Question

In Symfony2, how can I go about adding Doctrine’s entity manager to a custom class or service?

I have tried $em = $this->get("doctrine.orm.entity_manager");
and $em = $this->getDoctrine()->getEntityManager();

Both failed, which led me to try and extend the Controller class with my custom class/service, and that died in a giant ball of fire.

Answer 1

You need to inject the entity manager service into your custom service. Your service definition should look like this:

my.service.name:
  class:     my\class
  arguments: [ @doctrine.orm.default_entity_manager ]

Make sure that your service’s __construct method takes the entity manager as an argument.

See the Service Container chapter for more info.

BTW, $this->getDoctrine() is a shortcut method that will only work in a class that extends Symfony\Bundle\FrameworkBundle\Controller\Controller