Django Query sort case-insensitive using Model method with PostgreSQL

Question

I\'m really new to django, python and postgres... I can\'t seem to find the answer on how to order_by being case insensitive while using Model as the query method, only if y

Answer 1

Using QuerySet.extra(select=...):

@classmethod
def get_channel_list(cls, account):
    ret = cls.objects.extra(select={'name_lower': 'lower(name)'})
    ret = ret.order_by('-name_lower')
    ret = ret.filter(accountid=account).values_list('name', 'channelid')
    return channels

Answer 2

With django 1.8, there is a built-in solution:

from django.db.models.functions import Lower
...
ret = ret.order_by(Lower('name_lower'))
ret = ret.order_by(Lower('name_lower').asc())
ret = ret.order_by(Lower('name_lower').desc())