Mrthdrb

I am using following observer in event.xml

 <?xml version="1.0"?>
 <config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
 xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
 <event name="checkout_cart_save_after">
 <observer name="vendor_module_checkout_cart_save_after" instance="VendorModuleObserverCheckoutCartSaveAfterObserver" />
 </event>
 </config>

and here is my observer:

public function execute(EventObserver $observer)

 $product = $observer->getEvent()->getProduct();
 echo "proname: ".$product->getName();die;

but I am recieving following error:

Uncaught Error: Call to a member function getName() on null

Can anybody tell me how to get current product information using above observer?

1.oneway:

public function execute(MagentoFrameworkEventObserver $observer)
 
 //Product get product name
 $observer->getProduct()->getName();
 

2.Registry:

$this->product = $this->registry->registry('product');
$this->product->getName();

You can use GetQuoteItem ojbect from observer and check as below,

public function execute(EventObserver $observer)
 
 $product = $observer->getQuoteItem();
 echo "product Id: ".$product->getId();die;
 

First you this event is only object of MagentoCheckoutModelCart as a paramter

$this->_eventManager->dispatch('checkout_cart_save_after', ['cart' =>
$this]);

So, you can only call of this class public functions getItems().

In class this, has a function which give you current cart all object.So using this function get all items details.

 public function execute(EventObserver $observer)
 
 $cart = $observer->getCart();
 $allitems = $cart->getItems();
 /* get allitems */
 $lastItem =[];
 if(!empty($allitems))

 foreach ($allitems as $item) 

 / * add this */
 if ($item->getParentItemId()) 
 continue;
 
 $lastItem[$item->getId()] = $item; 
 
 // last add item 
 $lastestItem = max($lastItem);
 $lastestItem->getProduct()->getName(); 
 $lastestItem->getProduct()->getPrice(); 
 

 

Try to use this code :

$product = $observer->getEvent()->getData('product');
$productId = $product->getId();

The best way to know which data you can to use is go to the place where the event is dispatched. So just search by name of event (in your way checkout_cart_save_after). After that you rich this method in Cart Model:

 /**
 * Save cart
 *
 * @return $this
 */
public function save()

 $this->_eventManager->dispatch('checkout_cart_save_before', ['cart' => $this]);

 $this->getQuote()->getBillingAddress();
 $this->getQuote()->getShippingAddress()->setCollectShippingRates(true);
 $this->getQuote()->collectTotals();
 $this->quoteRepository->save($this->getQuote());
 $this->_checkoutSession->setQuoteId($this->getQuote()->getId());
 /**
 * Cart save usually called after changes with cart items.
 */
 $this->_eventManager->dispatch('checkout_cart_save_after', ['cart' => $this]);
 $this->reinitializeState();
 return $this;

As you can see you have data item "cart" that contains this model object. So get it in your observer:

public function execute(Observer $observer)

 /** @var MagentoCheckoutModelCart $cart */
 $cart = $observer->getData('cart');

After that you will have the cart model and it allows to use any methods of this model. In your way you need products in the cart. For get it use the method $productIds = $cart->getQuoteProductIds(). Then if you need to load Product data you should load the product models by Products IDs through ProductRepository. Add to you __construct dependency injection:

 /**
 * @var MagentoCatalogApiProductRepositoryInterface
 */
protected $productRepository;

/**
 * CheckoutCartSaveAfter constructor.
 *
 * @param MagentoCatalogApiProductRepositoryInterface $productRepository
 */
public function __construct(ProductRepositoryInterface $productRepository)

 $this->productRepository = $productRepository;

For sure don't forgot to use this commands after that:

php bin/magento setup:upgrade && php bin/magento setup:di:compile

Then loads product models and get a product name or whatever you want.

 /** @var MagentoCatalogModelProduct[] $products */
 $products = [];
 foreach ($productIds as $productId) 
 $products[$productId] = $this->productRepository->getById($productId);
 

 foreach ($products as $product) 
 var_dump($product->getName());
 

Full example of observer is below:

<?php

namespace VendorModuleObserver;

use MagentoCatalogApiProductRepositoryInterface;
use MagentoFrameworkEventObserver;
use MagentoFrameworkEventObserverInterface;

class CheckoutCartSaveAfter implements ObserverInterface

/**
 * @var MagentoCatalogApiProductRepositoryInterface
 */
protected $productRepository;

/**
 * CheckoutCartSaveAfter constructor.
 *
 * @param MagentoCatalogApiProductRepositoryInterface $productRepository
 */
public function __construct(ProductRepositoryInterface $productRepository)

 $this->productRepository = $productRepository;


/**
 * @inheritdoc
 */
public function execute(Observer $observer)

 /** @var MagentoCheckoutModelCart $cart */
 $cart = $observer->getData('cart');

 $productIds = $cart->getQuoteProductIds();

 /** @var MagentoCatalogModelProduct[] $products */
 $products = [];
 foreach ($productIds as $productId) 
 $products[$productId] = $this->productRepository->getById($productId);
 

 foreach ($products as $product) 
 var_dump($product->getName());
 

You need create file inside appcodeVendorMyPackageObserverProductSaveafter.php

<?php
namespace VendoMyPackageObserver;
 use MagentoFrameworkEventObserverInterface;
 use MagentoFrameworkEventObserver as EventObserver;

 class ProductSaveAfter implements ObserverInterface
 {

 public function execute(MagentoFrameworkEventObserver $observer)
 
 /** @var MagentoCatalogModelProduct $product */
 $product = $observer->getEvent()->getProduct();
 $productID=$product->getId(); 
 var_dump($productID);
 die();
 

Next another file appcodeVendorMyPackageetcadminhtmlevents.xml

<?xml version="1.0"?>
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
 <event name="catalog_product_save_after">
 <observer name="save_example_data" instance="VendorMyPackageObserverProductSaveAfter" />
 </event>
</config>