Question

I read this: http://symfony.com/doc/current/book/service_container.html

It said:

$mailer = $this->get('my_mailer');

As an added bonus, the Mailer service is only created once and the
same instance is returned each time you ask for the service. This is
almost always the behavior you’ll need (it’s more flexible and
powerful), but we’ll learn later how you can configure a service that
has multiple instances.

How do I make my service to have multiple instances — i.e. whenever I reach the service I am given a new instance? Something like $this->getNew() or something?

Answer 1

You are talking about the scope of a service. You can look them up here. In short, define your service as scope prototype instead of the default container and the dependency injection container will take care to create a new object every time you request it:

services:
    my_service:
        class: Someclass
        scope: prototype

Note: since Symfony2.8, scope: prototype has been replaced by shared: false.

# Symfony >= 2.8
services:
    my_service:
        class: Someclass
        shared: false