Ferret talk - May 2006 - how to index the result of any instance method

Hi,

One of the AAF features is to be able to index results of methods, but I 
haven''t seen anywhere how to do this.  I have a method that returns the
full text of a file and I''d like for this to be indexed. Can anyone out
there help me out on this one?

Tom

-- 
Posted via http://www.ruby-forum.com/.

Hi, Tom,

haven''t used this myself but if I understand
http://projects.jkraemer.net/acts_as_ferret/rdoc/classes/FerretMixin/Acts/ARFerret/ClassMethods.html#M000005correctly
you are able to add symbols of your instance methods to the fields
of the options hash of acts_as_ferret:

"fields:names all fields to include in the index. If not given,

  all attributes of the class will be indexed. You may also give
  symbols pointing to instance methods of your model here, i.e.
  to retrieve and index data from a related model.
"

Regards
Jan



On 5/22/06, Tom <tom.oristian at gmail.com> wrote:
>
> Hi,
>
> One of the AAF features is to be able to index results of methods, but I
> haven''t seen anywhere how to do this.  I have a method that
returns the
> full text of a file and I''d like for this to be indexed. Can
anyone out
> there help me out on this one?
>
> Tom
>
> --
> Posted via http://www.ruby-forum.com/.
> _______________________________________________
> Ferret-talk mailing list
> Ferret-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/ferret-talk
>
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Hi!

On Mon, May 22, 2006 at 09:37:54AM +0200, Jan Prill
wrote:
> Hi, Tom,
> 
> haven''t used this myself but if I understand
>
http://projects.jkraemer.net/acts_as_ferret/rdoc/classes/FerretMixin/Acts/ARFerret/ClassMethods.html#M000005correctly
> you are able to add symbols of your instance methods to the fields
> of the options hash of acts_as_ferret:
> 
> "fields:names all fields to include in the index. If not given,
> 
>  all attributes of the class will be indexed. You may also give
>  symbols pointing to instance methods of your model here, i.e.
>  to retrieve and index data from a related model.
> "
right, just use the method name as a symbol in the fields list:

class MyModel < ActiveRecord::Base
  acts_as_ferret :fields => [ :full_text, ''title'' ]
  def full_text
    # return content to be indexed here
  end
end

where title is a normal database backed attribute.

Cheers,
Jens

> On 5/22/06, Tom <tom.oristian at gmail.com> wrote:
> >
> >Hi,
> >
> >One of the AAF features is to be able to index results of methods, but
I
> >haven''t seen anywhere how to do this.  I have a method that
returns the
> >full text of a file and I''d like for this to be indexed. Can
anyone out
> >there help me out on this one?
> >
> >Tom
> >
> >--
> >Posted via http://www.ruby-forum.com/.
> >_______________________________________________
> >Ferret-talk mailing list
> >Ferret-talk at rubyforge.org
> >http://rubyforge.org/mailman/listinfo/ferret-talk
> >
> _______________________________________________
> Ferret-talk mailing list
> Ferret-talk at rubyforge.org
> http://rubyforge.org/mailman/listinfo/ferret-talk
-- 
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

Jens Kraemer wrote:
> Hi!
> 
> On Mon, May 22, 2006 at 09:37:54AM +0200, Jan Prill wrote:
>>  symbols pointing to instance methods of your model here, i.e.
>>  to retrieve and index data from a related model.
>> "
> 
> right, just use the method name as a symbol in the fields list:
> 
> class MyModel < ActiveRecord::Base
>   acts_as_ferret :fields => [ :full_text, ''title'' ]
>   def full_text
>     # return content to be indexed here
>   end
> end
> 
> where title is a normal database backed attribute.
> 
> Cheers,
> Jens
> 
> 
>> >
>> >--
>> >Posted via http://www.ruby-forum.com/.
>> >_______________________________________________
>> >Ferret-talk mailing list
>> >Ferret-talk at rubyforge.org
>> >http://rubyforge.org/mailman/listinfo/ferret-talk
>> >
> 
>> _______________________________________________
>> Ferret-talk mailing list
>> Ferret-talk at rubyforge.org
>> http://rubyforge.org/mailman/listinfo/ferret-talk
> 
> --
> 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

Thanks Jens,

Now I''ve got the approach figured out, but I seem to be having problems
yet.  It seems that my full_text method is not actually being indexed.
In fact, I''ve placed a breakpoint inside the method and it seems that
it''s never even being called.  Meanwhile, Ferret still manages to
update
index with every new instance of MyModel, but without the full_text
value.  I also placed a breakpoint in
vendor/plugins/acts_as_ferret/rebuild_index.rb and it appears that IT is
never called when a new model instance is created.  Any thoughts?

Really appreciate your help,

Tom

-- 
Posted via http://www.ruby-forum.com/.

On Tue, May 23, 2006 at 08:42:10AM +0200, Tom wrote:
> Jens Kraemer wrote:
> > Hi!
> > 
> > On Mon, May 22, 2006 at 09:37:54AM +0200, Jan Prill wrote:
> >>  symbols pointing to instance methods of your model here, i.e.
> >>  to retrieve and index data from a related model.
> >> "
> > 
> > right, just use the method name as a symbol in the fields list:
> > 
> > class MyModel < ActiveRecord::Base
> >   acts_as_ferret :fields => [ :full_text, ''title''
]
> >   def full_text
> >     # return content to be indexed here
> >   end
> > end
> > 
> > where title is a normal database backed attribute.
> > 
> 
> Thanks Jens,
> 
> Now I''ve got the approach figured out, but I seem to be having
problems
> yet.  It seems that my full_text method is not actually being indexed.
> In fact, I''ve placed a breakpoint inside the method and it seems
that
> it''s never even being called.  Meanwhile, Ferret still manages to
update
> index with every new instance of MyModel, but without the full_text
> value.  I also placed a breakpoint in
> vendor/plugins/acts_as_ferret/rebuild_index.rb and it appears that IT is
> never called when a new model instance is created.  Any thoughts?
What version of acts_as_ferret do you use ? Could you try to upgrade
from svn ? rebuild_index.rb has been removed some time ago as it is
obsolete.

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

Jens Kraemer wrote:
> On Tue, May 23, 2006 at 08:42:10AM +0200, Tom wrote:
>> > class MyModel < ActiveRecord::Base
>> 
>> Now I''ve got the approach figured out, but I seem to be having
problems
>> yet.  It seems that my full_text method is not actually being indexed.
>> In fact, I''ve placed a breakpoint inside the method and it
seems that
>> it''s never even being called.  Meanwhile, Ferret still manages
to update
>> index with every new instance of MyModel, but without the full_text
>> value.  I also placed a breakpoint in
>> vendor/plugins/acts_as_ferret/rebuild_index.rb and it appears that IT
is
>> never called when a new model instance is created.  Any thoughts?
> 
> What version of acts_as_ferret do you use ? Could you try to upgrade
> from svn ? rebuild_index.rb has been removed some time ago as it is
> obsolete.
> 
> 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

Okay, thanks. I''ve got it working now for simple text files.  Can 
anybody share any experience/opinion they have on using Ruby to process 
and index/search Microsoft documents and PDFs ???  Thanks for any help.


-- 
Posted via http://www.ruby-forum.com/.

On Thu, Jun 01, 2006 at 09:35:18AM +0200, Tom On wrote:
> 
> Okay, thanks. I''ve got it working now for simple text files.  Can 
> anybody share any experience/opinion they have on using Ruby to process 
> and index/search Microsoft documents and PDFs ???  Thanks for any help.
In RDig I use the wvText and pdftotext to extract textual content from word
and pdf documents. Imho there is no Ruby lib yet to do this.

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

On 6/1/06, Jens Kraemer <kraemer at webit.de>
wrote:
> On Thu, Jun 01, 2006 at 09:35:18AM +0200, Tom On wrote:
> >
> > Okay, thanks. I''ve got it working now for simple text files. 
Can
> > anybody share any experience/opinion they have on using Ruby to
process
> > and index/search Microsoft documents and PDFs ???  Thanks for any
help.
>
> In RDig I use the wvText and pdftotext to extract textual content from word
> and pdf documents. Imho there is no Ruby lib yet to do this.
I second that. I''ve tried the Ruby pdf reader alternitives on RAA
without much luck. If anyone knows a good pdf reading opensource C
library I''d be happy to write some bindings. But I think wvText and
pdftotext are your best options right now.