upto 2.11

app/controllers/ratings_controller.rb

@@ -7,8 +7,15 @@ class RatingsController < ApplicationController
     @rating = Rating.new
     @beers = Beer.all
   end
+
   def create
     Rating.create params.require(:rating).permit(:score, :beer_id)
     redirect_to ratings_path
   end
+
+  def destroy
+    rating = Rating.find params[:id]
+    rating.delete
+    redirect_to ratings_path
+  end
 end