> Do you know anything about pre_save and post_save signals that occur > during a save? They are mentioned > here:http://www.djangoproject.com/documentation/db-api/#what-happens-when-..., > but are not expounded.
To be honest, I didn't. However I took a look at it and there are indeed signal hooks for pre_save and post_save in django/db/models/ base.py. There is also a django/db/models/signals.py Not to sure though how one registers these signals. -Alen On May 6, 7:22 pm, Jashugan <[EMAIL PROTECTED]> wrote: > Thanks, Alex. > > Do you know anything about pre_save and post_save signals that occur > during a save? They are mentioned > here:http://www.djangoproject.com/documentation/db-api/#what-happens-when-..., > but are not expounded. > > Also I modified my code (under the assumption that pk would be None > for newly created models): > > if self.pk == None: > self.slots_available = self.storage_unit_type.total_slots > self.position = 1 > > On May 6, 10:00 am, Alen Ribic <[EMAIL PROTECTED]> wrote: > > > 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... > > > -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 --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-users@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
