> subtasks = tasks.exclude(part_of__exact='None')
> returns the correct subset, with the "top" tasks omitted. Why?
'None' is a string, so if anything, you'd have to use: part_of__exact=None
However, what you're looking for is probably:
subtasks = Task.objects.filter(part_of__isnull=True)
Michael
[EMAIL PROTECTED] schrieb:
> Why does hitting TAB (nervous emacs autoindent twitch) complete a
> post being edited??? Anyhow, here's the full question This could be
> elementary... In a model:
>
> class Task(models.Model): ... part_of = models.ForeignKey('Task',
> null=True, blank=True, related_name='subtasks') ...
>
> I am trying to do a query (after having a number of tasks and
> subtasks entered:
>
> tasks = Task.objects.all() toptasks =
> tasks.filter(part_of__exact='None')
>
> to find tasks that are "not part of another", e.g. they are not
> "subtasks". This always returns an empty set However:
>
> subtasks = tasks.exclude(part_of__exact='None')
>
> returns the correct subset, with the "top" tasks omitted. Why?
>
> On Feb 7, 12:06 pm, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
> wrote:
>> This could be elementary... In a model:
>>
>> class Task(models.Model):t
> >
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