How to use silex with Doctrine orm EntityManager?

Question

Am new to the Silex framework. And I would like to do simple SQL DB connection using doctrine entity manager. Kindly give some simple examples.

Thanks in Advance,
SK

Answer 1

Here is a working example of all the following setup below. There is also a YouTube tutorial explaining that setup. Or if you just want something that works right now try: this.

Otherwise the following is an attempt to explain one way to setup and "use silex with Doctrine orm EntityManager":

Install

Add this line into composer.json:

"dflydev/doctrine-orm-service-provider": "1.0.6"

From command line run:

~$ composer update dflydev/doctrine-orm-service-provider

Register

Register the service provider:

$app->register(new Silex\Provider\DoctrineServiceProvider());
$app->register(new Dflydev\Silex\Provider\DoctrineOrm\DoctrineOrmServiceProvider());

Configure

Configure your database and entity mappings. Your paths may be different. A better and more detailed explaination can be found in the Doctrine ORM Service Provider README:

$app['db.options'] = array(
    'driver'   => 'pdo_mysql',
    'charset'  => 'utf8',
    'host'     => '127.0.0.1',
    'dbname'   => '',
    'user'     => '',
    'password' => '',
);

$app['orm.proxies_dir'] = __DIR__.'/../cache/doctrine/proxies';
$app['orm.default_cache'] = 'array';
$app['orm.em.options'] = array(
    'mappings' => array(
        array(
            'type' => 'annotation',
            'path' => __DIR__.'/../../src',
            'namespace' => 'My\\Namespace\\To\\Entity',
        ),
    ),
);

Likely you will want to setup cli-config.php for more info read the Doctrine Configuration Documentation:

<?php
    // http://docs.doctrine-project.org/en/latest/reference/configuration.html
    require __DIR__.'/vendor/autoload.php';
    require __DIR__.'/path/to/app/config.php';
    $newDefaultAnnotationDrivers = array(
        __DIR__."/src/MyNamespace",
    );
    $config = new \Doctrine\ORM\Configuration();
    $config->setMetadataCacheImpl(new \Doctrine\Common\Cache\ApcCache);
    $driverImpl = $config->newDefaultAnnotationDriver($newDefaultAnnotationDrivers);
    $config->setMetadataDriverImpl($driverImpl);
    $config->setProxyDir($app['orm.proxies_dir']);
    $config->setProxyNamespace('Proxies');
    $em = \Doctrine\ORM\EntityManager::create($app['db.options'], $config);
    $helpers = new Symfony\Component\Console\Helper\HelperSet(array(
        'db' => new \Doctrine\DBAL\Tools\Console\Helper\ConnectionHelper($em->getConnection()),
        'em' => new \Doctrine\ORM\Tools\Console\Helper\EntityManagerHelper($em),
    ));

Take it for a spin

At this point you should be able to dump some schema from the command line assuming you have annotated entities in $newDefaultAnnotationDrivers path:

~$ php vendor/bin/doctrine orm:schema-tool:update --dump-sql

With the above setup in place you should also be able to use $app['orm.em'] from a controller method:

$app->match('/form', function (Request $request) use ($app) {

    $em = $app['orm.em'];

    $entity = new \My\Namespace\To\Entity\Form();

    $form = $app['form.factory']->create(new \My\Namespace\To\Form\FormType(), $entity);

    $form->handleRequest($request);

    if ($form->isValid()) {
        $em->persist($entity);
        $em->flush();
    }

    return new Response($app['twig']->render('form.html.twig', array(
        'form' => $form->createView(),
    )));

})->bind('form');