On 10/29/07, dimitri pater <[EMAIL PROTECTED]> wrote:
>
> Hi,
>
> I want to prepopulate a database with the weeknumber (as a separate
> filed) from a given date. This is what the models looks like:
> class Item(models.model):
> day=models.DateField()
> weekno=models.SmallIntegerField(prepopulate_from(??day??,)
>
> I know that datetime.date.isocalender(day)[1] returns the weeknumber,
> but I have no idea how to put this in the model.
> What I want to achieve in the end is filtering objects from the db
> (obj=item.objects.filter(weekno=current_week))
>
> Your help is appreciated,
> Dimitri
Override your model's save method [1]
def save(self, **kwargs):
self.weekno = datetime.date.isocalender(self.day)[1]
super(Item, self).save(**kwargs)
Jonathan.
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