public function changeNotifications(Request $request)
    {
        $this->validate(
            $request,
            [
                'notifications' => 'required|array',
            ]
        );

        foreach ($request->input('notifications') as $notification => $enable) {
            Auth::user()->setNotification($notification, $enable);
        }

        Auth::user()->save();

        return redirect()->back()->withStatus(trans('mustard::account.notifications_changed'));
    }