rails_gems.rb

  def rails_gems
    gemrc = {
      :verbose => true,
      :gem => '--no-ri --no-rdoc',
      :update_sources => true,
      :sources => [
        'http://rubygems.org'
      ]
     }
     gemrc.merge!(configuration[:rubygems]) if configuration[:rubygems]
     file '/etc/gemrc',
      :ensure   => :present,
      :mode     => '744',
      :owner    => 'root',
      :group    => 'root',
      :content  => gemrc.to_yaml

    # stub for puppet dependencies
    exec 'rails_gems', :command => 'true'

    gemfile_path = rails_root.join('Gemfile')
    gemfile_lock_path = rails_root.join('Gemfile.lock')
    if gemfile_path.exist?
      # Bundler is initially installed by deploy:setup in the ruby:install_moonshine_deps task
      configure(:bundler => {})
      package 'bundler',
        :ensure => (configuration[:bundler][:version] || :latest),
        :provider => :gem,
        :before => exec("bundle install")
     
      exec 'bundle install',
        :command => "bundle install | tee #{rails_root.join("..", "..", "shared", "log", "bundle.log")}",
        :cwd => rails_root,
        :before => [exec('rails_gems'), exec('bundle lock')],
        :require => file('/etc/gemrc'),
        :user => configuration[:user]

      exec 'bundle lock',
        :command => 'bundle lock',
        :cwd => rails_root,
        :creates => gemfile_lock_path.to_s,
        :user => configuration[:user]
    else
      return unless configuration[:gems]
      configuration[:gems].each do |gem|
        gem.delete(:source) if gem[:source] && gemrc[:sources].include?(gem[:source])
        gem(gem[:name], {
          :version => gem[:version],
          :source => gem[:source]
        })
      end
    end
  end