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?
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