Get product from save event observer - Magento 2

Question

Following a product save event I am trying to access the product within Magento 2.

I have configured the listener on:

controller_action_catalog_product_save_entity_after

the xml looks as follows:

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Event/etc/events.xsd">
    <event name="controller_action_catalog_product_save_entity_after">
        <observer name="wire_products_update" instance="TBS\WireProductsHook\Observer\WireProductsUpdate" />
    </event>
</config>

When a product saved observers class is called. But how to access the saved product information. The observer class is as follows:

<?php
/**
* Copyright © 2015 Magento. All rights reserved.
* See COPYING.txt for license details.
*/
namespace TBS\WireProductsHook\Observer;

use Magento\Framework\Event\ObserverInterface;

class WireProductsUpdate implements ObserverInterface {

    public function execute( \Magento\Framework\Event\Observer $observer ) {

        // echos name of event: controller_action_catalog_product_save_entity_after
        echo 'name of event: ' . $observer->getEvent()->getName();

        // tried using the same method as the save class: <magento>/module-catalog/Controller/Adminhtml/Product/Save.php on line 76
        $controller = $observer->getData('controller');

        // Fails: Fatal error: Cannot access protected property ...
        $product = $controller->initializationHelper->initialize($controller->productBuilder->build($controller->getRequest()));

    }

}

Within /module-catalog/Controller/Adminhtml/Product/Save.php the event is fired on line 114:

$this->_eventManager->dispatch(
    'controller_action_catalog_product_save_entity_after',
    ['controller' => $this]
);

Controller pass as an argument. However, I am unsure how to to use this to access the product.

I would like to get the products SKU

Answer 1

If you want to $productobj after saving product from backend then you can easily use catalog_product_save_after event.

I am assuming that you already know how to create a module in M2.

Put this events.xml in below path

app\code\YOUR_NAMESPACE\YOURMODULE\etc\adminhtml

<?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="test_name" instance="YOUR_NAMESPACE\YOUR_MODULENAME\Observer\Productsaveafter" />
    </event>
</config>

And put your Productsaveafter.php in below path

app\code\YOUR_NAMESPACE\YOURMODULE\Observer\

<?php

namespace YOURNAMESPACE\YOURMODULENAME\Observer;

use Magento\Framework\Event\ObserverInterface;

class Productsaveafter implements ObserverInterface
{    
    public function execute(\Magento\Framework\Event\Observer $observer)
    {
        $_product = $observer->getProduct();  // you will get product object
        $_sku=$_product->getSku(); // for sku

    }   
}

Answer 2

This is quite old. I m not sure if anyone cares now. But I was looking for this so:

I m not sure since when but definitely on M2.2.x that event is like this now:

$this->_eventManager->dispatch(
                    'controller_action_catalog_product_save_entity_after',
                    ['controller' => $this, 'product' => $product]
                );

This means it is giving you now the product too.

For your case you should have done this and you could get the product attributes as an array:

$post = $observer->getController();
        $data = $post->getRequest()->getPost();
        $productAsArray = $data['product'];