Question

I have an action that a user can do many times a day. I’m trying to get a count of how many times the user has taken that action, but only for today’s date. Here’s the way I’m currently solving this, but is there an easier way? I feel like I should be able to fit this in one line. 🙂

today_slaps = 0
slaps = Slap.objects.filter(from_user=request.user.id)
for slap in slaps:
    if slap.date.date() == datetime.now().date():
        today_slaps += 1

The logic I’m looking for is:

slaps = Slap.objects.filter(from_user=2, date.date()=datetime.now().date()).count()

But that’s obviously throwing an error that a keyword can’t be an expression. Sorry if this is a basic one, but thoughts?

Answer 1

slap_count = Slap.objects.filter(from_user=request.user, \ 
                      date__gte=datetime.date.today()).count()

# specifically setting datetimefield=datetime.date.today() won't work
# gte = will work for datetimefield vs datetime object starting at that date
# it's also assumed there will never be a slap from the future. 

Generates the following SQL:

SELECT ... FROM ... WHERE ... date >= 2011-02-26 00:00:00 

So it’s safe to say you will only get today’s slaps, again, unless you have slaps from the future. If you do, I’d set every date__day, date__year, date__month explicitly.