'Q' object has no attribute 'split' - Django

Question

I have a Model:

class Authors(models.Model):
   name = models.TextField()
   person = models.ForeignKey(Person)

and query:

authors = Author.objects.filter(
                                (Q(name__iregex=r"\y{0}\y".format(s1)),
                                ~Q(name__iregex=r"\y{0}\y".format(s2))
                                ),
                                person=None).order_by('-id')

I am getting the error:

'Q' object has no attribute 'split'

why is this? i am not using split() though.. the line of error is in this query line.

@frnhr matches only whole words and not part of words.. http://stackoverflow.com/a/14998059/903790 — doniyor, Apr 03 '14 at 17:34

score 9 · Accepted Answer · answered Apr 03 '14 at 17:37

9

I think you need to join your Q() filters with a logical operator like | or &.

authors = Author.objects.filter(
                                (Q(name__iregex=r"\y{0}\y".format(s1)) &
                                ~Q(name__iregex=r"\y{0}\y".format(s2))
                                ),
                                person=None).order_by('-id')

answered Apr 03 '14 at 17:37

Sohan Jain

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17

i thought, ``,`` stays for ``&``, doesnot it? – doniyor Apr 03 '14 at 17:39
1

I think because you have the `Q()` objects wrapped in a paren, you need to use `&` explicitly. I.e, you have `filter( (Q(), Q()), person=None)`. Does changing to `&` work? I'm not entirely confident about this answer TBH haha – Sohan Jain Apr 03 '14 at 17:42
@Furbeenator https://docs.djangoproject.com/en/1.7/topics/db/queries/#complex-lookups-with-q-objects – Sohan Jain Nov 19 '14 at 05:02
1

Thanks, @Sohan Jain. I see they state `Q objects can be combined using the & and | operators. When an operator is used on two Q objects, it yields a new Q object.` but the examples didn't show any `&`s and they are implied with the filter. It would be nice if the docs showed when the explicit `&` is required, rather than have to lookup the "split" error. Thanks again, this got me out of a jam! – Furbeenator Nov 19 '14 at 17:53
Actually I still don't see clearly when we have to use the explicit and/or notation and when comma separated Q are enough... – Alex Gidan Feb 02 '15 at 23:51

'Q' object has no attribute 'split' - Django

1 Answers1