file/app/Models/Collection.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Casts\Attribute;
use Illuminate\Database\Eloquent\Factories\HasFactory;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class Collection extends Model
{
    use HasFactory, SoftDeletes;

    protected $fillable = [
        "name",
        "path",
        "public",
        "disk",
        "count",
        "tmp_support",
        "remove_tmp_time",
        "max_file_size",
        "min_file_size",
        "max_width",
        "min_width",
        "max_height",
        "min_height",
        "alt_required",
        "description_required",
        "exts",
        "ext",
        "mimetypes",
        "model",
        "expire_date",
    ];

    protected $casts = [
        'exts' => 'array',
        'mimetypes' => 'array',
    ];

    protected function exts(): Attribute
    {
        return Attribute::make(
            set: fn ($value) => json_encode($value),
        );
    }

    protected function mimetypes(): Attribute
    {
        return Attribute::make(
            set: fn ($value) => json_encode($value),
        );
    }

    public function getExts()
    {
        return implode(",", app()->collection->exts);
    }

    public function getMimeTypes()
    {
        return implode(",", app()->collection->mimetypes);
    }

}