How do I require a Ruby file?

Question

I have a file called "go.rb" that contains:

require 'turboname'
dictionary = Turboname::Random.new

100999032982389.times do
  name = Turboname::Domain.new(:from => dictionary)
  name.save if name.length < 15 and name.available?
  tld = name.tldize
  name.save(tld) if tld and name.length < 15 and name.available?(tld)
end

turboname.rb is located in the same directory as go.rb. It's the same level. I just want to include this file in this script. I don't want to deal with gems or bundles.

./turboname.rb:1:in `require': no such file to load -- turboname/version (LoadError)
    from ./turboname.rb:1
    from go.rb:1:in `require'
    from go.rb:1

Using Ruby 1.9.3 or later? See this post and the selected answer: http://stackoverflow.com/questions/4965556/why-isnt-current-directory-on-my-ruby-path — Richard Brown, Mar 16 '13 at 20:17

score 3 · Answer 1 · answered Mar 16 '13 at 20:56

Use a `require_relative` Statement

Recent Ruby versions no longer add . to the load path stored in $:. However, one solution is to use Kernel#require_relative to require a file relative to the current value of __FILE__. For example:

require_relative './turboname'

Note that this doesn't work in interactive REPL sessions with irb or pry, but works fine within actual source files.

score 3 · Answer 2 · answered Mar 16 '13 at 21:11

The error isn't telling you it can't find ./turboname.rb. It's telling you that it found that file, but the first line of ./turboname.rb tries to require 'turboname/version', which Ruby can't find. Does ./turboname/version.rb exist? If so, is it readable by the current user?

If everything else checks out, then you have a load-path problem. At the top of go.rb, explicitly add the current working directory (or whichever directory contains turboname.rb and turboname/version.rb (possibly ./lib/) to your load path:

$LOAD_PATH << File.dirname(__FILE__) # for ./
# or
$LOAD_PATH << File.join(File.dirname(__FILE__), 'lib') # for ./lib/

score 1 · Answer 3 · answered Mar 16 '13 at 20:26

1

With Ruby 2.0:

require "#{__dir__}/turboname"

answered Mar 16 '13 at 20:26

sawa

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How do I require a Ruby file?

3 Answers3

Use a require_relative Statement

Use a `require_relative` Statement