Laravel 4.2 CSRF with regenerated unique per request tokens

filters.php

<?php

Route::filter('csrf', function()
{
	if (Session::token() !== Input::get('_token')) {
        return Redirect::to(Request::session()->get('url.intended'))
            ->withErrors(['danger' => ['Form resubmission blocked. Please do not refresh the page after submitting a form.']])
            ->withInput();
    } else {
        /** regenerate for next request to prevent resubmission even in the event of browsers ignoring redirects after form submission */
        Request::session()->put('url.intended', \Illuminate\Support\Facades\URL::previous());
        Session::regenerateToken();
    }
});

TestController.php

<?php

class TestController extends Controller
{
  
public function __construct()
    {
        $this->beforeFilter('csrf',   ['only' => ['postTest']]);
    }
  
  public function getTest()
  {
    return View::make('view');
  }
  
  public function postTest()
  {
  }

view.blade.php

  <form class="form" role="form" method="post" action="/test/test" accept-charset="UTF-8" id="test">
          <input type="hidden" name="_token" value="<?= csrf_token(); ?>">
          <button class="btn btn-success btn-lg" type="submit">Go</button>
  </form>