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When Ultrasphinx is used with polymorphic associations…


Lets first consider simple has_many and belongs_to associations as:

class Article < ActiveRecord::Base
has_many :comments
end

class Comment < ActiveRecord::Base
belongs_to :article
end

Now if you wish to index the title of associated article with comment for searching, you just need to add ” is_indexed :fields => :body, :include => [{ :association_name => 'article', :field => 'title', :as=> [...]