Magento 2 add products to cart by using code?

Question

I tried to add the products to cart by using code. I tried with below code

class Producttocart extends \Magento\Framework\App\Action\Action {
 protected $formKey;
 protected $cart;
 protected $product;
 protected $pageFactory;
 public function __construct(
 \Magento\Framework\App\Action\Context $context, \Magento\Framework\Data\Form\FormKey $formKey, \Magento\Checkout\Model\Cart $cart, \Magento\Framework\View\Result\PageFactory $pageFactory, \Magento\Catalog\Model\Product $product, array $data = []
 ) {
 $this->formKey = $formKey;
 $this->cart = $cart;
 $this->product = $product;
 $this->pageFactory = $pageFactory;
 parent::__construct($context);
 }
 public function execute()
{
$minQty = 3;
 $cart_product = $this->getRequest()->getParams();
//echo "<pre>";print_r($cart_product);die("here");
foreach ($cart_product as $selecttid => $optionid) {
 if (strpos($selecttid, 'options') !== false) {
 $productoptions[$selecttid] = $optionid;
 }
 }
//echo "<pre>";print_r($productoptions);die("here");
 //$cart_product = $this->_productFactory->getCollection()->addAttributeToFilter('entity_id',array('product_id1','product_id2'));
 if ($cart_product) {
 foreach ($cart_product as $key => $value) {
 if($value > 0){
 $product = $this->_productFactory->create()->load($key);
 $customOptions = $this->_objectManager->create('Magento\Catalog\Model\Product\OptionFactory')->create()->getProductOptionCollection($product);
 $qty = $this->stockItem->getStockQty($product->getId(), $product->getStore()->getWebsiteId());

// echo $qty;die("here"); if ($value < $minQty) $value = $minQty; if ($value> $qty) { $this->messageManager->addError(__('The requested quantity for "%s" is not available.' . $product->getName())); }else{ if($customOptions){ $matches = array(); foreach ($productoptions as $selecttid => $optionid) { if (strpos($selecttid, $product->getId() . 'options') !== false && is_numeric($optionid) && stripos($selecttid, $product->getId() . 'options')==0) { $selecttid1 = str_replace($product->getId() . 'options', "", $selecttid); $matches[$selecttid1] = $optionid;

 }
 }
 //echo "<pre>";print_r($matches);die("here");
 $this->addCartProductwithOptions($product->getId(), $value, $matches);
 }else{
 $this->addCartProduct($key, $value);
 }
 }
 }
 }
 $this->_cart->save();
 }
 $this->_redirect("checkout/cart/add/form_key/");
}
public function addCartProduct($productID, $productQty)
{
 $product = $this->_productFactory->create()->load($productID);
 $info = new \Magento\Framework\DataObject(
 [
 'form_key' => $this->formKey->getFormKey(),
 'product_id' => $productID,
 'qty' => $productQty
 ]
 );
 return $this->_cart->addProduct($product, $info);
}
public function addCartProductwithOptions($productID, $productQty, $options)
{
//echo "<pre>";print_r($options);die("here");
 $product = $this->_productFactory->create()->load($productID);
 $info = new \Magento\Framework\DataObject(
 [
 'form_key' => $this->formKey->getFormKey(),
 'product_id' => $productID,
 'qty' => $productQty,
 'options' => $options
 ]
 );
 return $this->_cart->addProduct($product, $info);
}

In this $params value is array like

Array
(
 [form_key] => D6a4V5hbr9XO26zk
 [1] => 1 //here [productid] => qty
 [2] => 1 //here [productid] => qty
 [Add_to_Cart] => Add to Cart
)

Here $productoptions value is like this Array ( [1_options_3] => 3 [2_options_4] => None ) $matches value is like this Array ( [3] => 3 ) product is added to cart but its qty is double is after added to cart is double like below screnshot http://prntscr.com/lty4h9

when qty>0 and is_numeric($productId) product need to add to cart but above code is only one product is added to cart. how can i solve this issue?

Answer 1

You need to change your addProduct() function's param. Follow my below answer and add in your controller :

class Producttocart extends \Magento\Framework\App\Action\Action {
 protected $formKey;
 protected $_productFactory;
 protected $_cart;
 protected $messageManager;
 public function __construct(
 Context $context,
 \Magento\Framework\Data\Form\FormKey $formKey,
 \Magento\Framework\Message\ManagerInterface $managerInterface,
 \Magento\Catalog\Model\ProductFactory $productFactory,
 \Magento\Checkout\Model\Cart $cart
 ) {
 parent::__construct($context);
 $this->formKey = $formKey;
 $this->_productFactory = $productFactory;
 $this->_cart = $cart;
 $this->messageManager = $managerInterface;
 }
 public function execute()
 {
 //$cart_product = your product data collection or 
 //$cart_product = $this->_productFactory->getCollection()->addAttributeToFilter('entity_id',array('product_id1','product_id2'));
 if ($cart_product) {
 foreach ($cart_product as $key => $value) {
 if($value['qty'] > 0){
 $custom_option_value = '';
 if (isset($value['super_attribute']) || !empty($value['super_attribute'])) {
 $custom_option_value = $value['super_attribute'];
 }
 $this->addCartProduct($value['id'], $value['qty'],$custom_option_value);
 }
 }
 $this->_cart->save();
 }
 $this->_redirect("checkout/cart/add/form_key/");
 }
 public function addCartProduct($productID, $productQty,$custom_option_val)
 {
 $product = $this->_productFactory->create()->load($productID);
 $info = new \Magento\Framework\DataObject(
 [
 'form_key' => $this->formKey->getFormKey(),
 'product_id' => $productID,
 'qty' => $productQty,
 'super_attribute' => $custom_option_val
 ]
 );
 return $this->_cart->addProduct($product, $info);
 }
}

• Radha Krishna: Thanks for u r reply, how can i add the custom options for this code?
• Rohan Hapani: please check my updated answer.
• Radha Krishna: i think, u r wrote code for configurable product but i need the simple products custom options code
• Rohan Hapani: No. It's for simple product.
• Rohan Hapani: You can see here also : magento.stackexchange.com/a/244946/51810

Answer 2

<?php
namespace Demo\Addtocart\Controller\Index;
use Magento\Framework\App\Action\Context;
class Customaddtocart extends \Magento\Framework\App\Action\Action
{
 protected $checkoutSession;
 protected $_productloader;
 protected $cartRepository;
 public function __construct(Context $context,
 \Magento\Catalog\Model\ProductFactory $_productloader,
 \Magento\Checkout\Model\Session $checkoutSession,
 \Magento\Quote\Api\CartRepositoryInterface $cartRepository,
 array $data = [])
 {
 $this->checkoutSession = $checkoutSession;
 $this->cartRepository = $cartRepository;
 $this->_productloader = $_productloader;
 parent::__construct($context);
 }
 public function execute()
 {
 $post = $this->getRequest()->getPost();
 $addtocartid = $post['addtocartid'];
 $qty = $post['qty'];
 $addtocartid=explode(",", $addtocartid);
 $qty=explode(",", $qty);
 $quote = $this->checkoutSession->getQuote();
 for($j = 0; $j < count($addtocartid); $j++)
 {
 $_product = $this->_productloader->create()->load($addtocartid[$j]);
 $quote->addProduct($_product, (int)$qty[$j]);
 }
 $this->cartRepository->save($quote);
 $this->checkoutSession->replaceQuote($quote)->unsLastRealOrderId();
 }
}