Deploy from a Git tag with Capistrano

Are you using Capistrano and Git and want to easily deploy from Git tags? It couldn't be simpler

git tag -a 09.10.02.01 -m "Tagging a release"

You can use git tag to list your tags:

git tag
09.10.01.01
09.10.01.02
09.10.02.01

Now make sure you push your tags to the central repository:

git push origin --tags

Now in your Capsitrano deploy script:

set :branch do
  default_tag = `git tag`.split("\n").last

  tag = Capistrano::CLI.ui.ask "Tag to deploy (make sure to push the tag first): [#{default_tag}] "
  tag = default_tag if tag.empty?
  tag
end

This will, on deployment, ask you which tag you want to deploy from (defaulting to the most recent tag).

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