Magento 2 – Extending Product View Fails

blocksextendmagento2product

I would like to extend \Magento\Catalog\Block\Product\View but I get 404

<?php
namespace Vendor\Custom\Block;

use Magento\Catalog\Model\ProductFactory;
use Magento\Catalog\Block\Product\AbstractProduct;
use Magento\Framework\View\Element\Template;
use Magento\Catalog\Api\ProductRepositoryInterface;
use Magento\Catalog\Model\Product;

class MyProducts extends \Magento\Catalog\Block\Product\View
{
    protected $productFactory;

    protected  $_coreRegistry;
    /**
     * @param \Magento\Catalog\Block\Product\Context $context
     * @param array $data
     */
    public function __construct(
        \Magento\Catalog\Block\Product\Context $context,
        ProductFactory $productFactory
    ) {
        $this->productFactory = $productFactory;
        $this->_coreRegistry = $context->getRegistry();

        parent::__construct($context);
    }

}

?>

than I created in my module a di.xml which looks like

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/ObjectManager/etc/config.xsd">
    <preference for="Magento\Catalog\Block\Product\View" type="Vendor\Custom\Block\MyProducts"/>
</config>

than I reference in product view as follows

<referenceBlock name="product.info.details">
            <block class="Vendor\Custom\Block\Variants" name="variants.tab" template="Vendor_Custom::variants.phtml" group="detailed_info">
                <arguments>
                    <argument translate="true" name="title" xsi:type="string">Product variations</argument>
                </arguments>
            </block>
        </referenceBlock>

Best Answer

Your constructor does not respect the parameters order of the parent class \Magento\Catalog\Block\Product\View, which looks like this:

public function __construct(
    \Magento\Catalog\Block\Product\Context $context,
    \Magento\Framework\Url\EncoderInterface $urlEncoder,
    \Magento\Framework\Json\EncoderInterface $jsonEncoder,
    \Magento\Framework\Stdlib\StringUtils $string,
    \Magento\Catalog\Helper\Product $productHelper,
    \Magento\Catalog\Model\ProductTypes\ConfigInterface $productTypeConfig,
    \Magento\Framework\Locale\FormatInterface $localeFormat,
    \Magento\Customer\Model\Session $customerSession,
    ProductRepositoryInterface $productRepository,
    \Magento\Framework\Pricing\PriceCurrencyInterface $priceCurrency,
    array $data = []
) {
    $this->_productHelper = $productHelper;
    $this->urlEncoder = $urlEncoder;
    $this->_jsonEncoder = $jsonEncoder;
    $this->productTypeConfig = $productTypeConfig;
    $this->string = $string;
    $this->_localeFormat = $localeFormat;
    $this->customerSession = $customerSession;
    $this->productRepository = $productRepository;
    $this->priceCurrency = $priceCurrency;
    parent::__construct(
        $context,
        $data
    );
}

So to fix your class, your constructor must look like this:

public function __construct(
    \Magento\Catalog\Block\Product\Context $context,
    \Magento\Framework\Url\EncoderInterface $urlEncoder,
    \Magento\Framework\Json\EncoderInterface $jsonEncoder,
    \Magento\Framework\Stdlib\StringUtils $string,
    \Magento\Catalog\Helper\Product $productHelper,
    \Magento\Catalog\Model\ProductTypes\ConfigInterface $productTypeConfig,
    \Magento\Framework\Locale\FormatInterface $localeFormat,
    \Magento\Customer\Model\Session $customerSession,
    ProductRepositoryInterface $productRepository,
    \Magento\Framework\Pricing\PriceCurrencyInterface $priceCurrency,
    ProductFactory $productFactory
    array $data = []
) {
    $this->productFactory = $productFactory;
    $this->_coreRegistry = $context->getRegistry();
    parent::__construct(
        $context,
        $urlEncoder,
        $jsonEncoder,
        $string,
        $productHelper,
        $productTypeConfig,
        $localeFormat,
        $customerSession,
        $productRepository,
        $priceCurrency,
        $data
    );
}

Related Solutions

Magento 2 – How to Rewrite TierPrice Block

Suppose package:Learning and module: Custom

Module.xml looks like

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../lib/internal/Magento/Framework/Module/etc/module.xsd">
    <module name="Learning_Custom" setup_version="2.0.0">
        <sequence>
            <module name="Magento_Catalog"/>
        </sequence>
    </module>
</config>

And then create a layout xml following path -> app/code/Learning/Custom/view/frontend/layout/catalog_product_prices.xml

<layout xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="../../../../../../../lib/internal/Magento/Framework/View/Layout/etc/layout_generic.xsd">
    <referenceBlock name="render.product.prices">
        <arguments>
            <argument name="default" xsi:type="array">
                <item name="prices" xsi:type="array">
                    <item name="tier_price" xsi:type="array">
                        <item name="render_template" xsi:type="string">Learning_Custom::product/price/tier_prices.phtml
                    </item>
                </item>
            </argument>
        </arguments>
    </referenceBlock>
</layout>

Create template inside your module or copy base template file inside your module path should be -> app/code/Learning/Custom/view/frontend/templates/product/price/tier_prices.phtml

Magento 2 – Create Custom Block Without Module

Try bellow block code

<?php
/**
 * Copyright Â© 2016 Magento. All rights reserved.
 * See COPYING.txt for license details.
 */
namespace Magento\Catalog\Block\Product;

use Magento\Customer\Model\Context as CustomerContext;

/**
 * New products block
 *
 * @SuppressWarnings(PHPMD.LongVariable)
 */
class Special extends \Magento\Catalog\Block\Product\AbstractProduct implements
    \Magento\Framework\DataObject\IdentityInterface
{
    /**
     * Default value for products count that will be shown
     */
    const DEFAULT_PRODUCTS_COUNT = 10;

    /**
     * Products count
     *
     * @var int
     */
    protected $_productsCount;

    /**
     * @var \Magento\Framework\App\Http\Context
     */
    protected $httpContext;

    /**
     * Catalog product visibility
     *
     * @var \Magento\Catalog\Model\Product\Visibility
     */
    protected $_catalogProductVisibility;

    /**
     * Product collection factory
     *
     * @var \Magento\Catalog\Model\ResourceModel\Product\CollectionFactory
     */
    protected $_productCollectionFactory;

    /**
     * @param Context $context
     * @param \Magento\Catalog\Model\ResourceModel\Product\CollectionFactory $productCollectionFactory
     * @param \Magento\Catalog\Model\Product\Visibility $catalogProductVisibility
     * @param \Magento\Framework\App\Http\Context $httpContext
     * @param array $data
     */
    public function __construct(
        \Magento\Catalog\Block\Product\Context $context,
        \Magento\Catalog\Model\ResourceModel\Product\CollectionFactory $productCollectionFactory,
        \Magento\Catalog\Model\Product\Visibility $catalogProductVisibility,
        \Magento\Framework\App\Http\Context $httpContext,
        array $data = []
    ) {
        $this->_productCollectionFactory = $productCollectionFactory;
        $this->_catalogProductVisibility = $catalogProductVisibility;
        $this->httpContext = $httpContext;
        parent::__construct(
            $context,
            $data
        );
    }

    /**
     * Initialize block's cache
     *
     * @return void
     */
    protected function _construct()
    {
        parent::_construct();
        $this->addColumnCountLayoutDepend('empty', 6)
            ->addColumnCountLayoutDepend('1column', 5)
            ->addColumnCountLayoutDepend('2columns-left', 4)
            ->addColumnCountLayoutDepend('2columns-right', 4)
            ->addColumnCountLayoutDepend('3columns', 3);

        $this->addData(
            ['cache_lifetime' => 86400, 'cache_tags' => [\Magento\Catalog\Model\Product::CACHE_TAG]]
        );
    }

    /**
     * Get Key pieces for caching block content
     *
     * @return array
     */
    public function getCacheKeyInfo()
    {
        return [
           'CATALOG_PRODUCT_SPECIAL',
           $this->_storeManager->getStore()->getId(),
           $this->_design->getDesignTheme()->getId(),
           $this->httpContext->getValue(CustomerContext::CONTEXT_GROUP),
           'template' => $this->getTemplate(),
           $this->getProductsCount()
        ];
    }

    /**
     * Prepare and return product collection
     *
     * @return \Magento\Catalog\Model\ResourceModel\Product\Collection|Object|\Magento\Framework\Data\Collection
     */
    protected function _getProductCollection()
    {
        $todayStartOfDayDate = $this->_localeDate->date()->setTime(0, 0, 0)->format('Y-m-d H:i:s');
        $todayEndOfDayDate = $this->_localeDate->date()->setTime(23, 59, 59)->format('Y-m-d H:i:s');

        /** @var $collection \Magento\Catalog\Model\ResourceModel\Product\Collection */
        $collection = $this->_productCollectionFactory->create();
        $collection->setVisibility($this->_catalogProductVisibility->getVisibleInCatalogIds());

        $collection = $this->_addProductAttributesAndPrices(
            $collection
        )->addStoreFilter()->addAttributeToFilter(
            'news_from_date',
            [
                'or' => [
                    0 => ['date' => true, 'to' => $todayEndOfDayDate],
                    1 => ['is' => new \Zend_Db_Expr('null')],
                ]
            ],
            'left'
        )->addAttributeToFilter(
            'news_to_date',
            [
                'or' => [
                    0 => ['date' => true, 'from' => $todayStartOfDayDate],
                    1 => ['is' => new \Zend_Db_Expr('null')],
                ]
            ],
            'left'
        )->addAttributeToFilter(
            [
                ['attribute' => 'news_from_date', 'is' => new \Zend_Db_Expr('not null')],
                ['attribute' => 'news_to_date', 'is' => new \Zend_Db_Expr('not null')],
            ]
        )->addAttributeToSort(
            'news_from_date',
            'desc'
        )->setPageSize(
            $this->getProductsCount()
        )->setCurPage(
            1
        );

        return $collection;
    }

    /**
     * Prepare collection with new products
     *
     * @return \Magento\Framework\View\Element\AbstractBlock
     */
    protected function _beforeToHtml()
    {
        $this->setProductCollection($this->_getProductCollection());
        return parent::_beforeToHtml();
    }

    /**
     * Set how much product should be displayed at once.
     *
     * @param int $count
     * @return $this
     */
    public function setProductsCount($count)
    {
        $this->_productsCount = $count;
        return $this;
    }

    /**
     * Get how much products should be displayed at once.
     *
     * @return int
     */
    public function getProductsCount()
    {
        if (null === $this->_productsCount) {
            $this->_productsCount = self::DEFAULT_PRODUCTS_COUNT;
        }
        return $this->_productsCount;
    }

    /**
     * Return identifiers for produced content
     *
     * @return array
     */
    public function getIdentities()
    {
        return [\Magento\Catalog\Model\Product::CACHE_TAG];
    }
}

Note: after run bellow command

php bin/magento setup:upgrade –keep-generated
php bin/magento setup:static-content:deploy

Best Answer

Related Solutions

Magento 2 – How to Rewrite TierPrice Block

Magento 2 – Create Custom Block Without Module

Related Topic