Django add new item to dict - django

Question

thread_list = thread.objects.select_related().filter(thread_forum_id = current_obj.id).order_by('-thread_date')
for thread in thread_list:
count = post.objects.select_related().filter(post_thread_id = thread.id).count()
thread.post = count
How do that?
thread.post = count
^
class thread(models.Model):
mess = models.CharField(max_length=5000)
objects = thread_manager()
I want add new item to the list manualy.

Answer 1

Your question is not well-written, but I believe what you are looking for is annotation (docs here):
from django.db.models import Count
thread_list = thread.objects.select_related().filter(thread_forum_id=current_obj.id) \
.order_by('-thread_date').annotate(post_count=Count('post_thread_set'))
# I'm just guessing this name: 'post_thread_set'
The returned value is not a list of dicts, rather it is a queryset, which is an iterable of objects. You can then access post_count as an attribute:
thread_list[0].post_count

Answer 2

You way is good.
But there is a conflict:
thread_list = thread.objects.select_related().filter(thread_forum_id = current_obj.id).order_by('-thread_date')
for thread in thread_list:
count = post.objects.select_related().filter(post_thread_id = thread.id).count()
thread.post = count
Your class have name thread and your loop have name like class.
for thread in thread_list:
Just do that:
for threads in thread_list:
count = post.objects.select_related().filter(post_thread_id = threads.id).count()
threads.post = count
or something like this. Just change loop - i add 's' at the end of a word