Ruby on Rails: Bundler & Capistrano: specify which groups (development, test) are to be excluded when deploying

Question

The Bundler documentation says, that in order to install all necessary bundles when deploying via Capistrano, one need only insert

require 'bundler/capistrano' # siehe http://gembundler.com/deploying.html

in his deploy.rb. Then, upon deployment, Capistrano calls

  * executing "bundle install --gemfile .../releases/20110403085518/Gemfile \
    --path .../shared/bundle --deployment --quiet --without development test"

This works fine.

However, we have a staging setup on our production server, isolated from the real live site, where we test a new app release with (cloned and firewalled) live production data. There, we need test and development gems to be installed.

How do I specify the capistrano command line here? Are there parameters I can use, or do I need to set up my own capistrano task to overwrite Bundler's?

Thank you!

Answer 1

Writing different tasks would certainly keep it simple:

task :production do
  # These are default settings
  set :bundle_without, [:development, :test]
end

task :staging do
  set :bundle_without, [:test]
  # set :rails_env, 'staging'
end

However, if you want to use command line options you could switch on the supplied value:

cap deploy target=staging

And inside your deploy.rb file you could use the option value as:

if target == "staging"
  set :bundle_without, [:test]
  # do other stuff here
end

There's also a more 'proper' configuration object that you can use. I've found a reference to it here: http://ryandaigle.com/articles/2007/6/22/using-command-line-parameters-w-rake-and-capistrano