Magento 2 How can i create a custom factory class for a class?

Question

I want to initialize some data on factory->create() without passing in the create(["mydata" => 1]).

What's the way to create MyFactoryClass with custom create() for MyClass in my module?

I find not dev doc for the same or any article.

Answer 1

Let's say that your class for which you want the factory is this Vendor\Module\Model\MyClass.
now you can create the class Vendor\Module\Model\MyClassFactory in the same folder as your initial class.

namespace Vendor\Module\Model;

class MyClassFactory implements MyInterface
{
 .....
     public function create() 
     {
     ......
     }
}

class MyInterfaceFactory extends MyClassFactory
{
    // this class is added so that there no Type Error
    // while using MyInterfaceFactory/MyClassFactory
}

Creating this means that Magento will not autogenerate the factory class for your class anymore. It will use your factory instead.