Magento – How in Block a productcollection of template render

magento2productsrenderer

How in Block

app/code/Name/Name/Block/Rewrite/TopMyMenu.php

a productcollection of template

"vendor/magento/module-catalog-widget/view/frontend/templates/product/widget/content/grid.phtml"

render?

$productCollection = $this->categoryFactory->create()->getCollection()
              ->addAttributeToSelect('*')
              ->addAttributeToFilter('is_active', 1)
              ->setOrder('position', 'ASC')
              ->addIdFilter($category->getChildren());

$html = $produCtcollection->toHtml(); ?????

Best Answer

toHtml() return block's html output

Process

\vendor\magento\framework\View\Element\AbstractBlock.php

    public function toHtml()
    {
/* dode */
            $this->_beforeToHtml();
            $html = $this->_toHtml();
            $this->_saveCache($html);
/* dode */
        return $html;
    }

Next this goes to \vendor\magento\framework\View\Element\Template.php

protected function _toHtml()
{
    if (!$this->getTemplate()) {
        return '';
    }
    return $this->fetchView($this->getTemplateFile());
}

Renders block html. and $this->fetchView function retrieves the block view from file (template).

Assume you know templates are using block functions and blocks extends core classes ( Template.php or AbstractBlock.php not in all cases ).

The data is populating by using toHtml()

Hope this helps.

Related Solutions

Magento 2 – How to Edit New Products Template

The file you are looking for it here:

vendor/magento/module-catalog-widget/view/frontend/templates/product/widget/content/grid.phtml

If you place some dummy text here, you will see if on your home page. So if you want to edit this file further, you can copy it over to your theme.

To answer your question, at this point I have not found a .phtml or .xml that controls the product grids, they are all controlled by the styles based on css breakpoints. If you take a look at this file vendor/magento/theme-frontend-blank/Magento_Catalog/web/css/source/module/_listings.less you will see this:

.media-width(@extremum, @break) when (@extremum = 'min') and (@break = @screen__m) {
    .page-products .products-grid .product-item { width: 100%/3 }
    .page-products.page-layout-1column .products-grid .product-item { width: 100%/4 }
    .page-products.page-layout-3columns .products-grid .product-item { width: 100%/2 }
}
.media-width(@extremum, @break) when (@extremum = 'min') and (@break = @screen__l) {
    .products-grid .product-item { width: 100%/5 }
    .page-layout-1column .products-grid .product-item { width: 100%/6 }
    .page-layout-3columns .products-grid .product-item { width: 100%/4 }
    .page-products .products-grid .product-items { margin: 0; }
    .page-products .products-grid .product-item {
        width: 23.233%;
        margin-left: calc(~"(100% - 4 * 23.233%) / 3");
        padding: 0;
        &:nth-child(4n+1) {
            margin-left: 0;
        }
    }
    .page-products.page-layout-1column .products-grid .product-item { width: 100%/5 }
    .page-products.page-layout-3columns .products-grid .product-item { width: 100%/4 }
}

which defines the breakpoints at when the grid will shift from 5 to 4 to 3. When I have had to change this around, I just do it in the styles, based on what I need, just change the math around to work with the design.

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 Edit New Products Template

Magento 2 – Create Custom Block Without Module

Related Topic