Environment variable Ruby interface.

environment.rb

module Environment

  class Grabber
    include Environment
  end

  module_function

  def get(key)
    ENV[key.to_s.upcase]
  end

  def method_missing(method, *args)
    environment_var = get(method)
    super(method, *args) if environment_var.to_s.empty?

    get(method)
  end
end

run.rb

# Traditional
ENV["SOME_ENV_VAR"] # => "test test 123"

# Module Function
Environment.some_env_var # => "test test 123"

# Instance
@env = Environment::Grabber.new
@env.some_env_var # => "test test 123"