Inject Container in Entity Repository - symfony

Question

I want to get Current locale in my Repository.That's why I am injecting the Container into my Repository but I am getting error that I am unable to figure it out.
This is my service.yml code
survey.repository.container_aware:
class: Demo\SurveyBundle\Repository\SurveyRepository
calls:
- [ setContainer, [ #service_container ] ]
and this is my repository class code
.......
use Symfony\Component\DependencyInjection\ContainerInterface as Container;
.......
protected $container;
public function __construct(Container $container) {
$this->container = $container;
}
After that I am getting below error
ContextErrorException: Catchable Fatal Error: Argument 1 passed to
Demo\SurveyBundle\Entity\SurveyRepository::__construct() must implement
interface Symfony\Component\DependencyInjection\ContainerInterface, instance of
Doctrine\ORM\EntityManager given
What I am missing in my construct or in service?

Answer 1

You are passing the container with the Setter Injection (in the yml) but you define it in the constructor class.
BTW the entity manager already have a constructor class with arguments so don't take the Constructor Injection and simply change your method in the class as:
public function setContainer(Container $container) {
$this->container = $container;
}

Answer 2

You actually have another major issue here. From the error message it's obvious that you are trying to access your doctrine repository using the entity manager. Something like:
$repo = $em->getRepository('whatever');
The service container code is never being used and it really does not matter what you do, you still won't get your container injected. Creating a repository as a service requires using the entity manager as a factory and takes some additional lines in your services.yml file.
Something like:
# services.yml
cerad_person.person_repository.doctrine:
class: Cerad\Bundle\PersonBundle\Entity\PersonRepository
factory_service: 'doctrine.orm.default_entity_manager'
factory_method: 'getRepository'
arguments:
- 'Cerad\Bundle\PersonBundle\Entity\Person'
calls:
- [ setContainer, [#container] ]
// controller
$personRepo = $this->get('cerad_person.person_repository.doctrine');
That will give you a repository with the container injected.
#devilciuos - %locale% will only give you the default locale and not whatever is passed as _locale in the request. Unfortunately it seems to take a listener to access the request local via a service: https://github.com/symfony/symfony/issues/5486

Answer 3

You're not passing the container to the constructor, but to setContainer. So you shouuld declare a public method setContainer in SurveyRepository:
Demo/SurveyBundle/Entity/SurveyRepository.php
protected $container;
public function setContainer(Container $container) {
$this->container = $container;
}
or pass the container to the constructor:
DemoSurveyBundle/Resources/Config/services.yml
survey.repository.container_aware:
class: Demo\SurveyBundle\Repository\SurveyRepository
arguments: [#service_container]
Edit:
By the way, if you only need the locale, wouldn't be enough to pass the %locale% parameter instead of the whole container?
survey.repository.container_aware:
class: Demo\SurveyBundle\Repository\SurveyRepository
calls:
- [ setLocale, [ %locale%] ]
protected $locale;
public function setLocale($locale) {
$this->locale = $locale;
}