Bruno - yes, your solution is even better as it avoids a database lookup. Thank you!
On Oct 12, 4:06 pm, bruno desthuilliers <[EMAIL PROTECTED]> wrote: > On 11 oct, 02:59, zhango <[EMAIL PROTECTED]> wrote: > > > I'm overriding a model's save() method, and I want to detect changes > > in values for some of the model's fields (i.e. differences between the > > unsaved instance's values for some fields, and the values for those > > same fields currently in the database and about to be overwritten). > > Is it possible to do this, and if so, how? > > class Yadda(models.Model): > blah = models.CharField(max_length=32) > > def __unicode__(self): > return u"%s" % self.blah > > def __init__(self, *args, **kw): > print "yadda __init__", args, kw > super(Yadda, self).__init__(*args, **kw) > self._old_blah = self.blah > > def save(self, **kw): > print "yadda save" > if self.blah != self._old_blah: > print "blah changed - was : %s - now : %s" % > (self._old_blah, self.blah) > super(Yadda, self).save(**kw) --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
