CODEWITHSUNDEEP
djangodjango-authentication
Alex Rothberg
Alex Rothberg

Reputation: 10993

Django Nested Groups: Groups in Groups

In Django (when using django.contrib.auth) may I add a Group to another Group? Ie a a Group be a member of another Group?

If so how do I do this? I add Users to a Group using the user_set, but from what I gather the default Group model does not have a many to many to it self.

Docs: https://docs.djangoproject.com/en/1.7/topics/auth/default/#groups

Upvotes: 17

Views: 4265

Answers (2)

JGC
JGC

Reputation: 6363

django-groups-manager

This can be done using django-groups-manager:

The following is taken from the documentation. It shows creating a group called 'F.C. Internazionale Milan', then adding 'Staff' and 'Players' sub-groups, then finally adding members to those groups.

from groups_manager.models import Group, Member
fc_internazionale = Group.objects.create(name='F.C. Internazionale Milan')
staff = Group.objects.create(name='Staff', parent=fc_internazionale)
players = Group.objects.create(name='Players', parent=fc_internazionale)
thohir = Member.objects.create(first_name='Eric', last_name='Thohir')
staff.add_member(thohir)
palacio = Member.objects.create(first_name='Rodrigo', last_name='Palacio')
players.add_member(palacio)

django-mptt

Note that, although the django-group-manager package appears to be actively maintained, this package is based on the django-mptt package, which is marked as unmaintained on the GitHub project.

As mentioned in a previous comment, the django-mptt package may also help implement this functionality.

The documentation provides an example that shows adding a parent attribute to the Group auth model.

https://django-mptt.readthedocs.io/en/latest/models.html#registration-of-existing-models

import mptt
from mptt.fields import TreeForeignKey
from django.contrib.auth.models import Group

# add a parent foreign key
TreeForeignKey(Group, on_delete=models.CASCADE, blank=True, null=True).contribute_to_class(Group, 'parent')

mptt.register(Group, order_insertion_by=['name'])

Upvotes: 3

Philipp Gensel
Philipp Gensel

Reputation: 61

The native Django doesn't provide this opportunity.

Upvotes: 2

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