gist: 48967 - Git SHA1 of HEAD in your Rails App- GitHub


  
      deploy.rb #
    
    
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              after "deploy:update_code", "deploy:write_sha1"
namespace :deploy do  
  desc "write sha1 to file"
  task :write_sha1 do
    run "cd #{latest_release} && git show-ref --heads --hash=7 > #{latest_release}/config/HEAD"
  end
end
            
          
      production.rb #
    
    
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              git_sha1_path = "#{RAILS_ROOT}/config/HEAD"
GIT_SHA1 = if File.file?(git_sha1_path)
             File.open(git_sha1_path).readlines[0]
           end
Description:	Git SHA1 of HEAD in your Rails App
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