@foreach ($children as $child)
    <option value="{{ $child['id'] }}" {{ request('category_id') == $child['id'] ? 'selected' : '' }}>
        {{ str_repeat('- ', $depth) . $child['name'] }}
    </option>
    @if (!empty($child['children']))
        @include('admin.blog.select-box-filter', ['children' => $child['children'], 'depth' => $depth + 1])
    @endif
@endforeach