@if($model->closed)
    <a href="{{ route('registration_books.pdf_open', ['registration_book' => $model->id]) }}" class="btn btn-sm btn-success">PDF megnyitása</a>
@endif
<a href="{{ route('registration_books.billing.update', ['registration_book' => $model->id]) }}" class="btn btn-sm btn-success">Szerkesztés</a>