Karen,

I'm aware that my 30-days-ago version of the query is current time/
date specific. Good catch :-)

Thanks for the solution. I also found this one:
today = datetime.datetime.today()
Document.objects.filter(created_on__month=today.month,
created_on__day=today.day, created_on__year=today.year)

Thanks again.


On Oct 12, 5:00 pm, Karen Tracey <kmtra...@gmail.com> wrote:
> On Mon, Oct 12, 2009 at 5:07 PM, aa56280 <aa56...@gmail.com> wrote:
>
> > I have a DateTimeField called "created_on" on a model called
> > "Documents". It serves as a timestamp for when the record was added.
>
> > I'm trying to write a query that will return all Documents created_on
> > a particular date, say today. I can make it work if I look for a
> > record within a range of dates...
>
> > <code>
> > today = datetime.datetime.today()
> > thirty_days_ago = today - datetime.timedelta(days=30)
> > Document.objects.filter(created_on__range=(thirty_days_ago, today))
> > </code>
>
> > But now, I need to find records that were created on a particular
> > date, like, today.
>
> > How do I do that?
>
> today_end = datetime.datetime.combine(datetime.date.today(),
> datetime.time.max)
> today_start = datetime.datetime.combine(datetime.date.today(),
> datetime.time.min)
> Document.objects.filter(created_on__range=(today_start, today_end))
>
> You realize your 30-days-ago version of the query returns values that depend
> on the current time as well as the current date when the query is run? This
> may be rather surprising behavior for people who would likely expect the
> list of things created within the last 30 days to be constant over the
> course of a day (excepting things added during the day).
>
> Karen
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