How do I get services (dependencies) in a custom class

Question

In the controller, I could do

$this->get('service.name') 

But in a custom class, how can I do that?

Answer 1

Define your custom class as a service, and then inject dependencies into it.

Ex:

// services.yml services:    my.custom.service.id:        class: My\Custom\Class        arguments:          - @service.name          - @doctrine.orm.entity_manager 

Your custom class' constructor would then get those services as arguments.

Be sure to read up on the Service Container in the official docs. It goes over all this in great detail.