@foreach ($categories as $category)
    <option value="{{ $category->id }}">{!! BaseHelper::clean($indent) !!}{!! BaseHelper::clean($category->name) !!}</option>
    @if ($category->activeChildren->count())
        {!! Theme::partial('product-categories-select', ['categories' => $category->activeChildren, 'indent' => $indent . '&nbsp;&nbsp;']) !!}
    @endif
@endforeach