Not working query_set.query.group_by = [..] in v1.8

[Mikhail Mitrofanov]

I am upgrade from Django v 1.6 to v1.8. I use this code:

query_set = Rubrica.objects.filter(...).annotate(count=Count('..')).order_by('user', '-pub_date')
query_set.query.group_by = ['user_id']

On Django version 1.6 this is works fine, but on version 1.8 results is not grouped by user_id field.
How can I solve this problem?

[Aymeric Augustin]

Since QuerySet.query.group_by is not a public API and therefore not covered by the stability policy, this isn't a bug.

Try asking for help on the django-users mailing list or the #django IRC channel instead.