usher-manage-stack/app/Models/ArticleAttachment.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;

class ArticleAttachment extends Model
{
    use HasFactory;

    protected $fillable = [
        'article_id',
        'file_path',
        'original_filename',
        'mime_type',
        'file_size',
        'description',
        'download_count',
    ];

    protected $casts = [
        'file_size' => 'integer',
        'download_count' => 'integer',
    ];

    public function article()
    {
        return $this->belongsTo(Article::class);
    }

    public function incrementDownloadCount(): void
    {
        $this->increment('download_count');
    }
}