PHP Symfony parse JSON response deserialize class constructor

To parse and deserialize a JSON response using PHP Symfony, you can utilize the JsonResponse class and the JsonDecoder component. Here's a step-by-step guide on how to do it:

First, ensure you have the symfony/serializer package installed. You can add it to your composer.json file:

{
    "require": {
        "symfony/serializer-bundle": "^5.4"
    }
}

Then, run composer install.

Create a class that represents the JSON structure you want to deserialize. For example, let's assume you have the following JSON response:

{
    "data": {
        "name": "John Doe",
        "age": 30,
        "city": "New York"
    }
}

Create a new file named User.php in a new directory called src/App/Entity:

namespace App\Entity;

class User
{
    private $data;

    public function __construct(array $data)
    {
        $this->data = $data;
    }

    public function getName(): string
    {
        return $this->data['name'];
    }

    public function getAge(): int
    {
        return $this->data['age'];
    }

    public function getCity(): string
    {
        return $this->data['city'];
    }
}

In your controller, create a method to handle the JSON response and deserialize it:

namespace App\Controller;

use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
use Symfony\Component\HttpFoundation\JsonResponse;
use Symfony\Component\HttpFoundation\Request;
use Symfony\Component\Serializer\Encoder\JsonEncoder;
use Symfony\Component\Serializer\Normalizer\ObjectNormalizer;
use Symfony\Component\Serializer\Serializer;

class JsonController extends AbstractController
{
    public function getUserAction(Request $request)
    {
        $jsonResponse = new JsonResponse();

        $decoder = new JsonDecoder();
        $serializer = new Serializer([new ObjectNormalizer()], [new JsonEncoder()]);

        $content = $request->getContent();
        $userData = $decoder->decode($content, 'json');

        $user = $serializer->deserialize($userData, User::class);

        $jsonResponse->setData($user);

        return $jsonResponse;
    }
}

Finally, create a route for the controller action:

# src/Route/route.yaml

json:
    path: /json
    methods: [GET]
    controller: App\Controller\JsonController::getUserAction

Now, when you make a request to /json with a JSON payload, the controller will deserialize it and return a User object.