WebAPP/app/Models/Setting.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Illuminate\Support\Facades\Cache;

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

    public static function get(string $key, ?string $default = null): ?string
    {
        return Cache::remember("setting.{$key}", 3600, function () use ($key, $default) {
            return static::where('key', $key)->value('value') ?? $default;
        });
    }

    public static function set(string $key, ?string $value): void
    {
        static::where('key', $key)->update(['value' => $value]);
        Cache::forget("setting.{$key}");
    }

    public static function clearCache(): void
    {
        $keys = static::pluck('key');
        foreach ($keys as $key) {
            Cache::forget("setting.{$key}");
        }
    }

    /**
     * Prüft ob ein Feature für den gegebenen User sichtbar ist.
     * Admin sieht immer alles.
     */
    public static function isFeatureVisibleFor(string $feature, User $user): bool
    {
        if ($user->isAdmin()) {
            return true;
        }

        $key = "visibility_{$feature}_{$user->role->value}";

        return static::get($key, '1') === '1';
    }
}