Assign value to html tag in Laravel 5.7

Why I can't assign some value from controller to value in html tag if this code is in include file ?

 // checkbox.blade.php
 @foreach($roles as $role)
            <input type="checkbox" name="" value="" >        
 @endforeach

 // index.blade.php
 @include('checkbox');

I got this output

via Chebli Mohamed