UUID trait for Laravel / Eloquent

HasUuid.php

<?php

namespace App\Traits;

use Illuminate\Support\Str;
use Illuminate\Database\Eloquent\Model;

trait HasUuid
{
    /**
     * Setup model for using UUID during creation and retrieval.
     */
    public static function bootHasUuid(): void
    {
        self::creating(function (Model $model) {
            $model->{$model->getKeyName()} = (string)Str::uuid();
        });

        self::retrieved(function (Model $model) {
            $casts        = [$model->getKeyName() => 'string'];
            $model->casts = $model->casts ? array_merge($model->casts,
                $casts) : $casts;
        });
    }

    public function getIncrementing(): bool
    {
        return false;
    }

    public function getKeyType(): string
    {
        return 'string';
    }

    public function getRouteKeyName(): string
    {
        return 'uuid';
    }
}