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Message from discussion Indexing an instance method data
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Pat Allan  
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 More options Aug 6 2010, 2:44 am
From: Pat Allan <p...@freelancing-gods.com>
Date: Fri, 6 Aug 2010 16:44:25 +1000
Local: Fri, Aug 6 2010 2:44 am
Subject: Re: [ts] Re: Indexing an instance method data
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Hi Mike

I think it's before_validation... and you'd probably want something more like:

  before_validation :set_cached_rating

  def set_cached_rating
    self.cached_rating = rating
  end

This way the value is actually being stored in the database :)

--
Pat

On 06/08/2010, at 4:39 PM, Mike Disuza wrote:

> Hi,
> I am trying your solution like this
> My model is like this:-
> "
> before_validate :cache_rating
> define_index do
>    indexes :name,:sortable => true
>    indexes cached_rating, :as=>:property_rating
> end
> def cache_rating
>    self.rating
> end
> "
> Whenever I am trying to rebuild the indexing using "rake ts:rebuild",
> I am getting error "undefined method `before_validate' for #<Class:
> 0xb6cce9c4>"

> Can anyone help me out.

> Thanks,
> Mike

> On Aug 5, 11:38 am, James Healy <ji...@deefa.com> wrote:
>> Mike Disuza wrote:
>>> For rating I am using "acts_as_a_rateable" plugin which is giving a
>>> rating by using "obj.rating" method.
>>> I know that Sphinx does not do indexing of the method.

>>> Can anyone have any idea how to solve this?

>> I'm not familiar with the acts_as_a_rateable plugin, but you probably
>> have 2 options:

>> * find out if the plugin stores the rating in your database somewhere
>>   and add that column to your index

>> * if the rating is purely calculated in ruby, you will have to add a
>>   model callback that caches the value in your database. I've described
>>   this technique a few times on stack overflow, check out [1]

>> -- James Healy <ji...@deefa.com>  Thu, 05 Aug 2010 16:37:45 +1000

>> [1]http://stackoverflow.com/questions/3391048/including-rails-activereco...

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