anybody?
On 23 Mar, 16:17, eli <eliasz.wont...@gmail.com> wrote:
> How to pass to the Sum() function (ORM) more than one field?
>
> My problem:
>
> class Model1(models.Model):
> name = models.CharField(u'Name', max_length=255)
>
> class Model2(models.Model):
> fk1 = models.ForeignKey(Model1, related_name='fk_1')
> fk2 = models.ForeignKey(Model1, related_name='fk_2')
>
> I want to sort data by sum of fk1 and fk2 field.
>
> Model1.objects.annotate(myfk1=Count('fk1', distinct=True), myfk2=Count
> ('fk2', distinct=True)).annotate(my_sum=Sum('myfk1+myfk2')).order_by('-
> my_sum')
>
> Thanks for help.
>
> regards.
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