public static function show_vars(&$vars, $id)
 {
     $vars['ratings'] = array();
     foreach (Rating::find_by('user_id', $id) as $k => $v) {
         $vars['ratings'][] = array('rating' => $v, 'beer' => Beer::find($v->beer_id));
     }
 }
 public static function show_vars(&$vars, $id)
 {
     $vars['brewery'] = Brewery::find($vars['val']->brewery_id);
     $vars['style'] = Style::find($vars['val']->style_id);
     $ratings = Rating::find_by('beer_id', $id);
     if (count($ratings) > 0) {
         $sum = 0.0;
         foreach ($ratings as $r) {
             $sum += $r->rating;
         }
         $vars['average'] = $sum / count($ratings);
     }
     $vars['ratings'] = array();
     foreach ($ratings as $k => $v) {
         $vars['ratings'][] = array('rating' => $v, 'user' => User::find($v->user_id));
     }
 }