You can simply override the __init__ method and take a copy of the values then:
See Malcolm's explanation here: http://groups.google.com/group/django-users/msg/6d849eca95243371 -Mike On Aug 30, 5:28 am, "[EMAIL PROTECTED]" <[EMAIL PROTECTED]> wrote: > I tried using the signals... but setting a new value on the record, > seems to also set it on the _original_data ...which is odd...maybe I'm > not seeing something stupid that I'm doing? If I change my > marketing_status_name data in my view and save, the new data is in > both the _original_data, and in the new property value. > > # some extra properties removed to make it shorter to read > from django.db.models import signals > from django.dispatch import dispatcher > from django.db import models > > def backup_model_data(sender, instance, signal, *args, **kwargs): > instance._original_data = instance.__dict__.copy() > > class MarketingStatus(models.Model): > marketing_status_id = models.AutoField(primary_key=True) > marketing_status_name = models.CharField(blank=True, maxlength=30) > marketing_status_description = models.CharField(blank=True, > maxlength=255) > > def save(self): > testing = > self._original_data['marketing_status_name'] > testing2 = self.marketing_status_name > > triggererror = madeupvariabletotriggererror # > just stuck this here so I can view the data in the browser > > super(MarketingStatus, self).save() > > class Meta: > db_table = 'marketing_status' > > dispatcher.connect(backup_model_data,signal=signals.post_init,sender=MarketingStatus) > > On Aug 29, 2:24 pm, Doug B <[EMAIL PROTECTED]> wrote: > > > You could probably use the post_init signal to make a copy of the > > model values for comparison in your save method. I'm doing something > > similar to create a special manager object each time a certain model > > instance is created. > > > Something like this... > > > def backup_model_data(sender, instance, signal, *args, **kwargs): > > instance._original_data = instance.__dict__.copy() > > > class YourModel(model.Models): > > ... > > dispatcher.connect(backup_model_data,signal=signals.post_init, > > sender=YourModel) --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
