Laravel-Docker-Dev-Template/src/app/Models/Setting.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;

class Setting extends Model
{
    protected $fillable = ['key', 'value', 'type'];

    public static function get(string $key, $default = null)
    {
        $setting = static::where('key', $key)->first();
        
        if (!$setting) {
            return $default;
        }

        return match ($setting->type) {
            'boolean' => filter_var($setting->value, FILTER_VALIDATE_BOOLEAN),
            'integer' => (int) $setting->value,
            'array', 'json' => json_decode($setting->value, true),
            default => $setting->value,
        };
    }

    public static function set(string $key, $value, string $type = 'string'): void
    {
        if (in_array($type, ['array', 'json'])) {
            $value = json_encode($value);
        }

        static::updateOrCreate(
            ['key' => $key],
            ['value' => $value, 'type' => $type]
        );
    }
}