django-orm case-insensitive order by

问题

I know, I can run a case insensitive search from DJango ORM. Like,

User.objects.filter(first_name__contains="jake")
User.objects.filter(first_name__contains="sulley")
User.objects.filter(first_name__icontains="Jake")
User.objects.filter(first_name__icontains="Sulley")

And also, I can fetch them as

user_list = User.objects.all().order_by("first_name")
# sequence: (Jake, Sulley, jake, sulley)
user_list = User.objects.all().order_by("-first_name") # for reverse
# sequence: (sulley, jake, Sulley, Jake)

Is there a direct way for a case-insensitive fetch?? As in I want a sequence as

# desired sequence: jake, Jake, sulley, Sulley

If not, then suggest a best way to do it. Thanks in advance.

回答1:

This answer is outdated, check below solution with django 1.8 ->

I found solution using .extra

class MyModelName(models.Model):
   is_mine = models.BooleanField(default=False)
   name = models.CharField(max_length=100)


MyModelName.objects.filter( is_mine=1 ).extra(\
    select={'lower_name':'lower(name)'}).order_by('lower_name')

original link:

http://naorrosenberg.blogspot.fi/2011/04/django-models-orderby-charfield-case.html

回答2:

Since Django 1.8 it is possible with:

from django.db.models.functions import Lower
MyModel.objects.order_by(Lower('myfield'))

https://code.djangoproject.com/ticket/6498

回答3:

This is for postgresql, but maybe it will be useful for other databases too:

http://scottbarnham.com/blog/2007/11/20/case-insensitive-ordering-with-django-and-postgresql/

来源：https://stackoverflow.com/questions/3409047/django-orm-case-insensitive-order-by

标签

django

case-insensitive

fetch

django-orm