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How to use events and observers in Magento 2

I want to track the Magento shop data by hooks the Magento events. I’m new in Magento2 so I don’t know to hook the events and where to call an observer. I want to know how to call events which directory can we called. what hierarchy can be used? How to know the name of events?

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2

Answers


  1. 0

    Very basic information about the events and observers you can find in the manual, check here: https://devdocs.magento.com/guides/v2.3/extension-dev-guide/events-and-observers.html

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  2. 0

    Create a event file: events.xml

    File: app/code/Vendor_Name/Module_Name/etc/frontend/events.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_add_product_complete">
        <observer name="observername" instance="Vendor_NameModule_NameObserverObserverClass" />
    </event>
</config>

    Create Observer class

    File: app/code/Vendor_Name/Module_Name/Observer/ObserverClass.php

    <?php

namespace Vendor_NameModule_NameObserver;

class ObserverClass implements MagentoFrameworkEventObserverInterface
{
    public function execute(MagentoFrameworkEventObserver $observer)
    {
        //Your code to run when event is fired.
        return 'Event fired';
    }
}

    In above example, whenever event “checkout_cart_add_product_complete” is fired, the code inside Observer class will be executed.

    To get a list of events available in Magento 2, you can visit : Link

    Thanks, I hope this will help you. If you have any doubt or problem, feel free to ask in comment.

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