cyberco wrote:
> Given:
> 
> =========Models==========
> class T(models.Model):
>     pass
> 
> class Y(models.Model):
>     t = models.ForeignKey(T, blank=True, null=True)
> ========================
> 
> I want to select all instances of a Y that have a null value for t. I
> would say that it should be...
> 
> ========================
> Y.objects.filter(t_id=None)
> 
> ========================
> 
> ...but that returns all instances of T although some instances
> definitely have a value for t.

...filter(t__isnull=True)


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