Old value in multiple select option in laravel blade

Answer 1

I think the best answer to this question is this below

@if(count($categories) > 0)
  @foreach($categories as $category)
      id ,old('lawyer_fields')) ? "selected":"") }}>
                                            {{ $category->name }}
      
  @endforeach
  @else
       بدون انتخاب
@endif