//if a review is added, then we need to re-calculate avg rating
	function add($user_id = null, $movie_id = null, $id = null){
	//make sure the user is logged on or is an admin
	//if($this->checkUserSession($user_id) || $this->checkAdminSession()){
	if($this->checkUserSession($user_id)){
		//make sure the user didn't already review this movie TODO
		if (!empty($this->data)){
		//make sure the user is allowed to rate/write review (check age vs. mpaa rating)
		if(($review['Movie']['mpaa_rating'] == "NC-17" && $review['User']['Age'] >= 18)  ||
			($review['Movie']['mpaa_rating'] == "R" && $review['User']['Age'] >= 17)     ||
			($review['Movie']['mpaa_rating'] == "PG-13" && $review['User']['Age'] >= 13) ||
			($review['Movie']['mpaa_rating'] == "PG" && $review['User']['Age'] >= 10)    ||
			($review['Movie']['mpaa_rating'] == "G")) {
			$this->Review->create();
			if ($this->Review->save($this->data)) {
				$this->Session->setFlash(__('Your review has been saved.', true));
				//update the ratings
				$var = "UPDATE movies SET num_ratings = num_ratings + 1";
				mysql_query($var);
				$var1 = "UPDATE movies SET avg_ratings = sum_ratings/num_ratings";
				mysql_query($var1);
				$this->redirect(array('action' => 'index'));
			} else {
				$this->Session->setFlash(__('Your review could not be saved. Please, try again.', true));
			}
		} else {
				$this->Session->setFlash(__('You are not old enough to review/rate this movie.', true));
		}
		}
	}
	$movies = $this->Review->Movie->find('list');
	$users = $this->Review->User->find('list');
	$this->set(compact('movies', 'users'));
	}