Elegant Integration of Brick/Money for Laravel

Table of Contents

• Introduction

• Features

• Installation

• Configuration

• Storing Money in the Database

• Usage

  • Casting with a Currency Column (Recommended)
  • Casting with a Fixed Currency
  • Parsing Values
  • Validation Rule

• Testing

• Changelog

• Contributing

• Security

• Credits

• License

Introduction

This package provides seamless, expressive integration of Brick/Money with Laravel. It enables safe, precise handling of monetary values in your application—using value objects, smart casting, robust parsing, and powerful validation tools.

Features

• MoneyCast – Automatically cast Eloquent attributes to Brick\Money\Money.
• MoneyParser – Convert strings, integers, or floats into Money instances safely.
• ValidMoney Rule – Validate monetary input with min/max boundaries, type safety, and nullability.

Installation

Install via Composer:

composer require elegantly/laravel-money

Configuration

Publish the configuration file if you need to customize defaults:

php artisan vendor:publish --tag="money-config"

Default config (config/money.php):

return [
    'default_currency' => 'USD',
];

Storing Money in the Database

For maximum precision, store money using:

• a bigInteger column for the amount (in the smallest currency unit)
• a string column for the ISO currency code

This avoids floating-point precision issues and ensures accurate calculations.

Example migration:

Schema::create('invoices', function (Blueprint $table) {
    $table->id();
    $table->bigInteger('amount');   // e.g., 1000 = $10.00
    $table->string('currency', 3);  // ISO 4217 code
    $table->timestamps();
});

Usage

Casting with a Currency Column (Recommended)

If your model stores both amount and currency, reference the currency column in the cast:

use Elegantly\Money\MoneyCast;
use Brick\Money\Money;

/**
 * @property Money $amount
 * @property string $currency
 */
class Invoice extends Model
{

    protected function casts(): array
    {
        return [
            'amount' => MoneyCast::of('currency'),
        ];
    }
}

Casting with a Fixed Currency

If the currency is known and constant, define it directly:

use Elegantly\Money\MoneyCast;
use Brick\Money\Money;

/**
 * @property Money $amount
 * @property Money $cost
 */
class Invoice extends Model
{
    protected function casts(): array
    {
        return [
            'cost'  => MoneyCast::of('EUR'),
            'price' => MoneyCast::of('USD'),
        ];
    }
}

Parsing Values

MoneyParser converts common numeric and string formats into Money instances:

use Elegantly\Money\MoneyParser;

MoneyParser::parse(null, 'EUR');     // null
MoneyParser::parse(110, 'EUR');      // 110.00 €
MoneyParser::parse(100.10, 'EUR');   // 100.10 €
MoneyParser::parse('', 'EUR');       // null
MoneyParser::parse('1', 'EUR');      // 1.00 €
MoneyParser::parse('100.10', 'EUR'); // 100.10 €

The parser handles nullability, empty strings, integers, floats, and decimal string formats gracefully.

Validation Rule

Using ValidMoney in Livewire

namespace App\Livewire;

use Elegantly\Money\Rules\ValidMoney;
use Livewire\Component;

class CustomComponent extends Component
{
    #[Validate([
        new ValidMoney(nullable: false, min: 0, max: 100),
    ])]
    public ?int $price = null;
}

Using ValidMoney in Form Requests

namespace App\Http\Requests;

use Elegantly\Money\Rules\ValidMoney;
use Illuminate\Foundation\Http\FormRequest;

class CustomFormRequest extends FormRequest
{
    public function rules()
    {
        return [
            'price' => [
                new ValidMoney(
                    nullable: false,
                    min: 0,
                    max: 100
                ),
            ],
        ];
    }
}

Testing

Run the test suite:

composer test

Changelog

See the CHANGELOG for a full history of updates.

Contributing

Contributions are welcome! Review the CONTRIBUTING file for details.

Security

If you discover a security vulnerability, please refer to the security policy.

Credits

• Quentin Gabriele
• All Contributors

License

This package is open-source software released under the MIT License. See LICENSE.md for details.