DRY bundler in capistrano

There are a few posts told you how to integrate Bundler into capistrano, the code snippet is as follows

namespace :bundler do
  task :create_symlink, :roles => :app do
    shared_dir = File.join(shared_path, 'bundle')
    release_dir = File.join(current_release, '.bundle')
    run("mkdir -p #{shared_dir} && ln -s #{shared_dir} #{release_dir}")
  end

  task :bundle_new_release, :roles => :app do
    bundler.create_symlink
    run "cd #{release_path} && bundle install --without development test"
  end
end

after 'deploy:update_code', 'bundler:bundle_new_release'

But they are out of date after bundler 1.0 released. You don't need add such codes into your cap file. Now you can add only one line in capistrano to use the bundler

require 'bundler/capistrano'

Bundler 1.0 extracts the capistrano tasks, so we don't need repeat it any more. Besides this, it uses --deployment option that avoids the permission issues on server.

Thanks Bundler makes gem dependencies much easier.