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Symfony6 Create Application

Few steps to do after creating a Symfony 6 application

Disclaimer: What I say here applies to me, and the purpose is to share that, because it can help other.

Installing a new Symfony 6 application

I use to create Symfony applications with the Symfony CLI.

I issue:

symfony new my_application

At the present time (January 2022), it installs a version 6.0.2 one

Running the new application

After installing, I use to create a Controller and try to Respons a simple JSON like this

namespace App\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;

class DefaultController extends AbstractController
{

    public function index(): Response
    {
        return $this->json(["OK"]);
    }
}

It does almost nothing, but it make me confident on the basic that works.

Create the route

I use to use "routes.yaml" to define and enumerate my routes, but nowadays default creation is configured to use "annotations"

So, because it is OK for me to follow the defaults, I edit my controller to use annotations:

namespace App\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\Response;
use Symfony\Component\Routing\Annotation\Route;

class DefaultController extends AbstractController
{
    /**
     * @Route("/")
     */
    public function index(): Response
    {
        return $this->json(["OK"]);
    }
}

But this doen't work yet, I need to perform one last step: installing "annotations"

This is done with

composer require doctrine/annotations

Conlusion

To summarize, in order to fire-up a Symfony application, we need to:

symfony new my_application
cd my_application
composer require doctrine/annotations
symfony server:start --no-tls

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