Magento 2: Why catalog_product_save_after event is not listed?

Question

On manually saving products on the admin page, I have tested the catalog_product_save_after event and my observer can successfully catch the event. So this event exists in Magento 2, however I can not find this event in any cheat sheets like: https://cyrillschumacher.com/magento-2.1-list-of-all-dispatched-events/

On the other hand, I can find controller_action_catalog_product_save_entity_after in the list.

So here is my question: why catalog_product_save_after event is not listed? What is the difference between catalog_product_save_after and controller_action_catalog_product_save_entity_after?

Answer 1

Magento 2.1.7 CE:

1) controller_action_catalog_product_save_entity_after is trigger when saving product in Admin.

2) Most Model entities derive from \Magento\Framework\Model\AbstractModel. In this abstract class, we can find some events. For example:

/**
 * Processing object after save data
 *
 * @return $this
 */
public function afterSave()
{
    ......
    $this->_eventManager->dispatch($this->_eventPrefix . '_save_after', $this->_getEventData());
    ......
}

As we can see, some model events names will be trigger. The name of event will be added the prefix $this->_eventPrefixof model. We can define the event prefix in the model.

vendor/magento/module-catalog/Model/Product.php

/**
 * @var string
 */
protected $_eventPrefix = 'catalog_product';