Rails - Nov 2007 - Automatic marshalling with DB access

I have an item which has a hash for one of its fields.  When i store it
in the db, i want to do a Marshal.dump of the hash, and similarly, do a
Marshal.load to turn the saved blob back into a hash again.

Is there a way to easily write this into the model, so that it happens
automatically when saving and loading a record?

thanks
max
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On Nov 6, 2007 9:01 AM, Max Williams
<rails-mailing-list-ARtvInVfO7ksV2N9l4h3zg@public.gmane.org>
wrote:
>
> I have an item which has a hash for one of its fields.  When i store it
> in the db, i want to do a Marshal.dump of the hash, and similarly, do a
> Marshal.load to turn the saved blob back into a hash again.
>
> Is there a way to easily write this into the model, so that it happens
> automatically when saving and loading a record?
>
> thanks
> max

Check out ActiveRecord::Base.serialize

http://api.rubyonrails.org/classes/ActiveRecord/Base.html#M001020

class Foo < ActiveRecord::Base
  serialize :bar
end

HTH,
Michael Guterl

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Michael Guterl wrote:
> Check out ActiveRecord::Base.serialize
> 
> http://api.rubyonrails.org/classes/ActiveRecord/Base.html#M001020
> 
> class Foo < ActiveRecord::Base
>   serialize :bar
> end
> 
> HTH,
> Michael Guterl
Yeah, i just discovered that as well, it''s exactly what i was after, 
cheers!
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