filtering-stories-by-status-controller

If you try to use the filter widget, you'll see it adds a `status` parameter in the query string. We need to pick that up and do something useful with it in the Projects controller at `app/controllers/projects_controller.rb`. Happily, we can leverage the `apply_scopes` method we earlier used in the `show` method for searching and sorting to also handle filtering by adding a `:status_is` argument:

SHOW_PATCH

Status filtering should now be working.

(To do: explain the scope being used there)

app/controllers/projects_controller.rb

@@ -8,6 +8,7 @@ def show
     @project = find_instance
     @stories =
       @project.stories.apply_scopes(:search    => [params[:search], :title],
+                                    :status_is => params[:status],
                                     :order_by  => parse_sort_param(:title, :status))
   end