On Jan 20, 11:53 am, tlow <patu...@googlemail.com> wrote:
> I think you can not do that with only one query using annotate.
>
> You could do it manually in python using the code above including the
> additional filter on comment_approved and merge all (entry, number)
> pairs with Entry.objects.all() using 0 for entries which are not
> listed in your first query. Since you won't display thousands of
> entries at the same time, this should not be a problem.
>
> You could also use extra to insert a subquery into your sql statement.
> See.:http://docs.djangoproject.com/en/dev/ref/models/querysets/
>
> For example: (just the idea)
> entries = Entry.objects.all().extra(select={"approved_comment_count":
> "SELECT Count(*) FROM Comment WHERE Comment.Entry_id = Entry.id AND
> Comment.is_published = True AND Comment.approved = 'Y'"})
>
> Cheers,
> Thomas
Yep that query would be:
latest_entry_list = Entry.objects
.filter(comment__approved='y')
.annotate(comments=Count('comment'))
.filter(is_published=True)
.order_by('-date_published')
[:15]
since you only want the count of approved comments
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