I have the following model:
class GroupsOfUser(models.Model):
name = models.CharField(max_length=50)
description = models.TextField(blank=True,help_text="Optional")
slug = models.SlugField(prepopulate_from=('name',))
group_members = models.ManyToManyField(User, verbose_name="group
members", related_name="groupmembers")
group_admins = models.ManyToManyField(User, verbose_name="group
admins", related_name="groupadmins")
group_owner = models.ForeignKey(User, verbose_name="group owner")
date_created = models.DateTimeField(_("Creation date"),
auto_now_add=True)
closed_group = models.BooleanField(default=False)
class Admin:
list_display = ('name', 'description')
def __str__(self):
return self.name
def save(self):
self.slug = slugify(self.name, instance=self)
super(GroupsOfUser, self).save()
And a form:
class GroupForm(forms.ModelForm):
class Meta:
model = GroupsOfUser
exclude = ('group_members', 'group_admins', 'group_owner',
'date_created', 'slug', )
And the a view to save form data:
@login_required
def groupadd(request):
if request.method == 'POST':
f = GroupForm(request.POST)
if f.is_valid():
newgroup = f.save(commit=False)
newgroup.group_owner = request.user
newgroup.group_members = request.user.id
newgroup.group_admins = request.user.id
newgroup.save()
f.save_m2m()
return HttpResponseRedirect("/group/list/")
else:
form = GroupForm()
return render_to_response('groups/group_add.html', {'form': form})
Trouble is when I try and save I get the following error:
ValueError at /group/create/
<class 'django.contrib.auth.models.User'> instance needs to have a
primary key value before a many-to-many relationship can be used.
I think this is because of the way my model is created with the two
ManyToMany fields, but I need to try and populate these with the
user.id. I have tried a couple of things but with no luck. Any ideas?
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