How to run jruby script from MRI ruby rails app?

Question

I have a script written with jRuby and I need this script to be executed from rails app (which runs on MRI ruby). I have code like this:

class User < ActiveRecord::Base
  def run_script!
    system "jruby /path/to/my/script/script.rb #{id}"
  end
end

and it works in development! But on Ubuntu production server it returns nil and I have no idea how to make it work.

pje · Answer 1 · 2012-10-13 22:39:09Z

up vote 3 down vote

From the Kernel#system documentation:

Returns nil if command execution fails. An error status is available in $?.

So what does $? tell you?

answered Oct 13 '12 at 22:39

pje
2,6161526

	exit 127 Seems like I don't have jruby in my PATH – makaroni4 Oct 13 '12 at 22:55
	If I specify the path to jruby I get this: `Could not find rake-0.9.2.2 in any of the sources Run 'bundle install' to install missing gems.` – makaroni4 Oct 13 '12 at 23:01
	@makaroni4: What dependencies does `script.rb` have and how are you managing them? – pje Oct 16 '12 at 1:44
	Just require 'java', I solved my problem moving jRuby code to daemon, it is much more clearer than execute script from MRI Rails app imho – makaroni4 Oct 22 '12 at 14:34

1 Answer