How are dependencies used in the Magento framework?
A module belonging to the Magento Framework can be used in the application layer by an explicit dependency. In this case, using interfaces is preferable to using classes. You can build dependencies between classes in the Magento Framework even if they belong to different modules.
What makes a module a module in Magento?
These modules: Contain code that directly uses logic from another module, such as class constants, static methods, public class properties, interfaces, and traits. Contain strings that include class names, method names, class constants, class properties, interfaces, and traits from another module.
How are layout files loaded in Magento 1?
The handles that fire control which layout files are loaded (in Magento 1 they controlled which XML nodes were read from all the files), and then Magento processes the combined XML tree to know which blocks it should add to a page. Put another way, in Magento 1 you would
Do you have to declare dependencies on other modules?
Module dependencies on other modules must be declared explicitly. You must also declare any dependency upon other components (for example, a theme, language package, or library). Removing or disabling a module does not result in disabling other modules. There are two types of Magento module dependencies: hard and soft.
How to manage the dependencies of a module?
At a high level, there are three main steps for managing module dependencies: Name and declare the module in the module.xml file. Declare any dependencies that the module has (whether on other modules or on a different component) in the module’s composer.json file.
What does the objectmanager do in Magento 2?
The ObjectManager is a Magento service class that instantiates objects at the beginning of the bootstrapping process. Magento uses class constructor signatures to retrieve information about an object’s constructor dependencies.