Laravel and unique slugs - php

Question

I'm trying to generate an get unique slugs, just like MyBB does, but it doens't work well...
I'm using the plugin https://github.com/cviebrock/eloquent-sluggable/tree/2.x for Laravel 4.2.
So I got this:
use Cviebrock\EloquentSluggable\SluggableInterface;
use Cviebrock\EloquentSluggable\SluggableTrait;
class ForumController extends \BaseController implements SluggableInterface {
use SluggableTrait;
protected $sluggable = [
'build_from' => 'title',
'save_to' => 'slug',
];
And in that Class, I don't know how I need to generate the slug,
it needs to be generated in this function:
public function PostTopic($cid)
{
//Get all the data and store it inside Store Variable
$data = Input::all();
// Make's messages of faults
$messages = array(
'title.required' => 'U moet een titel opgeven!',
'titel.unique' => 'De opgegeven titel bestaat al, gebruik een andere.',
'message.required' => 'u moet een bericht opgeven!',
'spamprt' => 'honeypot', //spam protection
'time' => 'required|honeytime:60'
);
$rules = array(
'title' => 'required',
'message' => 'required'
);
$validator = Validator::make($data, $rules, $messages);
//process the storage
if ($validator->fails())
{
return Redirect::back()->with('errors', $validator->errors())->withInput();
}else{
//store
$thread = new Thread;
$thread->cid = $cid;
$thread->title = Input::get('title');
$thread->message = Input::get('message');
$thread->prefix = 0;
$thread->uid = Auth::id();
$thread->username = Auth::user()->username;
$thread->date_posted = Carbon\Carbon::now();
$thread->save();
Session::put('_token', sha1(microtime()));
//redirect
return Redirect::back()->with('message', 'Uw bericht is succesvol geplaatst!');
}
}
But how? And how do I need to get the slugs to display them in an URL or so?