At this moment, to my knowledge, the only way to do this is by
overriding the save() method. Within your save, run the pre-save work
and then return the super.save().

I have suggested a pre_save / post_save hooks for ModelForm with some
code recently here: 
http://groups.google.com/group/django-developers/browse_thread/thread/c28da166daeea23c

-Alen Ribic

On May 6, 6:50 pm, Jashugan <[EMAIL PROTECTED]> wrote:
> I'd like to set some attributes to some default values before the
> model is created. Here's what I have so far:
>
>     slots_available = models.IntegerField(blank=True)
>     position = models.IntegerField(blank=True)
>
>     def save(self):
>         if slots_availalbe == None:
>             slots_available =
> StorageUnitType.objects.get(pk=parent).total_slots
>         if position == None:
>             position = 1
>         super(StorageUnit, self).save()
>
> Is this the best way of doing this? Is there a way I can specify that
> this code should run only when a model is first saved? I read
> something about using listeners for some post and pre save signals,
> but wasn't able to find any documentation on it.
>
> TIA
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