PHP Laravel DTO Helpers

This package offers a set of traits to simplify working with DTOs (Data Transfer Objects) in Laravel. It allows you to:

• Convert a DTO to an array using the AsArray trait.
• Transform a DTO into a JSON string via the AsJson trait.
• Seamlessly serialize a DTO with json_encode() using the AsJsonSerialize trait.
• Clone a DTO with modified properties through the AsCloneable trait.
• Make a DTO with static method make(), using AsMake trait
• Use DTOs as custom casts in Eloquent models.
• Use Array helpers only() or except() from DTO with using AsArray trait.

Installation

Install the library using Composer:

composer require lemax10/dto-helpers

AsArray

Converts your DTO to an array.
Requires: Implements Illuminate\Contracts\Support\Arrayable.

use LeMaX10\DtoHelpers\Traits\AsArray;
use Illuminate\Contracts\Support\Arrayable;

class MyData implements Arrayable
{
    use AsArray;

    public function __construct(
        public string $key,
        public string $value
    ) {}
}

$dto = new MyData(key: 'test1', value: 'value1');

dump($dto->toArray());
// Output: ['key' => 'test1', 'value' => 'value1']

dump($dto->only('key'));
// Output: ['key' => 'test1']

dump($dto->except('key'));
// Output: ['value' => 'value1']

---

AsJson

Converts your DTO to a JSON string.
Requires: Implements Illuminate\Contracts\Support\Jsonable.

use LeMaX10\DtoHelpers\Traits\AsJson;
use Illuminate\Contracts\Support\Jsonable;

class MyData implements Jsonable
{
    use AsJson;
    // ...
}

$dto = new MyData(key: 'test1', value: 'value1');

dump($dto->toJson());
// Output: '{"key":"test1","value":"value1"}'

---

AsJsonSerialize

Enables JSON serialization with json_encode().
Requires: Implements JsonSerializable.

use LeMaX10\DtoHelpers\Contracts\Makeable;
use JsonSerializable;

class MyData implements JsonSerializable
{
    use AsJsonSerialize;

    // ...
}

$dto = MyData::make(key: 'test1', value: 'value1');
dump(json_encode($dto));
// Output: {"key":"test1","value":"value1"}

---

AsMake

Enables JSON serialization with json_encode().
Requires: Implements LeMaX10\DtoHelpers\Contracts\Makeable.

use LeMaX10\DtoHelpers\Contracts\Makeable;
use JsonSerializable;

class MyData implements Makeable
{
    use AsMake;

    // ...
}

class MyDataCustomMake implements Makeable
{
    // ...
    public static function make(...$arguments): static
    {
        // Example so-so
        if (Arr::get($arguments, 'key') === 1) {
            $arguments['value'] = 'valueExample';
        }
        
        return new static(...$arguments);
    }
}

$dto = MyData::make(key: 'test1', value: 'value1');
dump($dto);
// Output: instance of MyData

$dtoCustom = MyDataCustomMake::make(key: 1, value: 'value1');
dump($dto);
// Output: instance of MyDataCustomMake and value equals "valueExample"

---

AsCloneable

Clones a DTO while allowing property overrides.
Requires: Implements LeMaX10\DtoHelpers\Contracts\Cloneable

use LeMaX10\DtoHelpers\Traits\AsArray;
use LeMaX10\DtoHelpers\Traits\AsCloneable;
use LeMaX10\DtoHelpers\Contracts\Cloneable;
use Illuminate\Contracts\Support\Arrayable;

class MyData implements Cloneable, Arrayable
{
    use AsCloneable, AsArray;

    // ...
}

$dto = new MyData(key: 'test1', value: 'value1');

dump($dto->toArray());
// Output: ['key' => 'test1', 'value' => 'value1']

$clone = $dto->clone(['key' => 'test2']);

dump($clone->toArray());
// Output: ['key' => 'test2', 'value' => 'value1']

---

AsMake

Converts your DTO to a JSON string.
Requires: Implements Illuminate\Contracts\Support\Jsonable.

use LeMaX10\DtoHelpers\Traits\AsJson;
use Illuminate\Contracts\Support\Jsonable;

class MyData implements Jsonable
{
    use AsJson;
    // ...
}

$dto = new MyData(key: 'test1', value: 'value1');

dump($dto->toJson());
// Output: '{"key":"test1","value":"value1"}'

---

Eloquent Model Casts

Use your DTO as a custom cast in an Eloquent model.

use LeMaX10\DtoHelpers\Casts\AsDto;
use Illuminate\Database\Eloquent\Model;

class ExampleModel extends Model
{
    protected $casts = [
        'dto' => AsDto::class . ':' . MyData::class,
    ];
    
    // OR
    
    public function casts()
    {
        return [
           'dto' => AsDto::cast(MyData::class),
        ];
    }
}

$model = ExampleModel::find(1);

dump($model->dto);
// Output: instance of MyData

Contributing

Thank you for considering contributing to the DTO Helpers package!

License

The DTO Helpers package is open-sourced software licensed under the MIT license.