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Rails plugin for managing your site's version number.

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Octocat-spinner-32 lib
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Octocat-spinner-32 init.rb
Octocat-spinner-32 install.rb
Octocat-spinner-32 uninstall.rb
README
= App Version

This is a simple plugin that makes it easy to manage the version number of your
Rails application. The version numbers supported by this plugin look like
'2.0.1 M4 (600) of branch by coder on 2008-10-27'.

The components of the version number are:

  2          => major
  0          => minor
  1          => patch
  M4         => milestone
  (600)      => build number (usually Subversion revision)
  branch     => the name of the branch this version is from.
  coder      => the name of the user that made the release
  2008-10-27 => the date of the release

Only the major and minor numbers are required. The rest can be omitted and the
plugin will attempt to do the right thing.

== Install

To install this plugin from gitHub run the following command:

./script/plugin install git://github.com/toland/app_version.git

== Usage

To use, simply place a file in RAILS_ROOT/config called version.yml with the
following format:

  major:     2
  minor:     0
  patch:     1
  milestone: 4
  build:     git-revcount
  branch:    master
  committer: coder
  build_date: 2008-10-27

If the milestone or patch fields are less than 0 then they will not show up
in the version string. The build field can be a build number or one of the
following strings: svn, git-hash or git-revcount. If it is a number then that
number will be used as the build number, if it is one of the special strings
then the plugin will attempt to query the source control system for the build
number. The build date field can be a date or the following string: git-revdate.
If you use the special string it will query the source control system and output 
in YYYY-MM-DD format the commit date of the last revision.

Using 'svn' for the build number will cause the plugin to query Subversion for
the current revision number. Since Git doesn't have a numbered revision we have
to fake it. 'git-revcount' will count the number of commits to the repository
and use that as the build number whereas 'git-hash' will use the first 6 digits
of the current HEAD's hash.

The plugin creates a constant APP_VERSION that contains the version number of
the application. Calling the +to_s+ method on APP_VERSION will result in a
properly formatted version number. APP_VERSION also has +major+, +minor+,
+patch+, +milestone+, +build+, +branch+, +committer+, and +build_date+
methods to retrieve the individual components of the version number.

== Capistrano Usage

When the app_version plugin is installed, it copies a templated edition of the
version.yml file into /lib/templates/version.yml.erb, the initial file shows a
tag for retrieving the revision count with git. It also shows displaying the
branch as specified with "set :branch" in your capistrano deploy.rb, see the
comments in the erb file for more nifty tricks.

When you do a cap deploy, there is a capistrano recipe built-in to the app_version
plugin, which will render the templated version.yml into the standard location as
mentioned above. This happens automatically after the deploy is done.

Both the standard and extended capistrano usage can co-exist in the same project
the dynamic rendering of the version.yml only happens when using capistrano to
deploy your app.

== Rake tasks

This plugin includes 4 new rake tasks:

rake app:install    - will copy the version.yml and version.yml.erb into more user
                      accessible locations (/config, and /lib/templates)

rake app:uninstall  - will remove the files copied in the install task

rake app:render     - will render the erb template into /config/version.yml
                      in case you want to have dynamic values updated via a rake task.
                      Note: certain examples expect the app to be in a git working directory.

rake app:version    - will output the version number of the current rails
                      application.

= License

This plugin is released under the terms of the Ruby license. See
http://www.ruby-lang.org/en/LICENSE.txt.
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