Symfony2 Use Doctrine in Service Container

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According to your code, you already have an EntityManager injected. You don’t need to call $em = $this->get('doctrine')->getEntityManager() — just use $this->em.

If you don’t inject an EntityManager already, read this.

UPDATE:

You need to make the container inject an EntityManager into your service. Here’s an example of doing it in config.yml:

services:
    your.service:
        class: YourVendor\YourBundle\Service\YourService
        arguments: [ @doctrine.orm.entity_manager ]

I prefer to define bundles’ services in their own services.yml files, but that’s a bit more advanced, so using config.yml is good enough to get started.

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