require not working while writing a gem

Question

i am trying to write a gem using bundler (following ryan's railcast - 245)
i followed everything described by ryan. I also added 4 ruby files in the lib folder to learn about how require works with different gem.

i thought it will automatically require those rb files put in lib folder. but unfortunately while i test it it throws an error saying no such file to load lib/myclass.rb
This what my lorem.rb looks like.

require 'lorem/version'  
require 'lorem/myclass'  

Module Lorem  
.....  
end

What am i missing ? can any body tell how gem require works ?

NB : I use to do it with echoe and it works . but when i am using bulder, gemspec and all i simply dont understand why its not loading files .

My gem Spec file

# -*- encoding: utf-8 -*-
$:.push File.expand_path("../lib", __FILE__)
require "lorem/version"

Gem::Specification.new do |s|
  s.name        = "lorem"
  s.version     = Lorem::VERSION
  s.authors     = ["My Name"]
  s.email       = ["me@domain.com"]
  s.homepage    = ""
  s.summary     = %q{learing bundler gem}
  s.description = %q{Learing bundler gem}

  s.rubyforge_project = "lorem"

  s.files         = `git ls-files`.split("\n")
  s.test_files    = `git ls-files -- {test,spec,features}/*`.split("\n")
  s.executables   = `git ls-files -- bin/*`.split("\n").map{ |f| File.basename(f) }
  s.require_paths = ["lib"]

  #s.add_development_dependency "rspec"
  #s.add_development_dependency "supermodel"
end

thanks in advance

where does this myclass.rb come from? it is not there in the ryan's railcast - 245 description. Try if the file exists and also try my_class.rb — Mithun Sasidharan, Dec 26 '11 at 07:21
myclass.rb is a file which i added in lib/lorem folder. i tried to write the code there in myclass.rb and use it in lorem.rb by requiring it . but it didnt work. — Krishna Prasad Varma, Dec 26 '11 at 08:46
http://stackoverflow.com/questions/4516533/a-problem-with-the-require-keyword-not-finding-the-file-to-load — Mithun Sasidharan, Dec 26 '11 at 08:47
when i inspect the gems folder i see only version.rb in the lib folder. why is that it doesnt copy other ruby files in the lib when doing rake install ? should i need to mention it explicitly anywhere? — Krishna Prasad Varma, Dec 26 '11 at 14:26

buruzaemon · Answer 1 · 2011-12-27T04:54:01.073

1

In your gemspec, try replacing $:.push File.expand_path("../lib", __FILE__) with:

$:.unshift('lib')

edited Dec 27 '11 at 04:54

answered Dec 26 '11 at 09:01

buruzaemon

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i am not doing testing . infact i tried it in a rails project directly by giving gem 'mygem' – Krishna Prasad Varma Dec 26 '11 at 14:26
@KrishnaprasadVarma could you post your gemspec? – buruzaemon Dec 27 '11 at 01:57
i have added gemspec to the question. – Krishna Prasad Varma Dec 27 '11 at 04:34
@KrishnaprasadVarma, I have updated my answer based on your gemspec. Give it a try, and let me know if it works. Good luck! – buruzaemon Dec 27 '11 at 04:54
i tried rake build, rake install after updating it. when i did ls /Users/kpvarma/.rvm/gems/ruby-1.9.2-p290/gems/lorem-0.0.1.old/lib/lorem/, i could see only version.rb only . – Krishna Prasad Varma Dec 27 '11 at 06:24
http://mlomnicki.com/ruby/rubygems/2011/01/22/jeweler-vs-bundler.html in this blog peter says The major drawback of bundler is that you have to add all the files manualy to the *.gemspec file.. what does this means? – Krishna Prasad Varma Dec 27 '11 at 06:53

score 0 · Answer 2 · answered Dec 27 '11 at 10:26

0

Finally Cracked it.

lib = File.expand_path('../lib/', __FILE__)  
$:.unshift lib unless $:.include?(lib)

and giving the following inside

Gem::Specification.new do |s|

  ...
  s.files        = Dir.glob("{bin,lib}/**/*")
  ...

end

I got this hint from http://yehudakatz.com/2010/04/02/using-gemspecs-as-intended/

answered Dec 27 '11 at 10:26

Krishna Prasad Varma

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Does anybody knows why rake install doesnt copy all the ruby codes in lib folder but only those mentioned in s.files ? – Krishna Prasad Varma Dec 27 '11 at 10:27
1

Because that's the point of `s.files`: it is the list of things to include in the gem – Frederick Cheung Dec 27 '11 at 10:36
@KrishnaprasadVarma glad to hear you were able to resolve your issue. – buruzaemon Dec 27 '11 at 12:07

require not working while writing a gem

2 Answers2