Hi,
I have a File model with a ManyToManyField to 'self'. Which works
great, except that it's possible to add self to the parents (File 3
could add File 3 as a parent, causing an infinite relationship loop).
So i came up with a save() method which should remove self from the
parents before saving. But that does not seem to work.
Here's the relationship line in my File model:
parents = models.ManyToManyField('self', symmetrical=False,
related_name="child_set", null=True, blank=True,
filter_interface=models.HORIZONTAL)
with the following save method:
def save(self):
for p in self.parents.all():
if int(p.id) == int(self.id):
self.parents.remove(p)
print self.parents.all()
self.title = self.title.strip()
if not self.id:
self.created_at = datetime.today()
self.updated_at = datetime.today()
super(File, self).save()
The print self.parents.all() line does print a [] line with self
removed from the parents. Apparently this just does not get saved.
Any ideas?
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