RecommendationsController example beforeFilter usage

RecommendationsController.php

<?php

class RecommendationsController extends AppController {

    private $recommendation;
    private $actions_that_require_a_recommendation = array('show', 'edit');
    private $actions_that_require_ownership = array('show', 'edit');

    function beforeFilter() {
      if (in_array($this->action, $actions_that_require_a_recommendation)) {
        $this->load_recommendation($this->input->get('recommendation_id'));
      }
      if (in_array($this->action, $actions_that_require_ownership)) {
        $this->check_object_ownership();
      }
      
    }

    function show {
      // we've already loaded up $this->recommendation so
      // do whatever you need to do with it
      
    }
    
    private function load_recommendation($id) {
      $this->recommendation = Recommendation->find_by_id($id);
      if(empty($this->recommendation)) {
        throw new FileNotFoundException(); // throw a 404
      }
    }
    
    private function check_object_ownership() {
      $valid = false;
      
      if($this->recommendation->owner_id == $auth->user_id)) {
        $valid = true
      }
      
      if(!$valid) {
        throw new ForbiddenException(); // throw a 401
      }
    }
    
}

?>