Magento2 reuse add to cart form template - forms

Question

Is it possible to reuse somehow magentos 2 add to cart form in a custom module? I have in tab all child products of current product and I want to allow customers to add to cart products so thats how looks my code at this status
<?php
if ($currentProduct = $block->getCurrentProduct()) {
$variants = $block->getVariants($currentProduct);
if($variants) { ?>
<ul id="product-variants">
<?php foreach ($variants as $_product) : ?>
<li>
<form>
<?php echo $_product->getName(); ?>
SKU: <?php echo $_product->getSku(); ?>
Brutto: <?php echo $_product->getPrice(); ?>
<input type="text" placeholder="Stück">
<button>Add to cart</button>
</form>
</li>
<?php endforeach; ?>
</ul>
<?php };
}
?>

Answer 1

you can add button in custom phtml file as follow, I have done this in custom module
In your block file
use Magento\Catalog\Block\Product\ListProduct;
<?php
public function __construct(
\Magento\Backend\Block\Template\Context $context,
\Magento\Catalog\Model\ResourceModel\Product\CollectionFactory $productCollectionFactory,
\Magento\Catalog\Block\Product\ListProduct $listProductBlock,
array $data = []
) {
parent::__construct($context, $data);
$this->_productCollectionFactory = $productCollectionFactory;
$this->listProductBlock = $listProductBlock;
}
public function getProductCollection()
{
/** #var $collection \Magento\Catalog\Model\ResourceModel\Product\Collection */
$collection = $this->_productCollectionFactory->create()->addAttributeToSelect('*')->load();
return $collection;
}
public function getAddToCartPostParams($product)
{
return $this->listProductBlock->getAddToCartPostParams($product);
}
?>
get productlist in view file
<?php
const PARAM_NAME_BASE64_URL = 'r64';
const PARAM_NAME_URL_ENCODED = 'uenc';
use Magento\Framework\App\Action\Action;
$_productCollection = $block->getProductCollection();
?>
<?php foreach ($_productCollection as $_product): ?>
<?php $postParams = $block->getAddToCartPostParams($_product); ?>
<?php echo $_product->getName()?>
<form data-role="tocart-form" action="<?php /* #escapeNotVerified */ echo $postParams['action']; ?>" method="post">
<input type="hidden" name="product" value="<?php /* #escapeNotVerified */ echo $postParams['data']['product']; ?>">
<input type="hidden" name="<?php /* #escapeNotVerified */ echo Action::PARAM_NAME_URL_ENCODED; ?>" value="<?php /* #escapeNotVerified */ echo $postParams['data'][Action::PARAM_NAME_URL_ENCODED]; ?>">
<?php echo $block->getBlockHtml('formkey')?>
<?php $storeManager = \Magento\Framework\App\ObjectManager::getInstance()->get('Magento\Store\Model\StoreManagerInterface'); ?>
<button type="submit"
title="<?php echo $block->escapeHtml(__('Add to Cart')); ?>"
class="action tocart primary">
<span><?php /* #escapeNotVerified */ echo __('Add to Cart') ?></span>
</button>
</form>
<?php endforeach;?>