Magento 2 Development Quick Start Guide

Factories

Factories are classes that create other classes—much like the object manager, except this time we are encouraged to use them directly. Their purpose is to instantiate the non-injectable classes—those that we should not inject directly into __construct. The beauty of using factories is that, most of the time, we don't even have to write them, as they are automatically generated by Magento unless we need to implement some sort of specific behavior for our factory classes.

By doing a lookup for the Factory $ string across the entire <MAGENTO_DIR> directory's *.php files, we can see thousands of factory examples, spread across the majority of Magento's modules.

While a great deal of these factories actually exist, others are automatically ...