Question

I have the following code: http://scrp.at/FB

# Error:
# bin/rpg:5:in `<main>': uninitialized constant RubyPasswordGenerator::Korben (NameError)

In file “bin/rpg”

#!/usr/bin/env ruby

require_relative "../lib/ruby_password_generator"

puts RubyPasswordGenerator::Korben.new

In “lib/ruby_password_generator.rb”

require_relative "ruby_password_generator/ruby_password_generator"
require_relative "ruby_password_generator/password_generator"
require_relative "ruby_password_generator/version"

# DEBUG
require "pp"

module RubyPasswordGenerator
end

require_relative "ruby_password_generator/algo/korben"

In “algo/korben.rb”

module RubyPasswordGenrator

  class Korben

    M_LOWERCAS_LETTERS    = ("a".."z").to_a
    M_UPPERCASE_LETTERS   = ("A".."Z").to_a
    M_NUMBERS             = (0..9).to_a
    M_SPECCIAL_CHARACTERS = "!@#()_-+=[]{}".split("")

    def initialize(length = 42)
      raise ArgumentError unless length.is_a?(Integer)
      raise ArgumentError unless length >= 3 && length <= 255

      @length = length
    end

    def generate
      password = ""
      (0...@length).each do
        char = (M_LOWERCAS_LETTERS + M_UPPERCASE_LETTERS + M_NUMBERS + M_SPECCIAL_CHARACTERS).shuffle.sample
        password << char
      end

      password
    end

  end
end

The file structure looks like:

# .
# ├── Gemfile
# ├── Gemfile.lock
# ├── LICENSE.markdown
# ├── NERD_tree_3
# ├── README.markdown
# ├── Rakefile
# ├── bin
# │   └── rpg
# ├── lib
# │   ├── ruby_password_generator
# │   │   ├── algo
# │   │   │   ├── korben.rb
# │   │   │   └── marvin.rb
# │   │   ├── helpers
# │   │   ├── password_generator.rb
# │   │   ├── ruby_password_generator.rb
# │   │   └── version.rb
# │   └── ruby_password_generator.rb
# ├── ruby_password_generator.gemspec
# └── spec
#     ├── algo
#     │   ├── korben_spec.rb
#     │   └── marvin_spec.rb
#     ├── password_generator_spec.rb
#     ├── ruby_password_generator_spec.rb
#     └── spec_helper.rb
#
# 7 directories, 19 files

I really don’t know why I am getting an uninitialized constant “NameError” error. I included the file properly using require_relative. I also tried autoload and require, but that didn’t solve anything. I am using ruby 1.9.2-p180.
If anybody knows what’s going on please explain me.

Answer 1

module RubyPasswordGenrator
  class Korben

You’re missing an e in the module name. Thus the Korben class exists in the RubyPasswordGenrator module not the RubyPasswordGenerator module and RubyPasswordGenerator::Korben does indeed not exist.