You need to look at overriding the model's save method in order to add data from one field to another dynamically.
http://docs.djangoproject.com/en/dev/topics/db/models/#overriding-model-methods On Aug 19, 2:03 am, djnubbio <giuseppe.nati...@gmail.com> wrote: > Sorry for wasting your preciuose time. I'm very newby in django. > > I have de following > > class Commessa(models.Model): > commessa = models.CharField(max_length=20) > quota_oraria=models.DecimalField(max_digits=5, decimal_places=2) > ... > > class Diario(models.Model): > data= models.DateField('data inizio') > commessa = models.ForeignKey(Commessa) > ore=models.IntegerField() > ... > > I want to add a column to Commessa containg the result of: > > quota_oraria * sum(ore) > > for each item in commessa. > > any suggestion will be greatly appreciated; tank vwry much in advance -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to django-us...@googlegroups.com. To unsubscribe from this group, send email to django-users+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-users?hl=en.
