How to Use Object Manager in Symfony3

Question

Error

      Catchable Fatal Error: Argument 2 passed to Acme\StoreBundle\Security\TokenAuthenticator::__construct() must be an instance of Doctrine\Common\EventManager, instance of Doctrine\Bundle\MongoDBBundle\ManagerRegistry given, called in D:\xamppNew\htdocs\mtl_project\var\cache\dev\appDevDebugProjectContainer.php on line 6178 and defined

TokenAuthenticator.php

        <?php


        namespace Acme\StoreBundle\Security;

        use Doctrine\Common\EventManager;
        use Doctrine\Common\Persistence\ObjectManager;
        use Doctrine\Common\Persistence\ObjectRepository;
        use Doctrine\MongoDB\Connection;
        use Doctrine\ODM\MongoDB\Mapping\ClassMetadataInfo;
        use Doctrine\ODM\MongoDB\Mapping\MappingException;
        use Doctrine\ODM\MongoDB\Hydrator\HydratorFactory;
        use Doctrine\ODM\MongoDB\Proxy\ProxyFactory;
        use Doctrine\ODM\MongoDB\Query\FilterCollection;
        use Doctrine\ODM\MongoDB\Repository\RepositoryFactory;

        //use Acme\StoreBundle\Security\TokenAuthenticator;
        use Lexik\Bundle\JWTAuthenticationBundle\Encoder\JWTEncoderInterface;
        use Lexik\Bundle\JWTAuthenticationBundle\TokenExtractor\AuthorizationHeaderTokenExtractor;
        use Symfony\Component\HttpFoundation\Request;
        use Symfony\Component\HttpFoundation\Response;
        use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
        use Symfony\Component\Security\Core\Exception\AuthenticationException;
        use Symfony\Component\Security\Core\Exception\CustomUserMessageAuthenticationException;
        use Symfony\Component\Security\Core\User\UserInterface;
        use Symfony\Component\Security\Core\User\UserProviderInterface;
        use Symfony\Component\Security\Guard\AbstractGuardAuthenticator;

        class TokenAuthenticator extends AbstractGuardAuthenticator
        {
        /**
        * @var JWTEncoderInterface
        */
        private $jwtEncoder;
        /**
        * @var Doctrine\Common\Persistence\ObjectManager
        */
        protected $om;
        /**
        * @param JWTEncoderInterface $jwtEncoder
        * @param ObjectManager       $om
        */
        public function __construct(JWTEncoderInterface $jwtEncoder, Doctrine\Common\Persistence\ObjectManager $om)
        {
        $this->jwtEncoder = $jwtEncoder;
        $this->om = $om;
        }
        /**
        * @inheritdoc
        */
        public function getCredentials(Request $request)
        {
        $extractor = new AuthorizationHeaderTokenExtractor(
        'Bearer',
        'Authorization'
        );
        $token = $extractor->extract($request);
        if (!$token) {
        return;
        }
        return $token;
        }
        /**
        * @inheritdoc
        */
        public function getUser($credentials, UserProviderInterface $userProvider)
        {
        $data = $this->jwtEncoder->decode($credentials);
        if ($data === false) {
        throw new CustomUserMessageAuthenticationException('Invalid Token');
        }
        $username = $data['username'];
        return $this->om
        ->getRepository('UserBundle:User')
        ->findOneBy(['username' => $username]);
        }
        /**
        * @inheritdoc
        */
        public function checkCredentials($credentials, UserInterface $user)
        {
        return true;
        }
        /**
        * @inheritdoc
        */
        public function onAuthenticationFailure(Request $request, AuthenticationException $exception)
        {
        }
        /**
        * @inheritdoc
        */
        public function onAuthenticationSuccess(Request $request, TokenInterface $token, $providerKey)
        {
        }
        /**
        * @inheritdoc
        */
        public function supportsRememberMe()
        {
        return false;
        }
        /**
        * @inheritdoc
        */
        public function start(Request $request, AuthenticationException $authException = null)
        {
        return new Response('Token is missing!', Response::HTTP_UNAUTHORIZED);
        }
        }

Refrence

Difference between ObjectManager and EntityManager in Symfony2?

https://github.com/doctrine/mongodb-odm/blob/785c5039d51923d22902fa1249d1e3dd64018838/lib/Doctrine/ODM/MongoDB/DocumentManager.php#L44

• im new in symfonymongodb bundle

• can anyone suggest how can i use object manager in contructor as symfony is throwing errors.

Answer 1

doctrine_mongodb is a service that returns a Doctrine\Bundle\MongoDBBundle\ManagerRegistry object. You can get ObjectManager by calling getManager from it.

<?php


namespace Acme\StoreBundle\Security;

use Doctrine\Bundle\MongoDBBundle\ManagerRegistry;
// ...

class TokenAuthenticator extends AbstractGuardAuthenticator
{

    /**
    * @var Doctrine\Common\Persistence\ObjectManager
    */
    protected $om;

    // ...

    public function __construct(JWTEncoderInterface $jwtEncoder, ManagerRegistry $registry)
    {
        // ...
        $this->om = $registry->getManager();
    }