From: "Wayne E. Seguin" <wayneeseguin@...>
Date: 2007-07-11T00:13:53+09:00
Subject: Re: Getting Gem Version from Within a Gem

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On Jul 10, 2007, at 11:05 , Frew Schmidt wrote:
> I am the author of the application in question.  I tested your
> suggestion by doing a
>
>>> puts GemConstName::Version::STRING
>
> to see if it would have the variable defined by the gem system as
> defined in my gemspec, but it didn't work.  Is there something I  
> need to
> do to make this work?
>
> Thanks for your help!

Frew, why yes there is!!! Thank you for clarifying the question. Tis  
simple!

In lib/gem_name/version.rb place code like:
=================================
module GemName
   module Version
     # A method for comparing versions of required modules. It  
expects two
     # arrays as parameters, and returns true if the first is no more  
than the
     # second.
     def self.check(expected, actual) #:nodoc:
       good = false
       if actual[0] > expected[0]
         good = true
       elsif actual[0] == expected[0]
         if actual[1] > expected[1]
           good = true
         elsif actual[1] == expected[1] && actual[2] >= expected[2]
           good = true
         end
       end

       good
     end

     MAJOR = 0
     MINOR = 1
     TINY  = 2

     STRING = [MAJOR, MINOR, TINY].join(".")

     SSH_REQUIRED = [1,0,10]
     SFTP_REQUIRED = [1,1,0]
   end
end
=================================

Then require the version file in one of the main entry point files:

require "lib/gem_name/version"

Hope this helps! Gems are so much fun to develop.

--
Wayne E. Seguin
Sr. Systems Architect & Systems Admin
wayneseguin@gmail.com




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