Symfony DTO Bundle

Symfony bundle integration for php-collective/dto.

Installation

composer require php-collective/symfony-dto

The bundle will be auto-configured if you're using Symfony Flex.

Manual Registration

If not using Flex, add to config/bundles.php:

return [
    // ...
    PhpCollective\SymfonyDto\PhpCollectiveDtoBundle::class => ['all' => true],
];

Configuration

Create config/packages/php_collective_dto.yaml:

php_collective_dto:
    config_path: config/          # Path to DTO config files (relative to project root)
    output_path: src/Dto/        # Path for generated DTOs
    namespace: App\Dto           # Namespace for generated DTOs
    typescript_output_path: assets/types  # TypeScript output
    jsonschema_output_path: config/schemas  # JSON Schema output
    enable_value_resolver: true  # Enable controller DTO auto-resolution

Usage

1. Initialize DTO configuration

bin/console dto:init

This creates a config/dtos.php file with a sample DTO definition (PHP format is the default). You can also use --format=xml or --format=yaml.

The generated config looks like:

use PhpCollective\Dto\Builder\Dto;
use PhpCollective\Dto\Builder\Field;
use PhpCollective\Dto\Builder\Schema;

return Schema::create()
    ->dto(Dto::create('User')->fields(
        Field::int('id'),
        Field::string('name'),
        Field::string('email')->nullable(),
    ))
    ->toArray();

2. Generate DTOs

bin/console dto:generate

Options:

• --dry-run - Preview changes without writing files
• --config-path - Override config path
• --output-path - Override output path
• --namespace - Override namespace
• -v - Verbose output

3. Generate TypeScript interfaces

bin/console dto:typescript
bin/console dto:typescript --multiple-files --readonly

4. Generate JSON Schema

bin/console dto:jsonschema
bin/console dto:jsonschema --multiple-files

5. Use your DTOs

use App\Dto\UserDto;

$user = new UserDto([
    'id' => 1,
    'name' => 'John Doe',
    'email' => 'john@example.com',
]);

return $this->json($user->toArray());

DTO Mapping Helpers

use App\Dto\UserDto;
use PhpCollective\SymfonyDto\Mapper\DtoMapper;

$dto = DtoMapper::fromArray(['name' => 'Mark'], UserDto::class);

$dtos = DtoMapper::fromIterable($rows, UserDto::class);
$collection = DtoMapper::fromCollection($doctrineCollection, UserDto::class);

// Generic pagination wrapper
$pagination = DtoMapper::fromPaginated(
    items: $pageItems,
    total: $total,
    perPage: $perPage,
    page: $page,
    dtoClass: UserDto::class,
);

JSON Response Helper

use PhpCollective\SymfonyDto\Http\DtoJsonResponse;

return DtoJsonResponse::fromDto($dto);
// or
return DtoJsonResponse::fromCollection($dtos);

Controller DTO Resolution

When enable_value_resolver is enabled, you can use #[MapRequestDto] to map request data to DTOs:

use PhpCollective\SymfonyDto\Attribute\MapRequestDto;

#[Route('/users', methods: ['POST'])]
public function create(#[MapRequestDto] UserDto $dto): Response
{
    // $dto is built from request data
}

The source option controls where data comes from: body, query, request, or auto.

Collections

The bundle automatically registers Doctrine's ArrayCollection for DTO collection fields. Define collection fields with the [] suffix:

Field::array('roles', 'Role'),  // Role[] collection
Field::array('tags', 'string'), // string[] collection

After generating, collection fields use Doctrine's ArrayCollection class with its methods (filter, map, first, etc.).

Validation Bridge

Automatically convert DTO validation rules to Symfony Validator constraints:

use PhpCollective\SymfonyDto\Validation\DtoConstraintBuilder;
use Symfony\Component\Validator\Validation;

$constraint = DtoConstraintBuilder::fromDto(new UserDto());
$violations = Validation::createValidator()->validate($data, $constraint);

See Usage docs for details.

Supported Config Formats

The bundle supports multiple config file formats:

• dtos.php - PHP format (default)
• dto.xml - XML format
• dto.yml / dto.yaml - YAML format
• dto/ subdirectory with multiple files

License

MIT