OpenSlides/openslides/users/models.py

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# TODO: Check every app, that they do not import Group or User from here.
from random import choice
from django.contrib.auth.hashers import make_password
from django.contrib.auth.models import ( # noqa
AbstractBaseUser,
BaseUserManager,
Group,
Permission,
PermissionsMixin,
)
from django.db import models
from django.utils.translation import ugettext_lazy, ugettext_noop
from openslides.config.api import config
from openslides.projector.models import SlideMixin
from openslides.utils.rest_api import RESTModelMixin
from .exceptions import UserError
class UserManager(BaseUserManager):
"""
UserManager that creates new users only with a password and a username.
"""
def create_user(self, username, password, **kwargs):
user = self.model(username=username, **kwargs)
user.set_password(password)
user.save(using=self._db)
return user
def create_or_reset_admin_user(self):
"""
Creates an user with the username admin. If such a user exists, resets
it. The password is (re)set to 'admin'. The user becomes member of the
group 'Staff' (pk=4).
"""
try:
staff = Group.objects.get(pk=4)
except Group.DoesNotExist:
raise UserError("Admin user can not be created or reset because "
"the group 'Staff' is not available.")
admin, created = self.get_or_create(
username='admin',
defaults={'last_name': 'Administrator'})
admin.default_password = 'admin'
admin.password = make_password(admin.default_password, '', 'md5')
admin.save()
admin.groups.add(staff)
return created
def generate_username(self, first_name, last_name):
"""
Generates a username from first name and last name.
"""
first_name = first_name.strip()
last_name = last_name.strip()
if first_name and last_name:
base_name = ' '.join((first_name, last_name))
else:
base_name = first_name or last_name
if not base_name:
raise ValueError("Either 'first_name' or 'last_name' must not be "
"empty")
if not self.filter(username=base_name).exists():
generated_username = base_name
else:
counter = 0
while True:
counter += 1
test_name = '%s %d' % (base_name, counter)
if not self.filter(username=test_name).exists():
generated_username = test_name
break
return generated_username
def generate_password(self):
"""
Generates a random passwort.
"""
chars = 'abcdefghijkmnpqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789'
size = 8
return ''.join([choice(chars) for i in range(size)])
class User(RESTModelMixin, SlideMixin, PermissionsMixin, AbstractBaseUser):
"""
Model for users in OpenSlides. A client can login as a user with
credentials. A user can also just be used as representation for a person
in other OpenSlides app like motion submitter or (assignment) election
candidates.
"""
USERNAME_FIELD = 'username'
slide_callback_name = 'user'
username = models.CharField(
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ugettext_lazy('Username'), max_length=255, unique=True, blank=True)
first_name = models.CharField(
ugettext_lazy('First name'), max_length=255, blank=True)
last_name = models.CharField(
ugettext_lazy('Last name'), max_length=255, blank=True)
# TODO: try to remove the default argument in the following fields
structure_level = models.CharField(
max_length=255, blank=True, default='',
verbose_name=ugettext_lazy('Structure level'),
help_text=ugettext_lazy('Will be shown after the name.'))
title = models.CharField(
max_length=50, blank=True, default='',
verbose_name=ugettext_lazy('Title'),
help_text=ugettext_lazy('Will be shown before the name.'))
about_me = models.TextField(
blank=True, default='', verbose_name=ugettext_lazy('About me'),
help_text=ugettext_lazy('Your profile text'))
comment = models.TextField(
blank=True, default='', verbose_name=ugettext_lazy('Comment'),
help_text=ugettext_lazy('Only for notes.'))
default_password = models.CharField(
max_length=100, blank=True, default='',
verbose_name=ugettext_lazy('Default password'))
is_active = models.BooleanField(
ugettext_lazy('active'), default=True,
help_text=ugettext_lazy(
'Designates whether this user should be treated as '
'active. Unselect this instead of deleting accounts.'))
is_present = models.BooleanField(
ugettext_lazy('present'), default=False,
help_text=ugettext_lazy('Designates whether this user is in the room '
'or not.'))
objects = UserManager()
class Meta:
permissions = (
('can_see_name', ugettext_noop('Can see names of users')),
('can_see_extra_data', ugettext_noop('Can see extra data of users')),
('can_manage', ugettext_noop('Can manage users')),
)
ordering = ('last_name',)
def __str__(self):
return self.get_full_name()
def get_slide_context(self, **context):
"""
Returns the context for the user slide.
"""
# Does not call super. In this case the context would override the name
# 'user'.
return {'shown_user': self}
def get_full_name(self):
"""
Returns a long form of the name.
E. g.: * Dr. Max Mustermann (Villingen)
* Professor Dr. Enders, Christoph (Leipzig)
"""
structure = '(%s)' % self.structure_level if self.structure_level else ''
return ' '.join((self.title, self.get_short_name(), structure)).strip()
def get_short_name(self):
"""
Returns only the name of the user.
E. g.: * Max Mustermann
* Enders, Christoph
"""
# Strip white spaces from the name parts
first_name = self.first_name.strip()
last_name = self.last_name.strip()
# The user has a last_name and a first_name
if first_name and last_name:
if config['users_sort_users_by_first_name']:
name = ' '.join((first_name, last_name))
else:
name = ', '.join((last_name, first_name))
# The user has only a first_name or a last_name or no name
else:
name = first_name or last_name or self.username
return name
def reset_password(self, password=None):
"""
Reset the password for the user to his default-password.
"""
if password is None:
password = self.default_password
self.set_password(password)
def get_view_class(self):
"""
Returns the main view class (viewset class) that should be unlocked
if the user (means its name) appears on a slide.
"""
from .views import UserViewSet
return UserViewSet