Rooms belong to venue

app/controllers/api/v1/rooms_controller.rb

@@ -5,8 +5,12 @@ module Api
       respond_to :json
 
       def index
-        @conference ? (rooms = @conference.rooms) : (rooms = Room.all)
-
+        if params[:conference_id].blank?
+          rooms = Room.all
+        else
+          conference = Conference.find_by_guid(params[:conference_id])
+          rooms = conference.venue.rooms if conference.venue
+        end
         respond_with rooms
       end
     end