How to call class method inside a Laravel view?

I'm trying to find a way to call a method from within my class file inside a blade file. foo() uses the $item variable from the foreach loop. Since I'm looping inside the blade file, I'm unable, or rather, it's bad practise, to call a controller method inside a view, or so I've heard.

MyController

public function getData() {
  $data = DB::paginate(10);
  return view('view', ['data' => $data]);
}

public function foo($var) {
 //do something with $var
 return $var
}

view.blade.php

@foreach ($data as $item)

 <td>{{$item->key}}</td>
 <td>{{ //myController::foo($item) is Essentially the output I need }} </td>

@endforeach

Since $item is generated in the foreach (which is inside the view), I don't know how to call method before it's past to the view in the return statement.

Any suggestions?

via Chebli Mohamed