Magento – Magento 2 – Product images from custom block

magento2product-images

I have 2 custom blocks, one is loading a product collection from category ID and another one loading a single product from product ID.

My blocks extends the core Magento product list block (\Magento\Catalog\Block\Product\ListProduct).

My template is also a duplicate of the core template.

When calling $block->getImage($_product, $image); It throws an error.

Unable to resolve the source file for 'frontend/_view/en_GB/Magento_Catalog/images/product/placeholder/.jpg'

I've been debugging this for quite a while and can't get to the bottom of it.

When comparing it to the collection on a category list page everything seems identical. The products are the same and have all the same data (including an image).

Any suggestions would be massively helpful.

Code in the template:

$productImage = $block->getImage($_product, $image);

Code in the block:

use Magento\Catalog\Api\CategoryRepositoryInterface;
use Magento\Catalog\Model\Product;

class Category extends \Magento\Catalog\Block\Product\ListProduct
{
 public function __construct(
        \Magento\Catalog\Block\Product\Context $context,
        \Magento\Framework\Data\Helper\PostHelper $postDataHelper,
        \Magento\Catalog\Model\Layer\Resolver $layerResolver,
        CategoryRepositoryInterface $categoryRepository,
        \Magento\Framework\Url\Helper\Data $urlHelper,
        array $data = []
    ) {
        parent::__construct(
            $context, $postDataHelper, $layerResolver, $categoryRepository, $urlHelper, $data
        );
    }
}

From further digging it seems to be something to do with a resize function that is called from getImage. Could this be something to do with xml?

Best Answer

I found the same issue in Magento 2.1.0.

After debugging I found that

1) the placeholder images were broken/missing in

Store -> Configuration -> Catalog -> Product Image Placeholders

2) Imagick library wasn't installed.

Updated those two things the error Unable to resolve the source file got fixed.

Hope it helps.

Related Solutions

Magento – How to override core helper in magento 2

you can do it this way, but you have to extend the original helper, because all classes that use it, actually expect an instance of the original helper (or a derived class)

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 – How to override core helper in magento 2

Magento 2 – Create Custom Block Without Module

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