Django: ordering numerical value with order_by

Question

I\'m in a situation where I must output a quite large list of objects by a CharField used to store street addresses.

My problem is, that obviously the data is ordere

Answer 1

I was looking for a way to sort the numeric chars in a CharField and my search led me here. The name fields in my objects are CC Licenses, e.g., 'CC BY-NC 4.0'.

Since extra() is going to be deprecated, I was able to do it this way:

MyObject.objects.all()
    .annotate(sorting_int=Cast(Func(F('name'), Value('\D'), Value(''), Value('g'), function='regexp_replace'), IntegerField()))
    .order_by('-sorting_int')

Thus, MyObject with name='CC BY-NC 4.0' now has sorting_int=40.