getDoctrine() null on Symfony 3.4-CodePudding

I have an error on a symfony 3.4 project. I'm trying to manage the display of a notification in the menu of my application. So I created a CustomController which extends Controller.

Then I made all my other controllers inherit from CustomController.

But when I make a call to getDoctrine() to reach a repository I get the following error:

"Call to a member function has() on null"

Here is my CustomController:


<?php

namespace AppBundle\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\Controller;


class CustomController extends Controller
{
    public $data = [];
    protected $em;


    public function __construct()
    {
        $this->em = $this->getDoctrine()->getManager();
        $countAttente = $this->em->getRepository('AppBundle:Commandes')->tailleEnAttente("En attente");
        
        $this->data['countAttente'] = $countAttente;
    }
}

I tried to pass the controller as a service in service.yml but it did not change anything

AppBundle\Controller\CustomController:
        class: AppBundle\Controller\CustomController
        arguments: ["@doctrine.orm.entity_manager"]
        calls:
            - [setContainer, ["@service_container"]]

I found many similar topics on this type of error but none of them allowed me to skip this error

Any help is welcome

CodePudding user response：

Autowire your EntityManager directly inside your constructor:

use Doctrine\ORM\EntityManagerInterface;

private $em;

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

Or if you need a specific repository, and autowired is set up with the default configuration you can do the same as well with the repository:

private $repository;

public function __construct(CommandesRepository $repository)
{
    $this->repository = $repository;
}