Models that use this plugin do not persist empty Arrays, Hashes or Sets. Nil values are also excluded as per standard MM behaviour.

• Ruby 1.9
• MongoMapper 0.10.1 or greater

Add this to your Gemfile if using Bundler: gem 'mm_no_empties'

Or install the gem from the command line: gem install mm_no_empties

Use the MongoMapper plugin method to add MmNoEmpties to your model, for example:

class Group
  include MongoMapper::Document
  plugin  MmNoEmpties
  
  many :people, :class_name => 'Person'
  
  key  :names,  Array
  key  :counts, Hash
  key  :tags,   Set
end

Copyright (c) 2011 PeepAll Ltd, released under the MIT license