hi Dave finally, i have tried what you suggested. indeed, this is what is described here<http://www.djangoproject.com/documentation/model-api/#multi-table-inheritance>. and it works!
thanks a lot! cheers André On Tue, Jul 8, 2008 at 3:13 PM, Chester <[EMAIL PROTECTED]> wrote: > > André, > I'm assuming that you are using the Trunk version of Django because > subclassing isn't supported in previous versions. > > Assuming that. > > You can either have Item be an Abstract class which does not act like > a table but just a parent class containing common items. (this is not > what you are trying...) > > Or > > Each sub class is a seperate model from Item (assuming this is what > you want). From the documentation you should be able to do the > following: > > items = Item.objects.all() > for item in items: > try: > x = Item.task > type = "Task" > except: > try: > x = Item.event > type = "Event" > except: > type = "Item" > Do something pertaining to the item type.... > > > I haven't tried this but according to the docs it should work.... You > should also fill in the correct exception. I just don't know what it > is. > > Hope it helps. > > Dave. > > > > > > > On Jul 8, 2:12 am, "Andre Meyer" <[EMAIL PROTECTED]> wrote: > > hi all > > > > is it possible to determine the subclass of a model instance? > > > > what i mean is this: > > if you have a (n abstract) model class and two subclasses, like > > > > class Item(models.Model): > > pass > > > > class Task(Item): > > pass > > > > class Event(Item): > > pass > > > > and you retrieve > > > > items = Item.objects.all() > > > > how can you know whether the items are either tasks or events? > > > > items[0].__class__ returns just <class 'proj.app.models.Item'>. > > > > thanks for sharing your insights > > regards > > André > > > --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
