django

django QuerySet exclusive another QuerySet
https://stackoverflow.com/questions/27843876/django-exclude-items-from-queryset-from-another-queryset

how django ordering after serializer
https://www.reddit.com/r/djangolearning/comments/bhk70p/how_to_sort_items_in_a_serializer/

how to ordering by count size in django
https://stackoverflow.com/questions/23033769/django-order-by-count