Ferret talk - Feb 2007 - Automatically Indexing Associated Models

PROBLEM
I have two models, Blog and BlogComment. When a blog is initially
created, it has no comments. Upon creation, the title and body are
automatically added to the ferret index and directly searchable.
However, when a comment is added to a blog, that comment does not get
added to the index and is therefore not ferretable. The desired behavior
is that when a comment is added to a blog, that the comment be
ferretable.

CURRENT SETUP
Blog (id, title, body, user_id)
BlogComment (id, blog_id, comment)

class Blog < ActiveRecord::Base
  has_many :blog_comments, :dependent => :destroy
  acts_as_ferret :additional_fields => [:blog_comments]

  def blog_comments
    self.blog_comments.collect {|comment| comment.body }
  end

end

class BlogComment < ActiveRecord::Base
  belongs_to :blog
end

CONTROLLER
[..]
if @blog.blog_comments << comment
   do_something
else
   do_something
end

Can someone recommend a good approach to automatically updating the
index when a comment is added?

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On Thu, Feb 01, 2007 at 02:42:38AM +0100, Mark wrote:
> PROBLEM
> I have two models, Blog and BlogComment. When a blog is initially
> created, it has no comments. Upon creation, the title and body are
> automatically added to the ferret index and directly searchable.
> However, when a comment is added to a blog, that comment does not get
> added to the index and is therefore not ferretable. The desired behavior
> is that when a comment is added to a blog, that the comment be
> ferretable.
> 
> CURRENT SETUP
> Blog (id, title, body, user_id)
> BlogComment (id, blog_id, comment)
> 
> class Blog < ActiveRecord::Base
>   has_many :blog_comments, :dependent => :destroy
>   acts_as_ferret :additional_fields => [:blog_comments]
> 
>   def blog_comments
>     self.blog_comments.collect {|comment| comment.body }
>   end
> 
> end
> 
> class BlogComment < ActiveRecord::Base
>   belongs_to :blog
> end
> 
> CONTROLLER
> [..]
> if @blog.blog_comments << comment
>    do_something
adding
     @blog.ferret_update
here should do the trick.
> else
>    do_something
> end
> 
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:
>> if @blog.blog_comments << comment
>>    do_something
> 
> adding
>      @blog.ferret_update
> here should do the trick.
> 
>> else
>>    do_something
>> end
Jens, that''s one option I had considered. What do you think about 
creating an onsave event in all the models that use acts_as_ferret like 
so..

after_save :update_ferret_index

def update_ferret_index
    self.blog.ferret_update if self.blog
end

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

On Thu, Feb 01, 2007 at 02:54:41PM +0100, Mark wrote:
> Jens Kraemer wrote:
> 
> >> if @blog.blog_comments << comment
> >>    do_something
> > 
> > adding
> >      @blog.ferret_update
> > here should do the trick.
> > 
> >> else
> >>    do_something
> >> end
> 
> Jens, that''s one option I had considered. What do you think about 
> creating an onsave event in all the models that use acts_as_ferret like 
> so..
> 
> after_save :update_ferret_index
> 
> def update_ferret_index
>     self.blog.ferret_update if self.blog
> end
yeah, this should work, too. Even prettier from an architectural point
of view :-)

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 Thu, Feb 01, 2007 at 02:54:41PM +0100, Mark wrote:
>> >>    do_something
>> end
> yeah, this should work, too. Even prettier from an architectural point
> of view :-)
> 
> 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
Hi. i have the same problem, but my_instance.ferret_update doesn''t
index
associated model fields on the console. Doesn''t ferret_update get
called
after_save anyway?

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