rails/rails — pull request #7116 by TildeWill (2012-07-20 04:10:55+00:00)
Title: Allowing customization of id param in resources

When using resources in your routes, you can customize the key that is
used in the params hash as the id for the resource.

This can be useful if you have to expose an API to a third party
service that has domain specific language concerning identification.