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When to use after method in Magento 2?
After methods are executed after the original method is called. Next to a class object the method accepts one more argument and that’s the result that also must return. Method that’s being extended has to have the same name with prefix “after”.
When to use virtual types in Magento 2?
Virtual types come in handy when only construct arguments of dependencies have to be changed without creating any additional files and by just configuring it in xml files. There’s more than one way of overriding classes and methods and choosing which one to use will depend on a situation you run into.
How does Dependency Injection work in Magento 2?
Compared to its previous version, Magento 2 came out with a new concept of dependency injection where classes inject dependencies (different objects) for an object instead of that object manually creating them internally.
How can I override a class in Magento?
To override Magento\\Catalog\\Model\\Product class all we need is to define our preference and to create a file that will extend the original class: To make sure we have the right order of module dependencies, etc/module.xml should have defined module sequence for Magento_Catalog in our example.
How to create a static block in Magento?
For example i created a static block with identifier promo. In magento 1 we include a static block using below code This is equivalent to M1. Try below code. Hope this helps you!
When to use staticmethod within the class body?
When I attempt to use a static method from within the body of the class, and define the static method using the built-in staticmethod function as a decorator, like this:
How does class preferences work in Magento for PHP?
Class preferences are the system where Magento developers (core or third party) define concrete classes that the object manager can use to instantiate interfaces. i.e. They link a default class to a PHP interface, and then when a programmer asks the object manager to instantiate that interface, Magento returns an object of the linked class.
When to use abstraction-implementation mapping in Magento?
There’s an abstraction-implementation mapping implemented when the constructor signature of a class requests an object by its interface. That means that interfaces should be used, where available, and the mapping will tell which class should be initiated.