first iteration of search functionality - likely to fail hard

app/Http/Controllers/SearchController.php

@@ -42,7 +42,7 @@ class SearchController extends Controller
                  $result['hops'][$i]['name'] = $hopname;
                  $i++;
                };
-               $grains = Grainbill::where('beer_id', $result->beer_id)->pluck('grain_id');
+               $grains = Grainbill::where('beer_id', $result->beer_id)->distinct('grain_id');
                $grainarr = array();
                foreach ($grains as $grain){
                  $grainname = Grain::where('id', $grain->grain_id)->value('name');