A simple Rails 3 recommendations engine for Mongoid models.
This is a fork of coletivo, if you need ActiveRecord support, check coletivo.
sudo gem install coletivo-mongoid
or in your rails app, add following line to Gemfile:
At your Rails model that represents a person (can be an User, Member, or something like that):
class User include Mongoid::Document include Coletivo::Models::Person include Coletivo::Models::Recommendable has_own_preferences # ... end
At your models that represent something that can be recommend (such as Movie):
class Movie include Mongoid::Document include Coletivo::Models::Recommendable # ... end
So, a person can rate things:
current_user = User.create(:name => 'Diogenes') movie = Movie.create(:name => 'The Tourist', :year => 2010) current_user.rate!(movie, 4.5)
And after a lot of ratings… recommendations:
Movie.find_recommendations_for(current_user) # => movies and more movies...
By default, the similarity strategy used is Euclidean Distance, but you can change that passing the strategy option:
Movie.find_recommendations_for(current_user, :strategy => :pearson)
Contributing to coletivo-mongoid
Check out the latest master to make sure the feature hasn't been implemented or the bug hasn't been fixed yet
Check out the issue tracker to make sure someone already hasn't requested it and/or contributed it
Fork the project
Start a feature/bugfix branch
Commit and push until you are happy with your contribution
Make sure to add tests for it. This is important so I don't break it in a future version unintentionally.
Please try not to mess with the Rakefile, version, or history. If you want to have your own version, or is otherwise necessary, that is fine, but please isolate to its own commit so I can cherry-pick around it.
Copyright © 2011 Diógenes Falcão. Copyright © 2012 Francis Chong.
See LICENSE.txt for further details.