From: Stefan Lang <langstefan@...>
Date: 2005-11-05T08:06:11+09:00
Subject: Re: Setting RUBYLIB

On Friday 04 November 2005 21:19, Stu Glaser wrote:
> Hi,
>
> I currently have a project with two files.  I want to include one
> file from the other without specifying the entire path.  Here's
> what I'm trying to do:
>
> File: ./app/control/first.rb
> puts "HELLO"
>
> File: ./main.rb
> ENV['RUBYLIB'] = "./app"
> require 'control/first.rb'
>
> However, it refuses to find the script ('require': No such file to
> load -- control/first.rb)
>
> When I set RUBYLIB from the (bash) shell, the program runs
> correctly. How can I set it inside the main ruby program?

The RUBYLIB environment variable is read by the ruby interpreter
only at startup. 
Use this:

    $LOAD_PATH.unshift "app"
    require ....

More robust would be to use an absolute path:

    $LOAD_PATH.unshift(File.join(File.dirname(File.expand_path(__FILE__)), 
"app"))
    require ...

HTH,
  Stefan