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Very simple Null Object pattern implementation. Avdi Grimm has a blog post that gives an excellent introduction to the pattern in Ruby:


Add this line to your application's Gemfile:

gem 'nil_object'

And then execute:

$ bundle

Or install it yourself as:

$ gem install nil_object


Wherever you want a NilObject simply instantiate one with, conversion methods (such as to_s, to_i, etc.) work like they would on nil, method_missing will return self.

You can extend NilObject to create your own variations of NilObjects as you please.


  1. Fork it
  2. Create your feature branch (git checkout -b my-new-feature)
  3. Commit your changes (git commit -am 'Add some feature')
  4. Push to the branch (git push origin my-new-feature)
  5. Create new Pull Request