I wrote an article here
http://www.ryankaskel.com/2009/09/09/model-development-tips-for-django-projects/
describing a useful case (or rather a useful set up for many potential
cases) using abstract base models that implements this:
# Abstract models used by various application specific models
from django.db import models
class CommonAbstractModel(models.Model):
added = models.DateTimeField(auto_now_add=True)
modified = models.DateTimeField(auto_now=True)
active = models.BooleanField(default=True)
class Meta:
abstract = True
The documentation still says these attributes are fine to use yet
respected Django develop James Bennett and Jacob (coBDFL) have both
stated comments to the effect that these attributes should never be
used (the former here:
http://www.b-list.org/weblog/2006/nov/02/django-tips-auto-populated-fields/,
and the latter here: http://code.djangoproject.com/ticket/1056 -- a 4
year old ticket last updated two years ago). In the code it says that
using these attributes is a hack. Another blogger wrote here that
http://benspaulding.com/weblog/2008/aug/02/auto_now_add-evil/ that
auto_now_add is evil and it links to James's blog.
Now the newforms-admin was added within a year of that last referenced
blog post and in that case the auto_now_add failed during his admin
hacking experience. Does newforms-admin change the status of
auto_now_add and auto_now as being evil? The code itself doesn't look
evil?
I'm trying to give advice to people but I can't even figure it out
myself (even though it works for me just fine -- so far?).
Developer in distress,
Ryan Kaskel
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