Clever Geek Handbook

Is there a way to inject the EntityManager into the service

When used, Symfony 3.3

I declare a service like this:

class TheService implements ContainerAwareInterface
{
    use ContainerAwareTrait;
    ...
}

Inside every activity where I need an EntityManager, I get it from the container:

$em = $this->container->get('doctrine.orm.entity_manager');

This is a little annoying, so I'm curious if Symfony has anything that acts like EntityManagerAwareInterface

.

+3


source to share


2 answers


Traditionally, you would create a new service definition in your file services.yml

to set the entity manager as an argument to your constructor

app.the_service:
    class: AppBundle\Services\TheService
    arguments: ['@doctrine.orm.entity_manager']

Most recently, with the release of symfony 3.3, the default symfony-standard-edition changed its default file to services.yml

use autowire

and added all the classes in AppBundle

for maintenance. This removes the need to add a personalized service and using a type hint in your constructor will automatically inject the correct service.

Your class of service will look like this



use Doctrine\ORM\EntityManagerInterface

class TheService
{
    private $em;

    public function __construct(EntityManagerInterface $em)
    {
        $this->em = $em;
    }

    // ...
}

For more information on automatically detecting service dependencies, see https://symfony.com/doc/current/service_container/autowiring.html

A new default config file services.yml

is available here: https://github.com/symfony/symfony-standard/blob/3.3/app/config/services.yml

+6


source


Sometimes I inject EM into a service in a container like this in services.yml:

 application.the.service:
      class: path\to\te\Service
      arguments:
        entityManager: '@doctrine.orm.entity_manager'


And then in the service class, get it by the __construct method. Hope it helps.

+1


source






More articles:


All Articles