README

Eloquent-MoneyPHP

Automatically cast Eloquent columns to MoneyPHP objects.

Installation

Install Eloquent-MoneyPHP with composer:

composer install chrgriffin/eloquent-moneyphp

Requirements

• PHP >= 7.1.3
• Laravel >= 5.6

This package does make one key assumption: that you are storing money in your database as integers, not floating point values. For example, eight dollars would be stored as 800, instead of 8.00. To find out why you should store currency and other floating point values this way, read about the classic problem here.

Usage

Usage is extremely simple. Eloquent-MoneyPHP provides a trait that can be used on any Eloquent model in conjunction with an array of column names:

<?php

namespace App;

use EloquentMoneyPHP\HasCurrency;

class MyModel extends Model
{
    use HasCurrency;
    
    protected $currencies = [
        'total_usd' => 'USD',
        'total_eur' => 'EUR'
    ];
}

In the above setup, accessing the total_usd or total_eur attribute will automatically convert the attribute to a MoneyPHP object:

<?php

$model = MyModel::find(1);
$total = $model->total_usd; // <-- this will return a MoneyPHP object

Eloquent-MoneyPHP also supports storing a money amount as a json string in a text column.

"{\"amount\": 800,\"currency\": \"USD\"}"

Then configure your model appropriately:

<?php

namespace App;

use EloquentMoneyPHP\HasCurrency;

class MyModel extends Model
{
    use HasCurrency;
    
    protected $currencies = [
        'total' => 'json'
    ];
}

Under the Hood

Eloquent-MoneyPHP makes use of the Laravel magic methods getAttribute() and setAttribute() in conjunction with the configured array of column names to determine if it should cast a given attribute to a MoneyPHP object.

This could obviously prove problematic if you are already implementing getAttribute() or setAttribute() yourself. Luckily, you can include the package behaviour in the methods yourself, if you need to:

<?php

namespace App;

use EloquentMoneyPHP\HasCurrency;

class MyModel extends Model
{
    use HasCurrency;
    
    protected $currencies = [
        'total' => 'json'
    ];
    
    public function getAttribute($key)
    {
        if($this->attributeIsMoney($key)) {
            return $this->getMoneyAttribute($key);
        }

        // the rest of your logic
    }
        
    public function setAttribute($key, $value)
    {
        if($this->attributeIsMoney($key)) {
            return $this->setMoneyAttribute($key, $value);
        }

        // the rest of your logic
    }
}