Magento2 – Difference Between Factory vs ObjectManager While Instantiating Object

factorymagento2

I have some confusion while use Factory pattern vs new instance object.

What difference between them?

$object = objectManager->create() vs objectManager->create('ObjectFactory')

what benefits in cases when create object by Factory.

This thread may be large but I need core team members to help me clearly minds

Best Answer

You should not use $objectManager directly because it takes control from clients of your code and leads to higher code coupling

We split all objects to two groups: injectables & non-injectables.

Injectables - all services, mostly stateless classes like FrontController or EventManager should be requested in object constructors.

Non-Injectables - all entities, mostly stateful objects like Product or Category should be created through Factories. And Factories should be requested in constructors.

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Magento 2 – Passing Variables from Controller Action to View

Regarding #1, the registry does still exist, very similar to what you know from Magento 1. It's just moved. See: \Magento\Framework\Registry

Add it to your constructor via dependency injection, and then you can use your familiar $registry->register($key, $value) and $registry->registry($key) methods to store/access data.

I'd recommend poking around the \Magento\Framework namespace if you haven't already. A lot of what was accessible from Mage or App before is still there, just split out.

As far as best practices, I can't answer that, but I expect the answer would be to keep as much logic out of the controller as possible. Looking at the core is probably your best bet. For instance, see the customer address edit page: Basic controller; extensive block--including pulling the address ID and loading, if necessary. They handle that directly in the block; they don't do it in the controller and then pass it around.

Magento – Magento 2 – Inject arguments into constructors of fabricated objects

Something like this maybe ?

$this->flagFactory->create(['data' => ['flag_code' => 'something']]);

How can data parameters be passed to a factory create( ) in Magento 2?

Best Answer

Related Solutions

Magento 2 – Passing Variables from Controller Action to View

Magento – Magento 2 – Inject arguments into constructors of fabricated objects

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