Hyperion Reactor The Middle Child of History

class Photo < ActiveRecord::Base
  ...
 
  acts_as_taggable_on :keywords
 
  define_index do
    indexes :caption
    indexes keywords.name, :as => :keywords
  end
 
  ...
end

>> photo = Photo.create :user_id => 1, :caption => 'BMW M7', :keyword_list => 'BMW, Car'
>> photo.keywords
=> [#<Tag id: 1, name: "BMW">, #<Tag id: 3, name: "Car">]

# rake thinking_sphinx:index

>> Photo.search 'Car'
=> [#<Photo id: 100, caption: "BMW M7", user_id: 1, publication_state: "Unpublished", created_at: "2009-11-20 00:00:47", updated_at: "2009-11-20 00:00:47", image_file_name: nil, image_content_type: nil, image_file_size: nil, image_updated_at: nil>]

>> Photo.search('Car').first.keywords
=> [#<Tag id: 1, name: "BMW">, #<Tag id: 3, name: "Car">]

>> Photo.search :conditions => {:keywords => 'Car'}
=> [#<Photo id: 100, caption: "BMW M7", user_id: 1, publication_state: "Unpublished", created_at: "2009-11-20 00:00:47", updated_at: "2009-11-20 00:00:47", image_file_name: nil, image_content_type: nil, image_file_size: nil, image_updated_at: nil>]