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How to create events and observer in Magento 2?
Magento use area definition to manage the store. We will have a frontend area and admin area. With the configuration file, they can be put in 3 places: Under etc/ folder is the configuration which can be used in both admin and frontend. Under etc/frontend folder will be used for frontend area. Under etc/adminhtml folder will be used for admin area.
We will use the simple module Hello World which was created in previous topic to create a menu. In Magento 2, we use the menu.xml to add this menu. Let create it: Create admin menu file called: menu.xml file with the following content:
Where to find events.xml file in Magento?
With this events.xml file, Magento will execute class Mageplaza\\HelloWorld\\Observer\\ChangeDisplayText whenever the dispatch method of this event was called on frontend area. Please note that, we place events.xml in the frontend area, so if you dispatch that event in the admin area (like admin controller), it will not run.
How to display the Admin Uri in Magento?
is a subdirectory of your web server docroot. In addition to the command arguments discussed here, see Common arguments. Before you run this command, you must Create or update the deployment configuration. This section discusses how to use the command line to display the Admin Uniform Resource Identifier ( URI ).
Can you run custom codes in Magento 2?
Working with Magento 2 observers is one of many different ways of extending the core functionality of a Magento 2 powered eCommerce store. Thanks to Observers, you can run your custom codes in response to a specific Magento event or even with a custom event.
How are events dispatched and watched in Magento?
Events are dispatched by modules when certain actions are triggered. In addition to its own events, Magento allows you to create your own events that can be dispatched in your code. When an event is dispatched, it can pass data to any observers configured to watch that event.
Can you have two observers with the same name?
Observer names must be unique per event definition. This means that you cannot have two observers with the same name in the same event definition. In the example, both observers have the name myObserverName. This is acceptable because each of those observers belong to different event definitions.