Laravel - Broadcasting - Authorization Callback Model Binding

Just like HTTP routes, channel routes may also take advantage of implicit and explicit route model binding. For example, instead of receiving a string or numeric order ID, you may request an actual Order model instance:

    use App\Models\Order;
    Broadcast::channel('orders.{order}', function ($user, Order $order) {
        return $user->id === $order->user_id;
Unlike HTTP route model binding, channel model binding does not support automatic implicit model binding scoping. However, this is rarely a problem because most channels can be scoped based on a single model's unique, primary key.