Version number gives you an easy way to get the Subversion revision number in your apps.

It has a Capistrano hook (automatically installed) to save the SVN revision on each deploy.

Anywhere in your app, you can use the constant APP_VERSION to give the version of your code.

Locally, APP_VERSION will return ‘local’.

After your next deploy, the APP_VERSION on the server will return the revision reported by your source repository.

In your views, you can also use the helper method:

        <%= app_version %>