On Mon, Jul 7, 2014 at 11:47 AM, <9devm...@gmail.com> wrote:
> There are tables Product and Transaction. In Product admin there is a field
> that shows how many transactions have been created with this product.
>
> Now, I want to filter the period of time in which these transactions were
> created. For example, there was 30 transactions in the last week, but 100 in
> the last month.
>
> class Transaction(models.Model):
> created = models.DateTimeField()
> product = models.ForeignKey('Product')
>
> class Product(models.Model):
> name = models.CharField()
>
def num_of_trans(self, start_date=None, end_date=None):
qs = self.transaction_set.all()
if start_date:
qs = qs.filter(created__gt=start_date)
if end_date:
qs = qs.filter(created__lt=end_date)
return qs
Does that suffice?
Cheers
Tom
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