One alternative in terms of dynamically adding an attribute to a model
instance (without having to have pre-defined any attr_... in the
class):

...
place = Place.new
place.name = place.name
place.id = place.id
place['address'] = external_api_place_data.address
...
From then on, for that instance, you can call place.address, and it
will show up in place.to_json (since to_json is generated from
place.attributes, which now has a k/v for address in attributes).

Jeff
On Oct 25, 8:16 am, Frederick Cheung wrote:
On 25 Oct 2011, at 16:00, "Lukas M." wrote:

hm.. no luck with that either. when i try to print out the places object
in the console (logger.debug @place.to_yaml),  "address" is missing.
For json at least you could override the as_json method to add the attributes you want.

Fred








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