How in Block a productcollection of template render?

Question

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(); ?????

Andrej Wasemiller · Answer

maybe I asked wrong...
This solution I was looking for:

...
getBlockProductsHtml($productCollection);
...

public function getBlockProductsHtml($collection) {
   $html = '';
   $html = $this->_layout
        ->createBlock('MagentoCatalogWidgetBlockProductProductsList')
        ->setTemplate('Namespace_Module::html/products-grid.phtml')
        ->setData('product_collection', $collection)
        ->toHtml();
    return $html;
 }

or

->setTemplate('Magento_CatalogWidget::product/widget/content/grid.phtml')

thanks to all

Krishna ijjada · Answer

toHtml() return block's html output

Process

vendormagentoframeworkViewElementAbstractBlock.php

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

Next this goes to 
vendormagentoframeworkViewElementTemplate.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.

How in Block a productcollection of template render?

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