Ordering your actions in a Rails controller - Hives/acebook-business-logic GitHub Wiki

From the intro walkthrough:

A frequent practice is to place the standard CRUD actions in each controller in the following order: index, show, new, edit, create, update and destroy. You may use any order you choose, but keep in mind that these are public methods; as mentioned earlier in this guide, they must be placed before declaring private visibility in the controller.