group attribute demo

model_define_groups.py

class some():
    groups = models.ManyToManyField(
        Group,
        verbose_name='组',
        blank=True,
        # help_text='The groups this user belongs to. A user will get all '
        #           'permissions granted to each of their groups.',
        related_name="user_set",
        related_query_name="user",
    )
def func():
    new_group, created = Group.objects.get_or_create(name='campaign')
    if new_group:
        user.groups.add(new_group)
    else:
        user.groups.add(created)