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User and group management

Project description

Latest PyPI version Number of PyPI downloads

Plugin for providing a user and group management UI.


  • Users and Groups CRUD

  • Principal membership of users and groups

  • Roles support

  • Local Manager Support

  • User and group form configuration



While installation lxml gets compiled, the required dev headers must be installed on the system.

On debian based systems install:

$ apt-get install -y libxml2-dev libxslt1-dev

Development and Testing

For testing and development, cone.ugm contains a buildout configuration. Download or checkout package and run:

cone.ugm$ ./ python3

Example Configuration

For testing and demo purposes, an example UGM configuration is contained in the cfg folder of the source package.

It contains the configuration file ugm.xml, containing the general UGM configuration and localmanager.xml, containing the configuration about local users and groups management. These two files can be edited TTW via the settings UI.

The ugm.ini file contains the application configuration:


cone.plugins =

ugm.backend = file
ugm.config = %(here)s/ugm.xml
ugm.localmanager_config = %(here)s/localmanager.xml

ugm.users_file = %(here)s/../parts/ugm/users
ugm.groups_file = %(here)s/../parts/ugm/groups
ugm.roles_file = %(here)s/../parts/ugm/roles
ugm.datadir = %(here)s/../parts/ugm/data


In this example the file backend is configured as UGM backend. For configuring SQL or LDAP based backends, see documentation at cone.sql respective cone.ldap.

Start the application:

cone.ugm$ ./bin/pserver cfg/ugm.ini

and browse http://localhost:8081/. Default admin user password is admin.

Configuration and Customization


For customizing the plugin, make an integration package and include it in your setup.


cone.ugm internally uses 3 roles in order to permit user actions.

editor is permitted to manage membership, admin additionally is permitted to add, edit and delete users and groups, and manager is a superuser. If UGM is the only plugin used, you can reduce the available roles to this three: = [
    ('editor', 'Editor'),
    ('admin', 'Admin'),
    ('manager', 'Manager')

Principal Forms

The basic principal form customization happens in the ugm XML configuration file. Each field to render must have an entry in users_form_attrmap respective groups_form_attrmap:

    <value>My Field</value>

By default, a non required text field gets rendered for each custom entry in the XML configuration.

To make a custom field required, the easiest way is to use default_form_field_factory and register it with user_field respective group_field:

from cone.ugm.browser.principal import default_form_field_factory
from cone.ugm.browser.principal import user_field
from functools import partial

my_field_factory = user_field('my_field')(
    partial(default_form_field_factory, required=True)

It’s possible to register custom principal field factories for dedicated UGM backends. This example is taken from cone.ldap and registers a user field factory for cn attribute in ldap backend:

ldap_cn_field_factory = user_field('cn', backend='ldap')(
    partial(default_form_field_factory, required=True)

The most flexible way for principal form field customization is to provide a callback function and call the yafowil factory directly:

from yafowil.base import factory

def age_field_factory(form, label, value):
    return factory(
            'label': label,
            'datatype': int

Note. The value of the custom field gets written to principal attributes as extracted from the widget. Make sure to define the expected datatype in the widget properties or define a suitable custom extractor.

Principal Listings


Object Events

You can react to creation, modification and deletion of users and groups by binding to the given event classes.

These events are fired when the user manipulations are done in the UGM management forms.

necessary imports:

from zope.event import classhandler
from cone.ugm import events

Defining the event handlers

for users:

def on_user_created(event):
    print(f"user {event.principal} with id {} created")

def on_user_modified(event):
    print(f"user {event.principal} with id {} modified")

def on_user_deleted(event):
    print(f"user {event.principal} with id {} deleted")

and for groups:

def on_group_created(event):
    print(f"group {event.principal} with id {} created")

def on_group_modified(event):
    print(f"group {event.principal} with id {} modified")

def on_group_deleted(event):
    print(f"group {event.principal} with id {} deleted")


  • Robert Niederreiter (Author)

  • Florian Friesdorf

  • Jens Klein


1.0a7 (2023-02-02)

  • Catch AttributeError in model.user.User.expires. Happens in user add form where user not exists yet. [rnix]

1.0a6 (2022-12-05)

  • Remove expiration yafowil blueprint from cone.ugm.browser.expires. Account expiration is now done with a regular date field since UGM backends allow setting expires attributes as datetime objects as of node.ext.ugm 1.1. [rnix]

  • Move users_expires_attr and users_expires_unit settings to cone.ldap, since they always have been used only for LDAP UGM backend. [rnix]

  • Expose expires attribute of backend user in cone.ugm.model.User. [rnix]

  • Fix general settings form according to changes in yafowil 3.0. [rnix]

1.0a5 (2022-10-06)

  • Replace deprecated use of Nodify by MappingNode. [rnix]

1.0a4 (2021-11-08)

  • Adopt import path of safe_decode and node_path. [rnix]

1.0a3 (2021-10-25)

  • Fix UsersListing and GroupsListing search filter to ignore None values.

  • Increase listing slice size to 15. [rnix]

  • Add change_password form. [rnix]

  • Add support for objects events on user and group add/modify/delete. [zworkb]

1.0a2 (2020-11-12)

  • Fix delete principal. [rnix]

1.0a1 (2020-07-09)

  • Use ContentAddForm and ContentEditForm behaviors instead of B/C AddBehavior and EditBehavior for user and group form. [rnix]

  • Use layout_config decorator introduced in 1.0rc1. [rnix]

  • Remove cone.ugm.model.users.users_factory and cone.ugm.model.groups.groups_factory. Register related node classes directly as app entries. [rnix]

  • Bind UGM columns content view to UGM models. [rnix]

  • Move LDAP related code to cone.ldap. [rnix]

  • Users autoincrement start setting value may be empty in config. [rnix]

  • Do not remember users and groups on volatile storage. [rnix]

  • Use IUgm.invalidate for invalidation of users and groups on UGM backend. [rnix]

  • Rename cone.ugm.browser.listing.ColumnListing.query_items to listing_items. [rnix]

  • Turn and cone.ugm.browser.user.Groups property descriptors into ColumnListing deriving tiles. [rnix]

  • Remove superfluous jQuery.sortElements.js and naturalSort.js. [rnix]

  • Move plugin config code inside main hook function. [rnix]

  • Python 3 Support. [rnix]

  • Convert doctests to unittests. [rnix]

  • Use instead of [rnix]

  • Use cone.tile.tile decorator instead of cone.tile.registerTile. [rnix]

  • Use request.has_permission instead of [rnix]

  • Remove inout widget. Listing widget is the only principal membership now. Remove corresponding default_membership_assignment_widget, user_display_name_attribute and group_display_name_attribute from settings [rnix]

  • Change UI. Principal form and principal membership are not displayed in right column together any more. When viewing a principals content, left column displays the listing and right column the principal form. When viewing a principal, left column displays the principal form and right column displays the principal membership. [rnix]

  • Update to >= 1.0. [rnix]

  • Change license to LGPLv3. [rnix]


  • Directly depend on lxml in [rnix, 2014-05-13]


  • Adopt dependencies. [rnix, 2013-01-10]


  • Portrait CSS fix. [rnix, 2012-10-30]

  • Python 2.7 Support. [rnix, 2012-10-16]

  • adopt to 0.9.4 [rnix, 2012-07-29]

  • adopt to node 0.9.8 [rnix, 2012-07-29]

  • adopt to plumber 1.2 [rnix, 2012-07-29]

  • Simplify cone.ugm.browser.actions. [rnix, 2012-07-26]

  • Add local manager functionality. [rnix, 2012-07-25]


  • Get rid of BBB classes usage from [rnix, 2012-05-18]

  • Fix invalidation after settings form save. [rnix, 2012-04-23]

  • Portrait Image support. [rnix, 2012-04-21]

  • Configuration for attributes exposed to attribute map. [rnix, 2012-04-19]

  • Invalidate after creating principal or roles container. [rnix, 2012-04-19]

  • Adopt expires blueprint to yafowil.widget.datetime 1.3. [rnix, 2012-04-19]


  • Add Autoincrement Feature for user ids. [rnix, 2012-03-30]


  • Account expiration widget improvements. [rnix, 2012-03-20]


  • Add account expiration functionality. [rnix, 2011-03-06]

  • Make display field of In-Out widget configurable. [rnix, 2011-01-31]

  • Dynamic width CSS. [rnix, 2011-12-18]

  • Get rid of global cone.ugm.backend. is returend by cone.ugm.model.utils.ugm_backend. [rnix, 2011-11-22]

  • Explicit names for settings forms. [rnix, 2011-11-18]

  • Add node properties for users and groups to get displayed in navtree if displayed. [rnix, 2011-11-16]


  • Initial release.



Version 3, 29 June 2007

Copyright © 2007 Free Software Foundation, Inc. <>

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This version of the GNU Lesser General Public License incorporates the terms and conditions of version 3 of the GNU General Public License, supplemented by the additional permissions listed below.

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