How acces QueryBuilder in Service container [Symfony - SonataBundle]

Question

How do I use QueryBuilder in a service container?

For exemple :

services:
my.service:
    class: My\MyBundle\UserAdmin
    arguments: [ ~, My\MyBundle\Entity\User,~ ]

How can i access QueryBuilder for select only the Users loggeds (this is just a exemple) ? It is possible ?

Answer 1

Injet doctrine entity manager to the service definition :

 arguments: ["@doctrine.orm.entity_manager"]

In the constructor of the service :

public function __constructor(EntityManager $entityManager)
    {
        $this->em = $entityManager;
    }