Hi, Thanks for the advice, as usual with me, it's thrown up more questions... :D
On 26 January 2011 12:20, Adrian Bool <[email protected]> wrote: > I have two models, the first is a 'change request ticket' and the > second reflects the status of that ticket. They are linked by a > ForeignKeyField on the first table. > > You may find it best to collapse them into a single object; using the > 'choice' option to allow the user to set the ticket's state. Unfortunately this isn't an option for this value, these need to be as flexible as possible, hard-coding into the model isn't an option. :( > The two problems that I have are: > > 1) Some of the 'states' should mark the ticket as closed, so when the > ticket is saved with the state of 'closed', it should be marked as > 'completed' with the date and time the action was carried out. > > You can jump in and change the model's data before the model is saved by > over-riding the 'save' method in your model. > Below is one of my models. My frequency attribute could be quite similar to > what you need for your state field. Below you can see where I'm setting a > number of my attributes (based upon the parent object when the Charge object > is created as an Inline) before this Charge is saved, > class Charge (models.Model): > CHARGE_FREQUENCY_CHOICES = ( > (u'NRC', u'Non-Recurring'), > (u'MRC', u'Monthly'), > (u'QRC', u'Quaterly'), > (u'ARC', u'Annual') > ) > > frequency = models.CharField(max_length=15, > choices=CHARGE_FREQUENCY_CHOICES) > <cut more attributes> > > def save(self, *args, **kwargs): > self.description = self.service > self.customer = self.service.customer > self.legacy_charge_id = None > self.prorata = False > self.created_date = datetime.date.today() > self.started_date = self.service.completed_date > self.expiry_date = self.service.expiry_date > self.terminated_date = self.service.terminated_date > super(Charge, self).save(*args, **kwargs) Hmmm, I'm obviously missing something. I want to execute something like the following: class ChangeStatus(models.Model): Description = models.CharField(max_length=128) ClosesChangeRequest = models.BooleanField() def __unicode__(self): return self.Description class ChangeHeader(models.Model): Title = models.CharField(max_length=255) Requestor = models.ForeignKey(User) Summary = models.TextField() AffectedItems = models.ManyToManyField(ConfigurationItem) ScmRepo = models.ForeignKey(ScmRepo) Created = models.DateField() Due = models.DateTimeField() Status = models.ForeignKey(ChangeStatus) Completed = models.BooleanField() def save(self,*args,**kwargs): if not self.id: self.created = datetime.date.today() if self.Status.ClosesChangeRequest == True: self.completed = True super(ChangeHeader, self).save(*args,**kwargs) but I assume the issue I'm running in to is that the Save handler doesn't know the current state of the Status field. Is there a better approach which avoids hard-coding? Thanks, M. -- You received this message because you are subscribed to the Google Groups "Django users" group. To post to this group, send email to [email protected]. 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.
