Symfony2: How to access to service from repository - php

Question

I have class ModelsRepository:
class ModelsRepository extends EntityRepository
{}
And service
container_data:
class: ProjectName\MyBundle\Common\Container
arguments: [#service_container]
I want get access from ModelsRepository to service container_data. I can't transmit service from controller used constructor.
Do you know how to do it?

Answer 1

IMHO, this shouldn't be needed since you may easily break rules like SRP and Law of Demeter
But if you really need it, here's a way to do this:
First, we define a base "ContainerAwareRepository" class which has a call "setContainer"
services.yml
services:
# This is the base class for any repository which need to access container
acme_bundle.repository.container_aware:
class: AcmeBundle\Repository\ContainerAwareRepository
abstract: true
calls:
- [ setContainer, [ #service_container ] ]
The ContainerAwareRepository may looks like this
AcmeBundle\Repository\ContainerAwareRepository.php
abstract class ContainerAwareRepository extends EntityRepository
{
protected $container;
public function setContainer(ContainerInterface $container)
{
$this->container = $container;
}
}
Then, we can define our Model Repository.
We use here, the doctrine's getRepository method in order to construct our repository
services.yml
services:
acme_bundle.models.repository:
class: AcmeBundle\Repository\ModelsRepository
factory_service: doctrine.orm.entity_manager
factory_method: getRepository
arguments:
- "AcmeBundle:Models"
parent:
acme_bundle.repository.container_aware
And then, just define the class
AcmeBundle\Repository\ModelsRepository.php
class ModelsRepository extends ContainerAwareRepository
{
public function findFoo()
{
$this->container->get('fooservice');
}
}
In order to use the repository, you absolutely need to call it from the service first.
$container->get('acme_bundle.models.repository')->findFoo(); // No errors
$em->getRepository('AcmeBundle:Models')->findFoo(); // No errors
But if you directly do
$em->getRepository('AcmeBundle:Models')->findFoo(); // Fatal error, container is undefined

Answer 2

I tried some versions. Problem was solved follows
ModelRepository:
class ModelRepository extends EntityRepository
{
private $container;
function __construct($container, $em) {
$class = new ClassMetadata('ProjectName\MyBundle\Entity\ModelEntity');
$this->container = $container;
parent::__construct($em, $class);
}
}
security.yml:
providers:
default:
id: model_auth
services.yml
model_auth:
class: ProjectName\MyBundle\Repository\ModelRepository
argument
As a result I got repository with ability use container - as required.
But this realization can be used only in critical cases, because she has limitations for Repository.
Thx 4all.

Answer 3

You should never pass container to the repository, just as you should never let entities handle heavy logic. Repositories have only one purpose - retrieving data from the database. Nothing more (read: http://docs.doctrine-project.org/en/2.0.x/reference/working-with-objects.html).
If you need anything more complex than that, you should probably create a separate (container aware if you wish) service for that.

Answer 4

I would suggest using a factory service:
http://symfony.com/doc/current/components/dependency_injection/factories.html
//Repository
class ModelsRepositoryFactory
{
public static function getRepository($entityManager,$entityName,$fooservice)
{
$em = $entityManager;
$meta = $em->getClassMetadata($entityName);
$repository = new ModelsRepository($em, $meta, $fooservice);
return $repository;
}
}
//service
AcmeBundle.ModelsRepository:
class: Doctrine\ORM\EntityRepository
factory: [AcmeBundle\Repositories\ModelsRepositoryFactory,getRepository]
arguments:
- #doctrine.orm.entity_manager
- AcmeBundle\Entity\Models
- #fooservice

Answer 5

Are you sure that is a good idea to access service from repo?
Repositories are designed for custom SQL where, in case of doctrine, doctrine can help you with find(),findOne(),findBy(), [...] "magic" methods.
Take into account to inject your service where you use your repo and, if you need some parameters, pass it directly to repo's method.

Answer 6

I strongly agree that this should only be done when absolutely necessary. Though there is a quite simpler approach possible now (tested with Symfony 2.8).
Implement in your repository "ContainerAwareInterface"
Use the "ContainerAwareTrait"
adjust the services.yml
RepositoryClass:
namespace AcmeBundle\Repository;
use Doctrine\ORM\EntityRepository;
use Symfony\Component\DependencyInjection\ContainerAwareInterface;
use Symfony\Component\DependencyInjection\ContainerAwareTrait;
use AcmeBundle\Entity\User;
class UserRepository extends EntityRepository implements ContainerAwareInterface
{
use ContainerAwareTrait;
public function findUserBySomething($param)
{
$service = $this->container->get('my.other.service');
}
}
services.yml:
acme_bundle.repository.user:
lazy: true
class: AcmeBundle\Repository\UserRepository
factory: ['#doctrine.orm.entity_manager', getRepository]
arguments:
- "AcmeBundle:Entity/User"
calls:
- method: setContainer
arguments:
- '#service_container'

Answer 7

the easiest way is to inject the service into repository constructor.
class ModelsRepository extends EntityRepository
{
private $your_service;
public function __construct(ProjectName\MyBundle\Common\Container $service) {
$this->your_service = $service;
}
}

Answer 8

Extending Laurynas Mališauskas answer, to pass service to a constructor make your repository a service too and pass it with arguments:
models.repository:
class: ModelsRepository
arguments: ['#service_you_want_to_pass']