Pass parameter from form to Controller Laravel

I'm trying to understand how to pass parameters via URL in Laravel.

In my case I've a home page (/) (HomeController@get__home and view home) that contains n data get from a database table. The user can select one of them and go to the next page.

The second url page is /{param from first page}/login

The field {param from first page} comes from (of course) first page and depends on which record was selected.

I've read this, but I think I'm out of the way.

I can not find a way to pass the parameter to the url.

In my Route.php:

Route::get("/", "HomeController@home");
Route::get("/{position}/login", "LoginController@login");

and in Controllers:

class HomeController extends Controller
{
    public function home(){

      $foos = Foo::all();

      return view('home')->with('foos',$foos);
    }
}

class LoginController extends Controller
{
  public function login(Foo $foo)
  {
    return view('login');
  }
}

and in home.blade.php

<form class="" action="" method="post">
...

via Chebli Mohamed