Hello,
Are you sure you don't have a cyclic reference in there:
cat1 -> cat2 -> cat1 ?
You can always insert a
import pdb; pdb.set_trace()
line in the method and use the debugger to figure out what's keeping
the loop from exiting normally.
Nuno
On Mon, Mar 29, 2010 at 2:55 PM, mouadino <mouad...@gmail.com> wrote:
> hello everybody
>
> I have a model class where i m using a foreign key self-referencing
> here is my code :
>
> class Categories(custom.Model):
> url = models.ForeignKey(Urls, null=True, blank=True)
> category = models.CharField(max_length=128)
> parent_category = models.ForeignKey('self', null=True, blank=True)
>
> def delete_all(self):
> """delete the parent category => deleting all sub categories
> with the cascade delete"""
> category = self
> while category.parent_category: #the root category have the
> parent_category NULL
> category = category.parent_category
>
>
> category.delete()
>
>
> and when i m using the delete_all() with a sub category usually it
> goes until the root category with the loop and should delete it with
> all the sub categories because of the cascade delete .
>
> But when i m calling the delete_all() it's goes in an infinity loop .
>
> If someone can help me , and sorry for my English
>
>
>
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