vittoriozamboni/django-groups-manager

Manage django groups collection based on django-mptt.

Django groups manager

This application allows to create hierarchical groups by using django-mptt tree structure. It is also possible to synchronize the groups with Django's auth.models Group and User, in order to take advantage of permissions applications like django-guardian.

Documentation

Online documentation is available at http://django-groups-manager.readthedocs.org/.

Note

Version 1.1.0 changed the default slugify function from awesome-slugify to django.utils.text.slugify. To keep using awesome-slugify you need to install it separately, and then customize the settings:

from slugify import slugify
GROUPS_MANAGER = {
    # ... other settings
    'SLUGIFY_FUNCTION': lambda s: slugify(s, to_lower=True),
    'SLUGIFY_USERNAME_FUNCTION': lambda s: slugify(s, to_lower=True, separator="_")
}

Requirements

- Python >= 3.8
- Django >= 3.2
- django-guardian for user permissions
- jsonfield == 3.1.0

For older versions of Python or Django, please look at 1.2.0 (Django <3.2, Python < 3.8>) or 0.6.2 version (Django 1.x, Python < 3.5).

Installation

Use pip to install django-groups-manager:

pip install django-groups-manager

To use per-object permissions related features, django-guardian is required as well:

pip install django-guardian

Django Configuration

1. Add groups_manager into your INSTALLED_APPS:

   INSTALLED_APPS = (
      ...
      # 'guardian', # add as well to use permissions related features
      'groups_manager',
   )

2. Create models with migrate:

   python manage.py migrate groups_manager

   Note: for users that are upgrading from <0.4.2, launch:

   python manage.py migrate groups_manager 0001 --fake
   python manage.py migrate groups_manager

3. To enable django auth.models synchronization, add to the settings module:

   GROUPS_MANAGER = {
       'AUTH_MODELS_SYNC': True,
   }

Basic usage

The common case is to create a simple parent-son relation:

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)

Per-object permissions handling is done by django-guardian. The Group/Member relation can be used to assing objects:

from football.models import TeamBudget
small_budget = TeamBudget.objects.create(euros='1000')
thohir.assign_object(staff, small_budget)
thohir.has_perm('change_teambudget', small_budget)  # True
palacio.has_perm('change_teambudget', small_budget)  # False
# or via group
mid_budget = TeamBudget.objects.create(euros='3000')
staff.assign_object(mid_budget)
thohir.has_perm('change_teambudget', mid_budget)  # True
palacio.has_perm('change_teambudget', mid_budget)  # False

Owner/Group members policies can be defined via PERMISSIONS setting, as a dictionary of GROUPS_MANAGER, but can also be overwritten via custom_permissions kwarg:

from football.models import Match
fc_barcelona = Group.objects.create(name='FC Barcelona')
friendly_match = Match.objects.create(home=fc_internazionale, away=fc_barcelona)
palacio.assign_match(players, friendly_match, custom_permissions={'group': ['play']})
thohir.has_perm('play_match', friendly_match)  # False
palacio.has_perm('play_match', friendly_match)  # True

For more complex cases, see documentation.