Mongoid Search ============ Mongoid Search is a simple full text search implementation for Mongoid ORM. Installation -------- In your Gemfile: gem 'mongoid_search' Then: bundle install Examples -------- class Product include Mongoid::Document include Mongoid::Search field :brand field :name references_many :tags refereced_in :category search_in :brand, :name, :tags => :name, :category => :name end class Tag include Mongoid::Document field :name referenced_in :product end class Category include Mongoid::Document field :name references_many :products end Now when you save a product, you get a _keywords field automatically: p = Product.new :brand => "Apple", :name => "iPhone" p.tags << Tag.new(:name => "Amazing") p.tags << Tag.new(:name => "Awesome") p.tags << Tag.new(:name => "Superb") p.save => true p._keywords Now you can run search, which will look in the _keywords field and return all matching results: Product.search("apple iphone").size => 1 Note that the search is case insensitive, and accept partial searching too: Product.search("ipho").size => 1 Assuming you have a category with multiple products you can now use the following code to search for 'iphone' in products cheaper than $499 @category.products.where(:price.lt => 499).asc(:price).csearch('iphone') In this case we have to use csearch, an alias for search, because since v2.0.0 Mongoid defines it's own Criteria.search method. Options ------- match: _:any_ - match any occurrence _:all_ - match all ocurrences Default is _:any_. search_in :brand, :name, { :tags => :name }, { :match => :any } Product.search("apple motorola").size => 1 search_in :brand, :name, { :tags => :name }, { :match => :all } Product.search("apple motorola").size => 0 allow_empty_search: _true_ - match any occurrence _false_ - match all ocurrences Default is _false_. search_in :brand, :name, { :tags => :name }, { :allow_empty_search => true } Product.search("").size => 1 ignore_list: Pass in an ignore list location. Keywords in that list will be ignored. search_in :brand, :name, { :tags => :name }, { :ignore_list => Rails.root.join("config", "ignorelist.yml") } The list should look like: ignorelist: a, an, to, from, as You can include how many keywords you like. TODO ---- * Strip html with sanitize (https://github.com/rgrove/sanitize) * Rewrite and test relevant search * Move all configurations to a configuration file. Maybe /config/mongoid_search.yml.