Hello Devs, In this tutorial we will see how to get a list of all observers of specific events in Magento 2 programmatically.
Suppose you are debugging some code and you get a requirement to find all observers which are triggered when a specific event occurs.
Suppose that, you want to find the list of observers of the “sales_order_place_after” event.
In this situation, you can simply get all the observer lists using the below snippet code.
In Magento 2, You can get observers by event name using “Magento\Framework\Event\Config” class.
We can use getObservers() method to fetch an array of all the observers by passing the event name.
Here is the example code you can use :
<?php
class YourClass {
public function __construct(
\Magento\Framework\Event\Config $eventConfig
) {
$this->eventConfig = $eventConfig;
}
public function getObservers(string $eventName = null)
{
/* here you will get array of all observers containing observer name,instance with name as key for each observer for the specified event */
$observersData = $this->eventConfig->getObservers($eventName);
/*as we want only observer names here, we can use below code*/
$observers = [];
foreach ($observersData as $observerName => $config) {
$observers[] = $observerName;
}
return $observers;
}
}Then you can call this function by passing the event name in an argument like below.
$this->getObservers('sales_order_place_after');
If you print the data, It will return the array list of all observers in the below format.
[
"sales_vat_request_params_order_comment",
"magento_giftregistry",
"login_as_customer_log_place_order",
"newrelicreporting_observer_report_sales_order_place",
"newrelicreporting_newrelic_report_sales_order_place",
"ddg_sales_order_place_after",
"stripe_payments_place_order_after",
]You will also love reading this :
That’s it for this tutorial. Thank you for reading. Happy coding !!
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