\Layer\Resolver $layerResolver,

\Magento\Framework\Registry $registry,

\Magento\Catalog\Helper\Category $categoryHelper,

\Magento\Framework\UrlInterface $urlInterface,

array $data = []

) {

$this->_urlInterface = $urlInterface;

$this->_categoryHelper = $categoryHelper;

$this->_catalogLayer = $layerResolver->get();

$this->_coreRegistry = $registry;

parent::__construct($context, $layerResolver, $registry, $categoryHelper, $data);

}

protected function _prepareLayout()

{

parent::_prepareLayout();

$this->getLayout()->createBlock(\Magento\Catalog\Block\Breadcrumbs::class);

$category = $this->getCurrentCategory();

if ($category) {

$title = $category->getMetaTitle();

if ($title) {

$this->pageConfig->getTitle()->set($title);

}

$description = $category->getMetaDescription();

if ($description) {

$this->pageConfig->setDescription($description);

}

$keywords = $category->getMetaKeywords();

if ($keywords) {

$this->pageConfig->setKeywords($keywords);

}

if ($this->_categoryHelper->canUseCanonicalTag()) {

$this->pageConfig->addRemotePageAsset(

$category->getUrl(),

'canonical',

['attributes' => ['rel' => 'canonical']]

);

}

$pageMainTitle = $this->getLayout()->getBlock('page.main.title');

if ($pageMainTitle) {

$pageMainTitle->setPageTitle($this->getCurrentCategory()->getName());

}

return $this;

}

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