On Tue, Feb 06, 2007 at 11:22:39PM +0100, Mischa Berger wrote:
> Hi everybody,
>
> After staring at the a_a_f API for quite sometime now, I decided it's
> time to ask...
>
> Which method should I use to get content from the index without using
> highlight? Consider the following controller action:
>
> def preview
> if params[:search].blank? # normal case
> @text = @myfile. # which method do I use here to get the :text from
> the index???
> else # if we come from the search results page
> @text = @myfile.highlight(params[:search], { :field => :text,
> :excerpt_length => :all, :pre_tag => '[highlight]', :post_tag =>
> '[/highlight]' })
> end
> end
>
> I didn't store my text in the database, only in the index. When I'm
> coming from a search I use the highlight method, so the term I searched
> for gets highlighted, but how do I get the text from the index in a
> 'normal case'. The highlight method feels inappropriate, because I don't
> want to highlight anything. I don't see what other method to use.
that's because there is currently no aaf way to do this.
You can however get a handle to the Ferret::Index instance by calling
YourModel.ferret_index (or YourModel.aaf_index.ferret_index if you're
using the latest aaf trunk). Now you can query this index instance for
your primary key with something in the lines of "id:#{self.id}", and then
retrieve field values via the standard ferret api.
Note that this won't work with a remote index, since the index in this
case is not necessarily on the same machine and therefore cannot be
accessed via Ferret's own API.
I already started thinking about a way to integrate this into the API,
maybe via an option to find_by_contents that allows to specify the
fields you want to fetch directly from the index. That could then be
combined with lazy-loading of the 'real' record from DB for more speed
when it comes to live-searches and the like.
Jens
--
webit! Gesellschaft für neue Medien mbH www.webit.de
Dipl.-Wirtschaftsingenieur Jens Krämer [EMAIL PROTECTED]
Schnorrstraße 76 Tel +49 351 46766 0
D-01069 Dresden Fax +49 351 46766 66
_______________________________________________
Ferret-talk mailing list
[email protected]
http://rubyforge.org/mailman/listinfo/ferret-talk
