Doctrine EntityManager

Questions Mezzio
1

Hi,
Whats the correct way to use doctrine in Mezzio? Specifically how to obtain instance of the Doctrine\ORM\EntityManager from the container within a factory to pass as constructor argument of related handler?

I’m currently getting ‘You have requested a non-existent service “Doctrine\ORM\EntityManagerInterface”’ and also unsure how and where to define the database parameters in my module.

I have the following factory:

final class UsersHandlerFactory
{
    public function __invoke(ContainerInterface $container): RequestHandlerInterface
    {
        $entityManager = $container->get(EntityManagerInterface::class);

        return new UsersHandler($entityManager);
    }
}

and in related handler:

public function __construct(private EntityManagerInterface $entityManager)
{
}

and config:

public function getDependencies(): array
    {
        return [
            'invokables' => [],
            'factories'  => [
                Handler\UsersHandler::class => Handler\UsersHandlerFactory::class,
            ],
        ];
    }

Thanks

2

The correct way retrieving an EntityManager instance from the service container is …

<?php
declare(strict_types=1);
namespace Marcel\Factory;

use Doctrine\ORM\EntityManager;
...
public function __invoke(ContainerInterface $container): RequestHandlerInterface
{
    $entityManager = $container->get(EntityManager::class);
    return new UsersHandler($entityManager);
}
...

Instead of getting EntityManagerInterface::class just use EntityManager::class. That should fix your issue. The type hints are okay, because the entity manager implements the interface. I personally use Doctrine\Persistence\ObjectManager as type hint, because it 's the most basic interface. Using the EntityManagerInterface is fine, too.

3

Hi @ezkimo,
Thanks for the reply but unfortunately that did not work either. Still requesting a non existent service.
I’ll need to investigate further to establish where the services get defined and how to inspect whats available in the container.

4

Hey,

do you use the vendor package roave/psr-container-doctrine? If not, what do you use instead for doctrine implementation in mezzio?

If you 're using roave/psr-container-doctrine you can define a factory in your application config.

return [
    'dependencies' => [
        'factories' => [
            'doctrine.entity_manager.orm_default' => 
                \Roave\PsrContainerDoctrine\EntityManagerFactory::class,
        ],
    ],
];

Taken from: GitHub - Roave/psr-container-doctrine: Doctrine Factories for PSR-11 Containers

You 're able to call the entity manager instance by the name its registered in the config.

$container->get('doctrine.entity_manager.orm_default');
5

Hi - thanks for the reply. Yes was using that but had it incorrectly configured. I’ve moved the config into:
config/autoload/development.local.php
which hopefully is correct, but then receive another error:
Class "Doctrine\Common\Cache\ArrayCache" not found

So need to familiarise myself with the config side of things more :slight_smile:

6

If you are willing to dig into some code, you can have a look at a real-life example.

We configure roave/psr-container-doctrine in config/autoload/doctrine.global.php. It could be a different file name, but it make sense to me to split doctrine stuff from other things. (the actual login/password will be in a non-versioned config/autoload/local.php).

Then we configure the container with an alias first in my-ichtus/dependencies.global.php at a4d77f0b05ec7c5d065787c11c03982508701c22 · Ecodev/my-ichtus · GitHub. And most importantly we configure the EntityManager factory in my-ichtus/dependencies.global.php at a4d77f0b05ec7c5d065787c11c03982508701c22 · Ecodev/my-ichtus · GitHub.

In our case our custom EntityManagerFactory is pretty straighforward and is only needed for our special use of filters. Most likely you can take a shortcut and configure the container directly with \Roave\PsrContainerDoctrine\EntityManagerFactory instead.

Finally all of this can be used like this: my-ichtus/ImageFactory.php at a4d77f0b05ec7c5d065787c11c03982508701c22 · Ecodev/my-ichtus · GitHub

$entityManager = $container->get(EntityManager::class);