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Asked: 2026-05-16T03:38:25+00:00

I’ve overrode the method find for ActiveRecord::Base and that went pretty well, now I

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I’ve overrode the method find for ActiveRecord::Base and that went pretty well, now I can customize it nicely.

def self.find(*args)
  # my custom actions 
  super(*args)
end

then

Album.find(1) #=> My custom result

But now I would like to override this:

Album.first.photos

and I’m not sure what method exactly I should override to get the job done…
I’m thinking of something specifically for associative queries, but I’m not sure 🙁

I need to act on ‘ActiveRecord::Base’ suggesting dynamic classes so I couldn’t create a method photos for that, but a method that will interact within all the models I try.

Thanks a lot

Update

For better explaining what I’m trying to achieve:

Is to create a pluggable ruby gem for use with rails and that gem can simply take you ID structure from the database and convert it on the fly to a shorten ID just like bit.ly system. but this is done on the fly with only declaring has_shortened :id to your model, and then all the interface and queries return for example DH3 instead of 12 for example, I’ve managed to get this working this the point I need to deal with associataions.

Follow the gem url http://github.com/ludicco/shortener so you can check it out, and feel free to come with ideas you might have to implement it if you think it’s a nice idea.

Cheers

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1 Answer

  1. Editorial Team

    Take a look at friendly_id plugin (http://github.com/norman/friendly_id http://norman.github.com/friendly_id/file.Guide.html), it does what you need: generate custom id alias for model. You can define custom method to generate slug.

    Leave id field in model

    For custom #find use :finder_sql option:

    class Album < ActiveRecord::Base
  has_friendly_id :short_id

  has_many :photos, :finder_sql => 'select * from photos where album_id="#{short_id}"'
end

>> Album.last.photos
select * from photos where album_id="t54"
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