Magento2 : How to add Observer for catch when new order placed

Question

I wanted to save the orders from magento2 to my local Database.

I am planning to Create a module and add Observer to catch once a order is placed.

I don't know much about the Events & observer, just gone through this link

Please help me is there any Event already given by Magento2 after new Order. if there is no default event for Order placement Where do I have to write a event for new order.

Thanks in Advance.

Edit:

app\code\Autosynch\Sale\registration.php

<?php /**
* Copyright © 2016 Magento. All rights reserved. * See COPYING.txt for license details.
*/
\Magento\Framework\Component\ComponentRegistrar::register( \Magento\Framework\Component\ComponentRegistrar::MODULE, 'Autosynch_sale',
__DIR__
);

app\cpde\Autosynch\Sale\Observer\OrderPlaceAfter.php

<?php

namespace Autosynch\Sale\Observer;

use Magento\Framework\Event\ObserverInterface;
use Magento\Framework\Event\Observer;
use \Psr\Log\LoggerInterface;


class OrderPlaceAfter implements ObserverInterface
{
    public function execute(Observer $observer, LoggerInterface $logger)
    {
        $order = $observer->getEvent()->getOrder();

        $logger->info($order->getData());
        $logger->debug($order->getData());

        var_dump($order->getData());
        exit;
    }
}

app\code\Autosynch\Sale\etc\module.xml

<?xml version="1.0"?>
<!--
/**
* Copyright © 2016 Magento. All rights reserved. * See COPYING.txt for license details.
*/
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:Module/etc/module.xsd">
    <module name="Autosynch_Sale" setup_version="0.0.1">
    </module>
</config>

app\code\Autosynch\Sale\etc\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_submit_all_after">
        <observer name="modulename_sales_order_place_after" instance="Autosynch\Sale\Observer\OrderPlaceAfter" />
    </event>
</config>

Please help me where I am missing.

Answer 1

Create a file Autosynch/Sale/etc/events.xml and put below code,

<?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_submit_all_after">
        <observer name="autosynch_sales_order_place_after" instance="Autosynch\Sale\Observer\OrderPlaceAfter" />
    </event>
</config>

And then create Observer class OrderPlaceAfter.php in Autosynch/Sale/Observer.

    <?php
    namespace Autosynch\Sale\Observer;
    
    use Magento\Framework\Event\ObserverInterface;
    use Magento\Framework\Event\Observer;
    
    class OrderPlaceAfter implements ObserverInterface
    {
        /**
         * @var \Psr\Log\LoggerInterface 
         */
        protected $_logger;
        
        /**
         * @param \Psr\Log\LoggerInterface $_logger
         */
        public function __construct(
            \Psr\Log\LoggerInterface $_logger
        ){
            $this->_logger = $_logger;
        }
        
        
        public function execute(Observer $observer)
        {
            $order = $observer->getEvent()->getOrder();
    
            $this->_logger->info($order->getData());
            $this->_logger->debug($order->getData());
    
            //var_dump($order->getData());
            //exit;
        }
    }

Hope this help You.

Answer 2

I assume you know how to create observer. You can catch event sales_order_place_after for your task.

Reference