public static function update($id)
 {
     self::check_logged_in();
     $params = $_POST;
     $attributes = array('id' => $id, 'name' => $params['name'], 'primaryattribute' => $params['primaryattribute'], 'damagetype' => $params['damagetype'], 'attacktype' => $params['attacktype'], 'primaryrole' => $params['primaryrole'], 'description' => $params['description']);
     $hero = new Hero($attributes);
     $errors = $hero->errors();
     if (count($errors) > 0) {
         View::make('hero/edit.html', array('errors' => $errors, 'attributes' => $attributes));
     } else {
         $hero->update();
         Redirect::to('/hero/' . $hero->id, array('message' => 'Heroa on muokattu onnistuneesti!'));
     }
 }