<?php
/**
 * Created by PhpStorm.
 * User: danilo
 * Date: 02/03/16
 * Time: 14:04
 */
namespace Modules\Core\Database\Behaviours\Uuid;

use Rhumsaa\Uuid\Uuid as RhumsaaUuid;

/**
 * Class Uuid
 *
 * Manages the usage of creating UUID values for primary keys. Drop into your models as
 * per normal to use this functionality. Works right out of the box.
 *
 * Taken from: http://garrettstjohn.com/entry/using-uuids-laravel-eloquent-orm/
 *
 * @package Eloquence\Database\Traits
 */
trait Uuid
{
    /**
     * The "booting" method of the model.
     *
     * @return void
     */
    protected static function bootUuid()
    {
        /**
         * Attach to the 'creating' Model Event to provide a UUID
         * for the `id` field (provided by $model->getKeyName())
         */
        static::creating(function ($model) {
            $key = $model->getKeyName();
            if (empty($model->$key)) {
                $model->$key = (string)$model->generateNewUuid();
            }
        });
    }

    /**
     * Get a new version 4 (random) UUID.
     *
     * @return \Rhumsaa\Uuid\Uuid
     */
    public function generateNewUuid()
    {
        return RhumsaaUuid::uuid4();
    }
}