Rails - Sep 2005 - Extending ActiveRecord::Base

Hey everyone,

I''m interested in extending ActiveRecord::Base. I have a special  
"easier" find function that I want to include in all classes.

How can I include this in all classes?

Can I just create a model object that does something like this:

class ExtendedAR < ActiveRecord::Base
     def self.special_find
         ...
     end
end

and then all my other classes inherit from this class?

That way, they inherit the functionality?

Thanks in advance, as always,
Julian.

On Sunday 11 September 2005 15:11, Julian Leviston wrote:
> I''m interested in extending ActiveRecord::Base. I have a special
> "easier" find function that I want to include in all classes.
Here''s how I do it

module MyActiveRecordExtensions
  def self.included(base)
    base.class_eval do
      base.extend(ClassMethods)
    end
  end

  module ClassMethods
    def special_find
      ...
    end
  end
end

Then wire things together somewhere

ActiveRecord::Base.class_eval do
  include MyActiveRecordExtensions
end


Michael

-- 
Michael Schuerig                         Those people who smile a lot
mailto:michael-q5aiKMLteq4b1SvskN2V4Q@public.gmane.org                          
Watch the eyes
http://www.schuerig.de/michael/    --Ani DiFranco, Outta Me, Onto You

Where do you put all that?

It doesn''t really make sense to me. Probably because I don''t
know
about modules yet. I''ll just look at it a bit longer tho.

Julian.

On 12/09/2005, at 12:34 AM, Michael Schuerig wrote:
> On Sunday 11 September 2005 15:11, Julian Leviston wrote:
>
>
>> I''m interested in extending ActiveRecord::Base. I have a
special
>> "easier" find function that I want to include in all classes.
>>
>
> Here''s how I do it
>
> module MyActiveRecordExtensions
>   def self.included(base)
>     base.class_eval do
>       base.extend(ClassMethods)
>     end
>   end
>
>   module ClassMethods
>     def special_find
>       ...
>     end
>   end
> end
>
> Then wire things together somewhere
>
> ActiveRecord::Base.class_eval do
>   include MyActiveRecordExtensions
> end
>
>
> Michael
>
> -- 
> Michael Schuerig                         Those people who smile a lot
> mailto:michael-q5aiKMLteq4b1SvskN2V4Q@public.gmane.org                     
Watch the eyes
> http://www.schuerig.de/michael/    --Ani DiFranco, Outta Me, Onto You
> _______________________________________________
> Rails mailing list
> Rails-1W37MKcQCpIf0INCOvqR/iCwEArCW2h5@public.gmane.org
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>

On Monday 12 September 2005 04:09, Julian Leviston
wrote:
> Where do you put all that?
>
> It doesn''t really make sense to me. Probably because I
don''t know
> about modules yet. I''ll just look at it a bit longer tho.
See below
> > Here''s how I do it
> >
> > module MyActiveRecordExtensions
> >   def self.included(base)
> >     base.class_eval do
> >       base.extend(ClassMethods)
> >     end
> >   end
> >
> >   module ClassMethods
> >     def special_find
> >       ...
> >     end
> >   end
> > end
lib/my_active_record_extensions.rb would be a suitable place
> > Then wire things together somewhere
> >
> > ActiveRecord::Base.class_eval do
> >   include MyActiveRecordExtensions
> > end
This could go into config/environment.rb or into the same file as the 
above.

Michael

-- 
Michael Schuerig                                 Life is what happens 
mailto:michael-q5aiKMLteq4b1SvskN2V4Q@public.gmane.org                  While
you''re making plans
http://www.schuerig.de/michael/    --Kevin Gilbert, A Long Day''s Life