Cannot include module in model

Question

I\'m using

Ruby version              1.8.7
Rails version             3.0.3

I have a method called alive in every model of my rails app:

Answer 1

Just put this line in application.rb file

config.autoload_paths += Dir["#{config.root}/lib/**/"]

Edited:

This line is working fine for me. I want to suggest one more thing, ruby 1.8.x is not compatible with rails 3.x. So just update your ruby for version 1.9.2

Following is my POC

In lib folder:
lib/test_lib.rb

module TestLib
 def print_sm
   puts "Hello World in Lib Directory"
 end
end


In model file:

include TestLib
def test_method
  print_sm
end

And In application.rb

config.autoload_paths += Dir["#{config.root}/lib/**/"]


Now you can call test_method like this in controller:

ModelName.new.test_method #####Hello World in Lib Directory