Here is a small example:
class Item(models.Model):
title = models.CharField(max_length=25)
other = models.TextField(null=True, blank=True)
items = models.ManyToManyField('self', null=True, blank=True)
def __unicode__(self):
return self.title
def save(self, force_insert=False, force_update=False):
super(Item, self).save(force_insert, force_update)
if self.other.strip():
pieces = [x.strip() for x in self.other.split(',')]
self.items.clear()
for piece in pieces:
other = Item.objects.get(title=piece)
self.items.add(other)
the idea here is that the user can specify the items in the
ManyToManyField by providing a comma-separated list of item titles in
the "other" field. This works fine from shell. It does not work from
the admin site, I think because the form saves related data *after*
the model itself is saved, so my code in save() runs, but it seems
that after that it gets overwritten by the form.
So, what is the best way to do what I am trying to do? I am hoping to
be able to do it in the model (since that's where I think it belongs)
--
Thanks,
Medhat
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