Rails - Oct 2009 - passing model data to a plugin called within that model

I am making a plugin which extends ActiveRecord::Base


I have the plugin working in my models in other aspects. I would like
to pass in some data to the plugin, but I can''t get the data I would
like.

so if I have:


class Stuff < ActiveRecord::Base
    belongs_to :thing

   my_plugin :id => self.thing.other_id

end


it chokes on figuring out what to do with self.thing.other_id.

I checked, and self isn''t recognized at the point that I am calling
my_plugin

so if i do :

class Stuff < ActiveRecord::Base
    belongs_to :thing

   my_plugin :id => self.class.to_s

end


when I print out :id the class result comes back as blank.

Is there a way to do this?
The closest I can get is I can sort of do self.send(:thing).send
(:other_id)
It didn''t 100% work, but it was starting to get clunky, and I
didn''t
pursue the error I was creating.
There has to be something obvious I am missing.

thanks,
Charles

> class Stuff < ActiveRecord::Base
>     belongs_to :thing
> 
>    my_plugin :id => self.thing.other_id
> 
> end
This is impossible.  self in the above snippet is the Stuff class.  I''m
assuming you want that to use a instance of Stuff at the time some 
magical method is called.  You have to use a block

class Stuff < ActiveRecord::Base
  my_plugin do |stuff|
    {:id => stuff.thing.other_id}
  end
end

The my_plugin method has to know how to store that block so that the 
instance can call it, passing itself as the first argument.
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