Bundler with rails-2.2.2

I am working on a rails application, which is on rails-2.2.2. I have used bundler on rails-3 application, but never tried bundler for rails-2.2.2. The benefit of bundler is huge, it is gem manager for rails application. So, now no pain of vendoring/localizing gems in rails application.

gembundler.com gives step-by-step process on how to install/configure bundler for rails-2.3.x and rails-3.x applications. So, I wanted to find out how does it work with rails-2.2.2 application.

So, here is how I did.

• First of all I have installed bundler
  gem install bundler // installed bundler 1.0.10
• Updated rubygems
  gem update --system // rubygems > 1.3.6
• Created config/preinitializer.rb file with below content:
  begin
    require "rubygems"
    require "bundler"
  rescue LoadError
    raise "Could not load the bundler gem. Install it with `gem install bundler`."
  end
  
  if Gem::Version.new(Bundler::VERSION) <= Gem::Version.new("0.9.24")
    raise RuntimeError, "Your bundler version is too old for Rails 2.3." +
     "Run `gem install bundler` to upgrade."
  end
  
  begin
    # Set up load paths for all bundled gems
    ENV["BUNDLE_GEMFILE"] = File.expand_path("../../Gemfile", __FILE__)
    Bundler.setup
  rescue Bundler::GemNotFound
    raise RuntimeError, "Bundler couldn't find some gems." +
      "Did you run `bundle install`?"
  end
   
• Created Gemfile with something similar:
  require 'rubygems'
  source 'http://rubygems.org'
  source 'http://gemcutter.org'
  source 'http://gems.github.com'
  
  gem 'rails', '2.2.2'
  gem 'hpricot', '0.6.0'
  gem "composite_primary_keys", '1.0.8'
  gem 'javan-whenever', '0.3.7'
  gem 'mysql', '2.8.1'
  gem 'activerecord-oracle_enhanced-adapter', '1.1.9'
  gem 'ruby-oci8', '1.0.3'
  
  group :test do
    gem 'mocha', '0.9.5'
    gem 'rspec',             '1.3.1', :require => 'spec'
    gem 'rspec-rails',       '1.3.3'
    gem 'database_cleaner',  '0.5.0'
    gem 'capybara'
    gem 'ruby-debug'
    gem 'factory_girl'
  end
• From the application root, I ran:
  bundle install

That is it and I have my application up and running with bundler. Once I tested my application, I removed gems folder from /vendor (no need for localized version of gems now.)