Try using a postsave signal. It'll automatically trigger your method upon saving a Project.
http://docs.djangoproject.com/en/dev/topics/signals/#receiver-functions Basically, all you'd need is: from django.db.models.signals import post_save def member_check(sender, **kwargs): #your code post_save.connect(member_check, sender = Project) But you should know that on some systems (like mine), it sends the signal twice per save. On Sep 23, 4:46 pm, M Godshall <michaelgodsh...@gmail.com> wrote: > I have a Project model with a ManyToManyField called "members" to keep > track of members of a project. Whenever the model is updated, I need > to check if certain members need to be removed from or added to the > m2m field. The most logical place to do this is in the model's custom > save method, but when I try to save the model in the admin the members > field reverts to its previous state even after running > self.members.remove(user1) and self.members.add(user2). From what I > have researched and tested so far, if you save a project from a front- > end view, the m2m field updates without reverting to its previous > state, but I really need this functionality when a model is saved in > the admin as well. Any insight into how to make this work would be > appreciated. Here's what I'm working with right now: > > class Project(models.Model): > .... > assigned_to = models.ForeignKey(User, > related_name="projects_assigned_to") > sales_rep = models.ForeignKey(User, > related_name="sales_rep_projects") > sales_mgr = models.ForeignKey(User, > related_name="sales_mgr_projects") > .... > > def save(self, force_insert=False, force_update=False): > if Project.objects.filter(id__exact=self.id).count(): > project = Project.objects.get(id=self.id) > old_sales_rep = project.sales_rep > old_sales_mgr = project.sales_mgr > super(Project, self).save() > if old_sales_rep != self.sales_rep: > if old_sales_rep in self.members.all(): > self.members.remove(old_sales_rep) > if self.sales_rep: > self.members.add(self.sales_rep) > if old_sales_rep == self.assigned_to: > new_assigned = self.sales_rep > if old_sales_mgr != self.sales_mgr: > if old_sales_mgr in self.members.all(): > self.members.remove(old_sales_mgr) > if self.sales_mgr: > self.members.add(self.sales_mgr) > if old_sales_mgr == self.assigned_to: > new_assigned = self.sales_mgr > if new_assigned: > self.assigned_to = new_assigned > super(Project, self).save() --~--~---------~--~----~------------~-------~--~----~ 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 django-users+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/django-users?hl=en -~----------~----~----~----~------~----~------~--~---
