Custom implemetation of rails filters for fuelPHP framework.

Filter’s name can be a embedded controller’s method or a class.

• before: filter is called on controller_started event
• after: filter is called on controller_finished
• around: filter is called on both controller_started and controller_finished events

• only: run filter only on defined actions
• except: skip filter on defined actions
• on: run filter on defined http methods (get, post, put …etc) and 'ajax'

1. Setup filters as class properties

Run ‘ajax_only’ method on get or post, except for action_index()

public $before_filter = array(
    'ajax_only' => array(
        'except'    => 'index',
        'on'        => array('get', 'post')
    )
);

public function ajax_only()
{
    if( ! Input::is_ajax())
    {
        throw new HttpNotFoundException;
    }
}

2. Setup filters under filter() method

You can set filters by using Filter class

public function filter()
{
    Filter::register('after', 'updated')->only('add', 'edit', 'delete')->on('post');
}

public function updated()
{
    // do something here...
}

3. Calling a class instead of embedded controller’s method

It’s possible to use a class as filter, and optionnaly specify a method.
The controller instance and event name are passed to the constructor, or the method if provided in filter name.

Controller:

public $around_filter = array('Bench::action')

class Bench:

class Bench {
    
    public static function action($controller, $event)
    {
        $msg = get_class($controller).' '.$event.' '.$controller->request->action;
        
        Profiler::mark_memory($controller, $msg);
    }
    
}