Question

I’m trying to throw together a quick Sinatra app to call some test ruby scripts that need their own Bundler env to run.

Form a method in my Sinatra app I want to run something like

system("cd /test_app/; bundle exec ruby some_file.rb")

This doesn’t work due to the way that bundler sets up its environment. Is there a way to start a new shell session to execute my script so it works form Sinatra?

Or is there another way to do this? Basically my only requirement is that these scripts can be triggered from links on a webpage so some team members can fire off test processes.

Answer 1

Found this snippet which cleans the bundler env nicely. – http://johnbintz.github.com/blog/2012/02/02/the-cleanest-bundler-env/

Bundler.with_sparkling_clean_env do
  system("cd /test_app; bundle --gemfile ./Gemfile exec ruby #{cmd}")
end

module Bundler
  class << self
    def with_sparkling_clean_env
      oenv = ENV.to_hash

      %w{BUNDLE_GEMFILE RUBYOPT GEM_HOME GIT_DIR GIT_WORK_TREE}.each { |key| ENV.delete(key) }

      yield

      ENV.replace(oenv)
    end
  end
end