If you decide to go the factory route, you could always make the
factory a class method.
  http://docs.python.org/library/functions.html#classmethod

  class YourModel(db.model):
    @classmethod
    def create_new(cls, **kwargs):
      # check args... raise exception / return None on error
      return cls(**kwargs)


  new_model = YourModel.create_new(this='that', some='thing')




On Wed, Aug 24, 2011 at 19:37, Santiago Basulto
<[email protected]> wrote:
> Yes, i think that's the best way to do it.
>
> Thank you both.
>
> El día 24 de agosto de 2011 20:29, sebastián serrano
> <[email protected]> escribió:
>> Hi
>>   I think this article from the app engine blog has a more clear description
>> of custom properties for this usage:
>>   http://googleappengine.blogspot.com/2009/07/writing-custom-property-classes.html
>>
>> Cheers, Sebastian
>> www.devsar.com
>>
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