config.autoload_paths += %W(#{Rails.root}/app/workers
                                #{Rails.root}/lib/validators
                                #{Rails.root}/lib/content_items
                                #{Rails.root}/lib/mongoid
                                #{Rails.root}/lib/booher_modules
                              )

## tree
.
├── booher_modules
│   └── voting_helpers.rb
├── campus_authorization.rb
├── configuration.rb
├── content_items
│   ├── content_item.rb
│   └── cover_picture.rb
├── development_mail_interceptor.rb
├── mongoid
│   └── counter_cache.rb
├── paperclip_processors
│   └── cropper.rb
├── special_characters.rb
├── string_extensions.rb
├── tasks
│   ├── assets.thor
│   ├── cba.rake
│   ├── cucumber.rake
│   ├── data.rake
│   ├── delayed_jobs.rake
│   ├── deploy.thor
│   ├── set_data.rake
│   └── test.thor
├── translator
│   └── translator.rb
└── validators
    └── email_validator.rb

## model

class Vote
  include Mongoid::Document
  include Mongoid::Timestamps
  include Mongoid::CounterCache

  field :value, :type => Symbol # can be :aye, :nay, :abstain, :present

  counter_cache :name => 'polco_group', :field => 'vote_count'

## module


module Mongoid
  module CounterCache
    extend ActiveSupport::Concern

    module ClassMethods
      def counter_cache(options)
        name = options[:name]
        counter_field = options[:field]

        after_create do |document|
          relation = document.send(name)
          relation.collection.update(relation._selector, {'$inc' => {counter_field.to_s => 1}})
        end