Question

I’ve been using the built-in Django comments system which has been working great. On a particular page I need to list the latest X comments which I’ve just been fetching with:

latest_comments =   
Comment.objects.filter(is_public=True, is_removed=False)  
.order_by('submit_date').reverse()[:5]

However I’ve now introduced a Boolean field ‘published’ into the parent object of the comments, and I want to include that in the query above. I’ve tried using the content_type and object_pk fields but I’m not really getting anywhere. Normally you’d do something like:

Comment.objects.filter(blogPost__published=True)

But as it is not stored like that I am not sure how to proceed.

Answer 1

posts_ids = BlogPost.objects.filter(is_published=True).values_list('id', flat=True) #return [3,4,5,...]
ctype = ContentType.objects.get_for_model(BlogPost)
latest_comments = Comment.objects.filter(is_public=True, is_removed=False, content_type=ctype, content_object__in=posts_ids).order_by('-submit_date')[:5]