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Guide

Declare a Resource

design

This class represents an API resource

// src/App/ApiResource.php
namespace App\ApiResource;

The #[ApiResource] attribute registers this class as an HTTP resource.

use ApiPlatform\Metadata\ApiResource;

These are the list of HTTP operations we use to declare a “CRUD” (Create, Read, Update, Delete).

use ApiPlatform\Metadata\Delete;
use ApiPlatform\Metadata\Get;
use ApiPlatform\Metadata\GetCollection;
use ApiPlatform\Metadata\Patch;
use ApiPlatform\Metadata\Post;
use ApiPlatform\Validator\Exception\ValidationException;

Each resource has its set of Operations. Note that the uriTemplate may use the id variable which is our unique identifier on this Book.

#[ApiResource(
    operations: [
        new Get(uriTemplate: '/books/{id}'),

The GetCollection operation returns a list of Books.

        new GetCollection(uriTemplate: '/books'),
        new Post(uriTemplate: '/books'),
        new Patch(uriTemplate: '/books/{id}'),
        new Delete(uriTemplate: '/books/{id}'),
    ],

This is a configuration that is shared accross every operations. More details are available at ApiResource::exceptionToStatus.

    exceptionToStatus: [
        ValidationException::class => 422,
    ]
)]

If a property named id is found it is the property used in your URI template we recommend to use public properties to declare API resources.

class Book
{
    public string $id;
}

Check our next guide to provide the resource state.

// src/App/Playground.php
namespace App\Playground;
use Symfony\Component\HttpFoundation\Request;
function request(): Request
{
    return Request::create('/docs', 'GET');
}

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