On Feb 3, 1:29 pm, nsitarz <nsit...@gmail.com> wrote:
> Well I've successfully subclassed the base aggregate class from
> Russell above and it works as expected, however when I try and group
> by my new aggregate field I get a FieldError. This makes sense to me
> because when I call values on the queryset the new field hasn't been
> created yet.
>
> Here's an example of what I mean:
> queryset.objects.values('date_group').annotate(date_group=Date
> ('datefield'))
>
> I've solved this in the past with calls like this:
> all_objects = queryset.all()
> all_objects.query.group_by=['date_group']
> annotated_objects = all_objects.annotate( date_group=Date
> ('datefield') )
>
> Is there a better way than this to accomplish grouping by aggregate
> fields?
Why don't you call values() after annotate()
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