Ferret talk - Oct 2006 - conditional boost? friends to come up at top of search...

Hey guys, im trying to get my friends to come up at the top of the act 
as ferret search. I would query the whole result set first, then move my 
friends to the top, but the thing is, Im paginating my results and use 
the offset and limit parameters in the multi_search() function.

Anyone know how to do this?
Thanks in advance...

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On Tue, Oct 31, 2006 at 10:02:50AM +0100, Eric Gross
wrote:
> Hey guys, im trying to get my friends to come up at the top of the act 
> as ferret search. I would query the whole result set first, then move my 
> friends to the top, but the thing is, Im paginating my results and use 
> the offset and limit parameters in the multi_search() function.
> 
> Anyone know how to do this?
We''d need some more info on how you store your friend-of-relationship,
and
how your index looks like (i.e. what fields does it contain).

cheers,
Jens

-- 
webit! Gesellschaft f?r neue Medien mbH          www.webit.de
Dipl.-Wirtschaftsingenieur Jens Kr?mer       kraemer at webit.de
Schnorrstra?e 76                         Tel +49 351 46766  0
D-01069 Dresden                          Fax +49 351 46766 66

ok for the user, for now i am only indexing the users full name, i have

class User < ActiveRecord::Base
   acts_as_ferret :store_class_name => true, :fields => { :full_name =>
{ :boost
        => 3 }}
   has_and_belongs_to_many :friends,:class_name=>"User",
:join_table=>
       "friends_users",:association_foreign_key =>
"friend_id",
      :after_add => :become_friend_to_friend,:after_remove=>
      :remove_user_as_friend

so thats pretty much all there is there. The thing is Im calling the
search as a multisearch - User.multisearch(query,[ Book ], (with :limit
and :offset)).




Jens Kraemer wrote:
> On Tue, Oct 31, 2006 at 10:02:50AM +0100, Eric Gross wrote:
>> Hey guys, im trying to get my friends to come up at the top of the act 
>> as ferret search. I would query the whole result set first, then move
my
>> friends to the top, but the thing is, Im paginating my results and use 
>> the offset and limit parameters in the multi_search() function.
>> 
>> Anyone know how to do this?
> 
> We''d need some more info on how you store your
friend-of-relationship,
> and
> how your index looks like (i.e. what fields does it contain).
> 
> cheers,
> Jens
> 
> --
> webit! Gesellschaft f?r neue Medien mbH          www.webit.de
> Dipl.-Wirtschaftsingenieur Jens Kr?mer       kraemer at webit.de
> Schnorrstra?e 76                         Tel +49 351 46766  0
> D-01069 Dresden                          Fax +49 351 46766 66

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Hi i have a similar thing in my search results. I have sponsored
listings appearing above other results. This is done with a simple
sponsored boolean flag and a sort field that orders by sponsored and
then score.
regards
caspar

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hey caspar, im having trouble understanding what you mean. Could you 
show me some of your code? I dont know what you mean by sponsored 
boolean flag and a sort field.

Any examples would be highly appreciatied.

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Okay firstly the sponsored listings are what we call the paid for 
premier style of listing in our site. In the listings db table there are 
a few fields that describe the sponsored feature. Ferret is used to 
index one of them which is a boolean called sponsored which simple 
defines a listing as being sponsored. Ferret doesn''t know (as far as
I''m
aware..) how to compare booleans so you need this declaration somewhere 
in your model. Which tells ferret how to handle boolean comparrisons.

def false.<=>(o)  o ? -1 : 0 end
def true.<=>(o)  !o ? 1 : 0 end

Then it''s just a case of defining your sort fields and then using them 
in your ferret search like so.

sort_fields = []
sort_fields << Ferret::Search::SortField.new(:sponsored, :reverse => 
:true)
sort_fields << Ferret::Search::SortField::SCORE


results = VoObject.find_by_contents(query,:sort 
=>sort_fields,:offset=>page,:limit => RESULTS_PER_PAGE)

I''m a rank amateur when it comes to ruby/rails/ferret so please
don''t
take this as the right/best way to do it, but it works for me.
Hope this helps.
Regards
Caspar

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