Using conditions

Ruby Apps Ferret
1

Hello guys,

I’m pretty new to using AAF and am having a slight problem with using a
condition. I have the following code

@results = SupplierProduct.find_by_contents(params[:search], :conditions
=> [‘area_id = ?’, @area])

and it seems the condition isn’t being applied. Does anyone have any
pointers?

Cheers,

Alastair

2

On 8/26/06, Alastair M. [email protected] wrote:

Cheers,

Alastair

I’m not sure if the find_by_contents method has a :contents parameter
but even if it does, I’d personally do it just like this;

@results = SupplierProduct.find_by_contents(params[:search] + "

+area_id:#@area")

cheers,
Dave

3

On Sat, Aug 26, 2006 at 01:29:17AM +1000, David B. wrote:

pointers?

Cheers,

Alastair

I’m not sure if the find_by_contents method has a :contents parameter
but even if it does, I’d personally do it just like this;

@results = SupplierProduct.find_by_contents(params[:search] + "

+area_id:#@area")

that of course works if :area_id is an indexed field.

If area_id is not indexed, the :conditions option can be used to limit
the find call that retrieves the model instances via ActiveRecord. Note
that you might get less results than expected when using :conditions,
since AR filters records out that Ferret counted as a hit.

correct usage:

@results = SupplierProduct.find_by_contents(params[:search], {}, {
:conditions => [] })

the first hash is for ferret-related options (like :limit, :offset and
so on), the second for activeRecord options.

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

4

Jens K. wrote:

that of course works if :area_id is an indexed field.

If area_id is not indexed, the :conditions option can be used to limit
the find call that retrieves the model instances via ActiveRecord. Note
that you might get less results than expected when using :conditions,
since AR filters records out that Ferret counted as a hit.

correct usage:

@results = SupplierProduct.find_by_contents(params[:search], {}, {
:conditions => [] })

the first hash is for ferret-related options (like :limit, :offset and
so on), the second for activeRecord options.

Hi Jens and thanks for the help but I seem to be getting an error when I
use the following -

@results = MarketingProduct.find_by_contents(search_text, {},
:conditions => ‘live = “t”’)

I’m getting this error -

You have a nil object when you didn’t expect it!
You might have expected an instance of Array.
The error occured while evaluating nil.sort!

#{RAILS_ROOT}/vendor/plugins/acts_as_ferret/lib/acts_as_ferret.rb:286:in
find_by_contents' #{RAILS_ROOT}/app/controllers/marketing_controller.rb:21:inresults’

Any ideas what might be up?

Thanks,

Alastair

5

Hi!
On Tue, Sep 05, 2006 at 09:49:29PM +0200, Alastair M. wrote:

@results = MarketingProduct.find_by_contents(search_text, {},
:conditions => ‘live = “t”’)

that should read :conditions => [ “live=‘t’” ] . the clause gets shifted
from the array and ANDed with aaf’s own where clause, and any additional
parameters get added to the conditions array that is the issued to
ActiveRecord.

But that doesn’t seem to be your exact problem… What version of aaf do
you use ? From the line number that doesn’t seem to be latest trunk or
the last
version tagged stable ?

cheers,
Jens

Any ideas what might be up?
http://rubyforge.org/mailman/listinfo/ferret-talk
–
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