On Sun, 2008-01-06 at 19:16 +0100, Lars Heese wrote: > Hello, > > does anybody know how to implement a "Did you mean ...?" like Google > with act_as_ferret? > > I think this is a possible way:
Hi Lars, I did a similar thing in a project except the only things I wanted to suggest were pre-defined tag names in a table. So I just indexed that and did a fuzzy search on it. But anyway, you can enumerate all the terms in an index for a given field using the terms method of the IndexReader instance for the index: http://ferret.davebalmain.com/api/classes/Ferret/Index/TermEnum.html Then generate your other index from that. You can store the words directly in the Ferret index to avoid the unnecessary overhead of an SQL lookup. With a small list of terms, I'm not sure what the overhead of Ferret would be here though. Might be worth experimenting with some alternatives, like maybe generating an index yourself as an array directly in Ruby. See the Text library for Metaphone and Soundex algorithms: http://text.rubyforge.org/ Ferret will probably be best though tbh. John. -- http://www.brightbox.co.uk - UK Ruby on Rails hosting _______________________________________________ Ferret-talk mailing list [email protected] http://rubyforge.org/mailman/listinfo/ferret-talk
