cookbook assignment

Would appreciate any suggestions on refactoring or ways of simplifying my code. This assignment was pretty hard for me and I think my messy code reflects that a bit. I also noticed a really weird bug yesterday that treats the recipe_id and ingredient_id as string values rather than integers. I have no idea why it is doing this!
You can refine the above two lines into one:
```ruby
redirect_to recipe_path(recipe_id), notice: "Your recipe was successfully updated."
```