#17253: Add foreign object in memory without saving to database ----------------------------------------------+-------------------- Reporter: cyberkoa@… | Owner: nobody Type: New feature | Status: new Component: Database layer (models, ORM) | Version: 1.3 Severity: Normal | Keywords: Triage Stage: Unreviewed | Has patch: 0 Easy pickings: 0 | UI/UX: 0 ----------------------------------------------+-------------------- Similar to the following post http://stackoverflow.com/questions/7908349/django-making-relationships-in- memory-without-saving-to-db?answertab=active#tab-top
class Group: name = models.Chars() def save(): super(self, Group).save() # access foreign objects members = self.groupmember_set.all() class GroupMember: group = models.ForeignKey(Group) member = modesl.ForeignKey(User) I have a page to allow people to create Group , and invited existing user to become member. When form is submitted, Group data and GroupMember data is submitted together. I would like to override the Group's save function() , and in the save function(), I need to access the GroupMember data. Example code g = Group(name='abc') gm1 = GroupMember(member=user1, group=g) gm2 = GroupMember(member=user2, group=g) g.groupmember_set.add(gm1) # Add to memory , I do not want to save to db immediately g.groupmember_set.add(gm2) # Add to memory , I do not want to save to db immediately g.save() gm1.save() gm2.save() Since the .add() function save the related object to db immediately , causing error. I do not want to save the Group object first , because it will trigger 2 times save() -- Ticket URL: <https://code.djangoproject.com/ticket/17253> Django <https://code.djangoproject.com/> The Web framework for perfectionists with deadlines. -- You received this message because you are subscribed to the Google Groups "Django updates" group. To post to this group, send email to django-updates@googlegroups.com. To unsubscribe from this group, send email to django-updates+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/django-updates?hl=en.