How to solve getting model instances in specific order

by

Assuming you have a list like the one below

lst = ['AA1111111', 'AD2222222', 'AA3333333', 'AA4444444', 'АВ5555555']

Then you need to get users queryset in the same sequence as their passport data ordered in the list.

You can use this method in making a query that looks like:

SELECT *FROM usersWHERE passport_number IN ('AA1111111',                          'AD2222222',                          'AA3333333',                          'AA4444444',                          'АВ5555555')

This will be it new look

Users.objects.none().union(    *[User.objects.filter(passport_number=p) for p in lst], all=True)

You can also try this option in sorting it

lst = ['AA1111111', 'AD2222222', 'AA3333333', 'AA4444444', 'АВ5555555']order = {k: i for i, k in enumerate(lst)}items = sorted(    Users.objects.filter(passport_number__in=lst),    key=lambda x: order.get(x.passport_number),)

Leave a Comment