Contributors mailing list archives


Re: Problem with computed default values

Tecnativa. S. L., Pedro M. Baeza
- 11/04/2016 17:22:26
This exact question was made several weeks ago. Please check in the archives. In a nutshell, you have to execute a pre/post-init hook (the treatment will change depending on the order selected - before or after the installation).


2016-04-11 17:08 GMT+02:00 Daniel Reis <>:
Hello all,

I'm in need of some expert help.

I added a field to a model, to be used as a random unique identifier:
     token = fields.Char('Token', default=lambda s: str(uuid.uuid4()))

The problem is that, the already existing records all got the same exact uuid.
It seems that the lambda is evaluated once, before a mass update,  
instead of per record, as I expected.

Am I missing something?
Thanks for any help.

Daniel Reis

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