sam-manage/app/Models/Juil/PmisManualAttachment.php

<?php

namespace App\Models\Juil;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;

class PmisManualAttachment extends Model
{
    protected $fillable = [
        'manual_id',
        'original_name',
        'file_path',
        'file_size',
    ];

    public function manual(): BelongsTo
    {
        return $this->belongsTo(PmisManual::class, 'manual_id');
    }

    public static function formatSize(int $bytes): string
    {
        if ($bytes >= 1073741824) {
            return round($bytes / 1073741824, 1).' G';
        }
        if ($bytes >= 1048576) {
            return round($bytes / 1048576, 1).' M';
        }
        if ($bytes >= 1024) {
            return round($bytes / 1024, 1).' K';
        }

        return $bytes.' B';
    }
}