Comments on: Show the current SVN revision in your Rails app

By: Marcin Kulik

Marcin Kulik — Sun, 31 May 2009 23:21:32 +0000

Guys, try my Rack middleware for showing revision info on demo/staging servers. It allows to completely remove revision-displaying code from your app’s layout and/or partials (which shouldn’t be there at all). Check it out at http://sickill.net/blog/2009/06/01/rack-middleware-showing-git-or-svn-revision.html

By: dpbmcvtk

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By: Elwyn

Elwyn — Fri, 16 May 2008 14:53:11 +0000

Great article and comments, really helpful. However, what you actually need is the following if your using capistrano’s “free” revision number.

run “echo \”REVISION:#{real_revision}\” > #{release_path}/app/views/shared/_version.rhtml”

revision will just spit out a useless “HEAD”

:-)

By: de tomKronieken » Blog Archive » links for 2008-01-09

de tomKronieken » Blog Archive » links for 2008-01-09 — Wed, 09 Jan 2008 19:21:34 +0000

[...] Ariejan.net » Show the current SVN revision in your Rails app Shared with shareomatic.com (tags: rails svn) [...]

By: jc

jc — Mon, 18 Jun 2007 03:40:54 +0000

Capistrano now seems to give you a “revision” variable for free.

This is what I’m doing:
run “echo \”REVISION:#{revision}\” > #{release_path}/app/views/shared/_version.rhtml”

By: Alexander

Alexander — Fri, 13 Apr 2007 16:23:16 +0000

Hi,

since ’svn info’ output is pretty much YAML, I simply do the following:

deploy.rb:
task :publish_revision do
run “svn info #{release_path} > #{release_path}/config/appversion.yml”

and then in the app: read this file as a hash:

environment.rb:
APP_VERSION = File.file?(‘config/appversion.yml’) ? YAML.load_file(‘config/appversion.yml’) : “”

in the view:

< %= APP_VERSION %>

and so on :)

By: Ariejan

Ariejan — Fri, 16 Mar 2007 09:15:16 +0000

Your version has to run subversion every time you request the active revision.

My script only does that once so there would be a performance advantage to my version.

By: Aaron Namba

Aaron Namba — Fri, 16 Mar 2007 01:55:41 +0000

That seems… complicated. I use svnversion to get that info. It’s a bit slow though, so I cache the result. This is from my application.rb:

def build_number
if RAILS_ENV == ‘production’
if !defined?(@@build_number)
svnversion = `svnversion #{RAILS_ROOT}`
svnversion =~ /:?(\d )[MS]?$/
@@build_number = $1
end
@@build_number
else
‘BUILD’
end
end
helper_method :build_number

By: Bitbutter

Bitbutter — Sun, 28 Jan 2007 13:04:14 +0000

Thanks for this write-up! i was thinking about the best way to do this very thing.