README

DTO Builder is a lightweight PHP library that streamlines the process of creating and populating Data Transfer Objects (DTOs) using PHP 8+ attributes. It enables dynamic property hydration, automatic validation, and conversion to arrays with minimal boilerplate.

✨ Features

📦 Instantiate DTOs from arrays
🧪 Attribute-based property validation
🖁️ Convert DTOs to arrays effortlessly
✅ PHP 8 attributes for configuration
🧹 Extendable and easy to integrate

📦 Installation

Install the package via Composer:

composer require fedejuret/dto-builder

🚀 Getting Started

1. Define Your DTO

<?php

class CreateUserDto
{
    private string $firstName;
    private string $lastName;

    public function getFirstName(): string { return $this->firstName; }
    public function setFirstName(string $firstName): CreateUserDto
    {
        $this->firstName = $firstName;
        return $this;
    }

    public function getLastName(): string { return $this->lastName; }
    public function setLastName(string $lastName): CreateUserDto
    {
        $this->lastName = $lastName;
        return $this;
    }
}

This requires calling setters manually for each property. With DTO Builder, you can simplify this dramatically.

2. Use Attributes for Property Mapping and Validation

<?php

use Fedejuret\DtoBuilder\Attributes\Property;
use Fedejuret\DtoBuilder\Attributes\Validations\IsBoolean;
use Fedejuret\DtoBuilder\Attributes\Validations\IsDate;
use Fedejuret\DtoBuilder\Attributes\Validations\IsEmail;
use Fedejuret\DtoBuilder\Attributes\Validations\Length;
use Fedejuret\DtoBuilder\Attributes\Validations\Required;
use Fedejuret\DtoBuilder\Attributes\Validations\IsString;
use Fedejuret\DtoBuilder\Traits\Loadable;
use Fedejuret\DtoBuilder\Traits\Arrayable;

class CreateUserDto
{
    use Arrayable, Loadable;

    #[Property(name: 'first_name')]
    #[Length(min: 4, max: 255)]
    private string $firstName;

    #[Property(name: 'last_name')]
    #[IsString]
    #[Length(min: 8, max: 255)]
    private string $lastName;

    #[Property]
    #[IsDate]
    private string $birthday;

    #[Property]
    #[Required]
    #[IsEmail]
    private string $email;

    #[Property(name: 'email_sent')]
    #[Required]
    #[IsBoolean]
    private bool $emailSent;

    // Getters and Setters...
}

🧰 Traits

`Loadable`

Enables the loadFromArray(array $data): self method, which automatically maps input arrays to DTO properties based on defined attributes.

`Arrayable`

Adds a toArray(): array method, which serializes the DTO to a key-value array using the attribute-defined property names.

🏷️ Attributes

`#[Property]`

Defines mapping behavior for each DTO property.

Attribute	Description
`name`	Overrides the array key name for hydration and serialization.
`setter`	Specifies a custom setter method.
`getter`	Specifies a custom getter method.

✅ Built-in Validations

Use validation attributes to ensure the integrity of your DTO before hydration.

Attribute	Description
`#[Required]`	Ensures the value is present in the input.
`#[IsString]`	Must be of type `string`.
`#[IsEmail]`	Must be a valid email address.
`#[IsDate]`	Must be a valid date string.
`#[IsBoolean]`	Must be a boolean (`true`/`false`).
`#[IsNumeric]`	Must be numeric.
`#[IsInteger]`	Must be an integer.
`#[IsDouble]`	Must be a double/float.
`#[IsArray]`	Must be an array.
`#[IsDomain]`	Must be a valid domain name.
`#[IsIPAddress]`	Must be a valid IP address.
`#[Length(min, max)]`	Validates the string length.
`#[IsIn(availableValues)]`	Validates if value is in array.
`#[IsRegex(pattern)]`	Validates if values match with regex.
`#[IsUuid]`	Validates if values is a valid UUID.

🥪 Running Tests

Clone the repository and install dependencies:

composer install
composer run test

🤝 Contributing

Contributions are welcome! To get started:

Fork the repository
Create a new branch (git checkout -b feature/your-feature)
Commit your changes (git commit -m 'Add new feature')
Push to the branch (git push origin feature/your-feature)
Open a Pull Request

Please follow the PSR-12 coding standard when contributing.

📄 License

This project is licensed under the MIT License. See the LICENSE file for more information.

fedejuret / dto-builder

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