Route after filters are not being canceled when before filter fails - laravel-4

Question

According to the docs, when the before filter of a route fails, the after filter is canceled, but it doesn't seem to be the case. I'm have a navigation pulled from the database. My route before filter whether on a Route::group or a plain route checks whether a person has visited that a certain page. If it hasn't, it will return a Redirect::route('new route').
The route after filter will add a row to a visited_pages table.
What is happening when I click on a link where I haven't visited its prerequisite page, is it will redirect. But - it will still add a row to the database. So the after isn't being canceled. It still fires.
The way I tested this was I was logged in and was on a page. Cleared the page visits from the database. I then clicked on my "classroom" nav item. This requires "orientation"
What gets entered into the database is a page visit in the following in this order:
Classroom
Classroom Instructions
Orientation
What I'm expecting to see is:
Orientation
Routes
Route::group(array("prefix"=>"classroom","before"=>"checkPrerequisite"),function()
{
Route::get('/',array(
'as'=>'classroom',
'uses'=>'ClassroomController#index',
'after'=>'addvisit',
));
//there are more routes here, but they don't need after filters.
Route::get('/instructions',array(
'as'=>'classroom.instructions',
'after'=>'addvisit',
function()
{
return View::make('classroom.instructions');
}
));
});
Before filter
Route::filter('checkPrerequisite', function($route, $request)
{
$sPrerequisite = Navigation::where('url','=',Navigation::where('url','=',Route::currentRouteName())->first()->prerequisite)->first();
// get the module id from session
$mod_id = Session::get('current_module');
// get the page from the user_page_visits
$page = Auth::user()
->pages()
->where('module_id','=',$mod_id)
->where('nav_id','=',$sPrerequisite->id)
->first();
if(!$page) return Redirect::route($sPrerequisite->url);
});
After filter
Route::filter('addvisit', function($route, $request, $response)
{
// get the current route
$current = Route::currentRouteName();
// get the id of the navigation item with this route
$nav_id = Navigation::where('url','=',$current)->first()->id;
// get the module id from cache
$mod_id = Session::get('current_module');
// see if the page has been visited
$page = Auth::user()
->pages()
->where('module_id','=',$mod_id)
->where('nav_id','=',$nav_id)
->first();
if($page)
{
// if it has been visited, increment the visits column by 1
$page->increment('visits');
}
else
{
// otherwise, create a new page visit
$visit = new UserPageVisits;
$visit->user_id = Auth::user()->id;
$visit->module_id = $mod_id;
$visit->nav_id = $nav_id;
$visit->save();
}
});