Sith/core/models.py

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# -*- coding:utf-8 -*
#
# Copyright 2016,2017
# - Skia <skia@libskia.so>
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# - Sli <antoine@bartuccio.fr>
#
# Ce fichier fait partie du site de l'Association des Étudiants de l'UTBM,
# http://ae.utbm.fr.
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License a published by the Free Software
# Foundation; either version 3 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
# details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Sofware Foundation, Inc., 59 Temple
# Place - Suite 330, Boston, MA 02111-1307, USA.
#
#
import importlib
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from django.db import models
from django.core.mail import send_mail
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from django.contrib.auth.models import AbstractBaseUser, PermissionsMixin, UserManager, Group as AuthGroup, GroupManager as AuthGroupManager, AnonymousUser as AuthAnonymousUser
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from django.utils.translation import ugettext_lazy as _
from django.utils import timezone
from django.core import validators
from django.core.exceptions import ValidationError, PermissionDenied
from django.core.urlresolvers import reverse
from django.conf import settings
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from django.db import transaction
from django.contrib.staticfiles.storage import staticfiles_storage
from django.utils.html import escape
from django.utils.functional import cached_property
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import os
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from phonenumber_field.modelfields import PhoneNumberField
from datetime import datetime, timedelta, date
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import unicodedata
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class RealGroupManager(AuthGroupManager):
def get_queryset(self):
return super(RealGroupManager, self).get_queryset().filter(is_meta=False)
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class MetaGroupManager(AuthGroupManager):
def get_queryset(self):
return super(MetaGroupManager, self).get_queryset().filter(is_meta=True)
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class Group(AuthGroup):
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is_meta = models.BooleanField(
_('meta group status'),
default=False,
help_text=_('Whether a group is a meta group or not'),
)
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description = models.CharField(_('description'), max_length=60)
class Meta:
ordering = ['name']
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def get_absolute_url(self):
"""
This is needed for black magic powered UpdateView's children
"""
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return reverse('core:group_list')
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class MetaGroup(Group):
objects = MetaGroupManager()
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class Meta:
proxy = True
def __init__(self, *args, **kwargs):
super(MetaGroup, self).__init__(*args, **kwargs)
self.is_meta = True
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class RealGroup(Group):
objects = RealGroupManager()
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class Meta:
proxy = True
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def validate_promo(value):
start_year = settings.SITH_SCHOOL_START_YEAR
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delta = (date.today() + timedelta(days=180)).year - start_year
if value < 0 or delta < value:
raise ValidationError(
_('%(value)s is not a valid promo (between 0 and %(end)s)'),
params={'value': value, 'end': delta},
)
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class User(AbstractBaseUser):
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"""
Defines the base user class, useable in every app
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This is almost the same as the auth module AbstractUser since it inherits from it,
but some fields are required, and the username is generated automatically with the
name of the user (see generate_username()).
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Added field: nick_name, date_of_birth
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Required fields: email, first_name, last_name, date_of_birth
"""
username = models.CharField(
_('username'),
max_length=254,
unique=True,
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help_text=_('Required. 254 characters or fewer. Letters, digits and ./+/-/_ only.'),
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validators=[
validators.RegexValidator(
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r'^[\w.+-]+$',
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_('Enter a valid username. This value may contain only '
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'letters, numbers ' 'and ./+/-/_ characters.')
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),
],
error_messages={
'unique': _("A user with that username already exists."),
},
)
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first_name = models.CharField(_('first name'), max_length=64)
last_name = models.CharField(_('last name'), max_length=64)
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email = models.EmailField(_('email address'), unique=True)
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date_of_birth = models.DateField(_('date of birth'), blank=True, null=True)
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nick_name = models.CharField(_('nick name'), max_length=64, null=True, blank=True)
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is_staff = models.BooleanField(
_('staff status'),
default=False,
help_text=_('Designates whether the user can log into this admin site.'),
)
is_active = models.BooleanField(
_('active'),
default=True,
help_text=_(
'Designates whether this user should be treated as active. '
'Unselect this instead of deleting accounts.'
),
)
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date_joined = models.DateField(_('date joined'), auto_now_add=True)
last_update = models.DateTimeField(_('last update'), auto_now=True)
is_superuser = models.BooleanField(
_('superuser'),
default=False,
help_text=_(
'Designates whether this user is a superuser. '
),
)
groups = models.ManyToManyField(RealGroup, related_name='users', blank=True)
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home = models.OneToOneField('SithFile', related_name='home_of', verbose_name=_("home"), null=True, blank=True,
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on_delete=models.SET_NULL)
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profile_pict = models.OneToOneField('SithFile', related_name='profile_of', verbose_name=_("profile"), null=True,
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blank=True, on_delete=models.SET_NULL)
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avatar_pict = models.OneToOneField('SithFile', related_name='avatar_of', verbose_name=_("avatar"), null=True,
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blank=True, on_delete=models.SET_NULL)
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scrub_pict = models.OneToOneField('SithFile', related_name='scrub_of', verbose_name=_("scrub"), null=True,
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blank=True, on_delete=models.SET_NULL)
sex = models.CharField(_("sex"), max_length=10, choices=[("MAN", _("Man")), ("WOMAN", _("Woman"))], default="MAN")
tshirt_size = models.CharField(_("tshirt size"), max_length=5, choices=[
("-", _("-")),
("XS", _("XS")),
("S", _("S")),
("M", _("M")),
("L", _("L")),
("XL", _("XL")),
("XXL", _("XXL")),
("XXXL", _("XXXL")),
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], default="-")
role = models.CharField(_("role"), max_length=15, choices=[
("STUDENT", _("Student")),
("ADMINISTRATIVE", _("Administrative agent")),
("TEACHER", _("Teacher")),
("AGENT", _("Agent")),
("DOCTOR", _("Doctor")),
("FORMER STUDENT", _("Former student")),
("SERVICE", _("Service")),
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], blank=True, default="")
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department = models.CharField(_("department"), max_length=15, choices=settings.SITH_PROFILE_DEPARTMENTS,
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default="NA", blank=True)
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dpt_option = models.CharField(_("dpt option"), max_length=32, blank=True, default="")
semester = models.CharField(_("semester"), max_length=5, blank=True, default="")
quote = models.CharField(_("quote"), max_length=256, blank=True, default="")
school = models.CharField(_("school"), max_length=80, blank=True, default="")
promo = models.IntegerField(_("promo"), validators=[validate_promo], null=True, blank=True)
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forum_signature = models.TextField(_("forum signature"), max_length=256, blank=True, default="")
second_email = models.EmailField(_('second email address'), null=True, blank=True)
phone = PhoneNumberField(_("phone"), null=True, blank=True)
parent_phone = PhoneNumberField(_("parent phone"), null=True, blank=True)
address = models.CharField(_("address"), max_length=128, blank=True, default="")
parent_address = models.CharField(_("parent address"), max_length=128, blank=True, default="")
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is_subscriber_viewable = models.BooleanField(_("is subscriber viewable"), default=True)
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godfathers = models.ManyToManyField('User', related_name='godchildren', blank=True)
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objects = UserManager()
USERNAME_FIELD = 'username'
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# REQUIRED_FIELDS = ['email']
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def has_module_perms(self, package_name):
return self.is_active
def has_perm(self, perm, obj=None):
return self.is_active and self.is_superuser
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def get_absolute_url(self):
"""
This is needed for black magic powered UpdateView's children
"""
return reverse('core:user_profile', kwargs={'user_id': self.pk})
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def __str__(self):
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return self.get_display_name()
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def to_dict(self):
return self.__dict__
@cached_property
def was_subscribed(self):
return self.subscriptions.exists()
@cached_property
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def is_subscribed(self):
s = self.subscriptions.filter(subscription_start__lte=timezone.now(), subscription_end__gte=timezone.now())
return s.exists()
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_club_memberships = {}
_group_names = {}
_group_ids = {}
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def is_in_group(self, group_name):
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"""If the user is in the group passed in argument (as string or by id)"""
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group_id = 0
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g = None
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if isinstance(group_name, int): # Handle the case where group_name is an ID
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if group_name in User._group_ids.keys():
g = User._group_ids[group_name]
else:
g = Group.objects.filter(id=group_name).first()
User._group_ids[group_name] = g
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else:
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if group_name in User._group_names.keys():
g = User._group_names[group_name]
else:
g = Group.objects.filter(name=group_name).first()
User._group_names[group_name] = g
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if g:
group_name = g.name
group_id = g.id
else:
return False
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if group_id == settings.SITH_GROUP_PUBLIC_ID:
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return True
if group_id == settings.SITH_GROUP_SUBSCRIBERS_ID:
return self.is_subscribed
if group_id == settings.SITH_GROUP_OLD_SUBSCRIBERS_ID:
return self.was_subscribed
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if group_name == settings.SITH_MAIN_MEMBERS_GROUP: # We check the subscription if asked
return self.is_subscribed
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if group_name[-len(settings.SITH_BOARD_SUFFIX):] == settings.SITH_BOARD_SUFFIX:
name = group_name[:-len(settings.SITH_BOARD_SUFFIX)]
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if name in User._club_memberships.keys():
mem = User._club_memberships[name]
else:
from club.models import Club
c = Club.objects.filter(unix_name=name).first()
mem = c.get_membership_for(self)
User._club_memberships[name] = mem
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if mem:
return mem.role > settings.SITH_MAXIMUM_FREE_ROLE
return False
if group_name[-len(settings.SITH_MEMBER_SUFFIX):] == settings.SITH_MEMBER_SUFFIX:
name = group_name[:-len(settings.SITH_MEMBER_SUFFIX)]
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if name in User._club_memberships.keys():
mem = User._club_memberships[name]
else:
from club.models import Club
c = Club.objects.filter(unix_name=name).first()
mem = c.get_membership_for(self)
User._club_memberships[name] = mem
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if mem:
return True
return False
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if group_id == settings.SITH_GROUP_ROOT_ID and self.is_superuser:
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return True
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return self.groups.filter(name=group_name).exists()
@cached_property
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def is_root(self):
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return self.is_superuser or self.groups.filter(id=settings.SITH_GROUP_ROOT_ID).exists()
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@cached_property
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def is_board_member(self):
from club.models import Club
return Club.objects.filter(unix_name=settings.SITH_MAIN_CLUB['unix_name']).first().has_rights_in_club(self)
@cached_property
def can_create_subscription(self):
from club.models import Club
for club in Club.objects.filter(id__in=settings.SITH_CAN_CREATE_SUBSCRIPTIONS).all():
if club.has_rights_in_club(self):
return True
return False
@cached_property
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def is_launderette_manager(self):
from club.models import Club
return Club.objects.filter(unix_name=settings.SITH_LAUNDERETTE_MANAGER['unix_name']).first().get_membership_for(self)
@cached_property
def is_banned_alcohol(self):
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return self.is_in_group(settings.SITH_GROUP_BANNED_ALCOHOL_ID)
@cached_property
def is_banned_counter(self):
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return self.is_in_group(settings.SITH_GROUP_BANNED_COUNTER_ID)
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def save(self, *args, **kwargs):
create = False
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with transaction.atomic():
if self.id:
old = User.objects.filter(id=self.id).first()
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if old and old.username != self.username:
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self._change_username(self.username)
else:
create = True
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super(User, self).save(*args, **kwargs)
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if create and settings.IS_OLD_MYSQL_PRESENT: # Create user on the old site: TODO remove me!
import MySQLdb
try:
db = MySQLdb.connect(**settings.OLD_MYSQL_INFOS)
c = db.cursor()
c.execute("""INSERT INTO utilisateurs (id_utilisateur, nom_utl, prenom_utl, email_utl, hash_utl, ae_utl) VALUES
(%s, %s, %s, %s, %s, %s)""", (self.id, self.last_name, self.first_name, self.email, "valid", "0"))
db.commit()
except Exception as e:
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with open(settings.BASE_DIR + "/user_fail.log", "a") as f:
print("FAIL to add user %s (%s %s - %s) to old site" % (self.id, self.first_name, self.last_name,
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self.email), file=f)
print("Reason: %s" % (repr(e)), file=f)
db.rollback()
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def make_home(self):
if self.home is None:
home_root = SithFile.objects.filter(parent=None, name="users").first()
if home_root is not None:
home = SithFile(parent=home_root, name=self.username, owner=self)
home.save()
self.home = home
self.save()
def _change_username(self, new_name):
u = User.objects.filter(username=new_name).first()
if u is None:
if self.home:
self.home.name = new_name
self.home.save()
else:
raise ValidationError(_("A user with that username already exists"))
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def get_profile(self):
return {
"last_name": self.last_name,
"first_name": self.first_name,
"nick_name": self.nick_name,
"date_of_birth": self.date_of_birth,
}
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def get_full_name(self):
"""
Returns the first_name plus the last_name, with a space in between.
"""
full_name = '%s %s' % (self.first_name, self.last_name)
return full_name.strip()
def get_short_name(self):
"Returns the short name for the user."
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if self.nick_name:
return self.nick_name
return self.first_name + " " + self.last_name
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def get_display_name(self):
"""
Returns the display name of the user.
A nickname if possible, otherwise, the full name
"""
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if self.nick_name:
return "%s (%s)" % (self.get_full_name(), self.nick_name)
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return self.get_full_name()
def get_age(self):
"""
Returns the age
"""
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today = timezone.now()
born = self.date_of_birth
return today.year - born.year - ((today.month, today.day) < (born.month, born.day))
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def email_user(self, subject, message, from_email=None, **kwargs):
"""
Sends an email to this User.
"""
if from_email is None:
from_email = settings.DEFAULT_FROM_EMAIL
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send_mail(subject, message, from_email, [self.email], **kwargs)
def generate_username(self):
"""
Generates a unique username based on the first and last names.
For example: Guy Carlier gives gcarlier, and gcarlier1 if the first one exists
Returns the generated username
"""
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def remove_accents(data):
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return ''.join(x for x in unicodedata.normalize('NFKD', data) if
unicodedata.category(x)[0] == 'L').lower()
user_name = remove_accents(self.first_name[0] + self.last_name).encode('ascii', 'ignore').decode('utf-8')
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un_set = [u.username for u in User.objects.all()]
if user_name in un_set:
i = 1
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while user_name + str(i) in un_set:
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i += 1
user_name += str(i)
self.username = user_name
return user_name
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def is_owner(self, obj):
"""
Determine if the object is owned by the user
"""
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if hasattr(obj, "is_owned_by") and obj.is_owned_by(self):
return True
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if hasattr(obj, "owner_group") and self.is_in_group(obj.owner_group.name):
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return True
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if self.is_superuser or self.is_in_group(settings.SITH_GROUP_ROOT_ID):
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return True
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return False
def can_edit(self, obj):
"""
Determine if the object can be edited by the user
"""
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if hasattr(obj, "can_be_edited_by") and obj.can_be_edited_by(self):
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return True
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if hasattr(obj, "edit_groups"):
for g in obj.edit_groups.all():
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if self.is_in_group(g.name):
return True
if isinstance(obj, User) and obj == self:
return True
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if self.is_owner(obj):
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return True
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return False
def can_view(self, obj):
"""
Determine if the object can be viewed by the user
"""
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if hasattr(obj, "can_be_viewed_by") and obj.can_be_viewed_by(self):
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return True
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if hasattr(obj, "view_groups"):
for g in obj.view_groups.all():
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if self.is_in_group(g.name):
return True
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if self.can_edit(obj):
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return True
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return False
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def can_be_edited_by(self, user):
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return user.is_in_group(settings.SITH_MAIN_BOARD_GROUP) or user.is_root
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def can_be_viewed_by(self, user):
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return (user.was_subscribed and self.is_subscriber_viewable) or user.is_root
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def get_mini_item(self):
return """
<div class="mini_profile_link" >
<span>
<img src="%s" alt="%s" />
</span>
<em>%s</em>
</a>
""" % (
self.profile_pict.get_download_url() if self.profile_pict else staticfiles_storage.url("core/img/unknown.jpg"),
_("Profile"),
escape(self.get_display_name()),
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)
@cached_property
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def subscribed(self):
return self.is_in_group(settings.SITH_MAIN_MEMBERS_GROUP)
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@cached_property
def preferences(self):
try:
return self._preferences
except:
prefs = Preferences(user=self)
prefs.save()
return prefs
@cached_property
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def forum_infos(self):
try:
return self._forum_infos
except:
from forum.models import ForumUserInfo
infos = ForumUserInfo(user=self)
infos.save()
return infos
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class AnonymousUser(AuthAnonymousUser):
def __init__(self, request):
super(AnonymousUser, self).__init__()
@property
def can_create_subscription(self):
return False
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@property
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def was_subscribed(self):
return False
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@property
def subscribed(self):
return False
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@property
def is_root(self):
return False
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@property
def is_board_member(self):
return False
@property
def is_launderette_manager(self):
return False
@property
def is_banned_alcohol(self):
return False
@property
def is_banned_counter(self):
return False
@property
def forum_infos(self):
raise PermissionDenied
def is_in_group(self, group_name):
"""
The anonymous user is only the public group
"""
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group_id = 0
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if isinstance(group_name, int): # Handle the case where group_name is an ID
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g = Group.objects.filter(id=group_name).first()
if g:
group_name = g.name
group_id = g.id
else:
return False
if group_id == settings.SITH_GROUP_PUBLIC_ID:
return True
return False
def is_owner(self, obj):
return False
def can_edit(self, obj):
return False
def can_view(self, obj):
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if hasattr(obj, 'view_groups') and obj.view_groups.filter(id=settings.SITH_GROUP_PUBLIC_ID).exists():
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return True
if hasattr(obj, 'can_be_viewed_by') and obj.can_be_viewed_by(self):
return True
return False
def get_display_name(self):
return _("Visitor")
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class Preferences(models.Model):
user = models.OneToOneField(User, related_name="_preferences")
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receive_weekmail = models.BooleanField(
_('do you want to receive the weekmail'),
default=False,
)
show_my_stats = models.BooleanField(
_('show your stats to others'),
default=False,
)
notify_on_click = models.BooleanField(
_('get a notification for every click'),
default=False,
)
notify_on_refill = models.BooleanField(
_('get a notification for every refilling'),
default=False,
)
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def get_display_name(self):
return self.user.get_display_name()
def get_absolute_url(self):
return self.user.get_absolute_url()
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def get_directory(instance, filename):
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return '.{0}/{1}'.format(instance.get_parent_path(), filename)
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def get_compressed_directory(instance, filename):
return '.{0}/compressed/{1}'.format(instance.get_parent_path(), filename)
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def get_thumbnail_directory(instance, filename):
return '.{0}/thumbnail/{1}'.format(instance.get_parent_path(), filename)
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class SithFile(models.Model):
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name = models.CharField(_('file name'), max_length=256, blank=False)
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parent = models.ForeignKey('self', related_name="children", verbose_name=_("parent"), null=True, blank=True)
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file = models.FileField(upload_to=get_directory, verbose_name=_("file"), max_length=256, null=True, blank=True)
compressed = models.FileField(upload_to=get_compressed_directory, verbose_name=_("compressed file"), max_length=256, null=True, blank=True)
thumbnail = models.FileField(upload_to=get_thumbnail_directory, verbose_name=_("thumbnail"), max_length=256, null=True, blank=True)
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owner = models.ForeignKey(User, related_name="owned_files", verbose_name=_("owner"))
edit_groups = models.ManyToManyField(Group, related_name="editable_files", verbose_name=_("edit group"), blank=True)
view_groups = models.ManyToManyField(Group, related_name="viewable_files", verbose_name=_("view group"), blank=True)
is_folder = models.BooleanField(_("is folder"), default=True)
mime_type = models.CharField(_('mime type'), max_length=30)
size = models.IntegerField(_("size"), default=0)
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date = models.DateTimeField(_('date'), default=timezone.now)
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is_moderated = models.BooleanField(_("is moderated"), default=False)
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moderator = models.ForeignKey(User, related_name="moderated_files", verbose_name=_("owner"), null=True, blank=True)
asked_for_removal = models.BooleanField(_("asked for removal"), default=False)
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is_in_sas = models.BooleanField(_("is in the SAS"), default=False) # Allows to query this flag, updated at each call to save()
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class Meta:
verbose_name = _("file")
def is_owned_by(self, user):
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if hasattr(self, 'profile_of') and user.is_in_group(settings.SITH_MAIN_BOARD_GROUP):
return True
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if user.is_in_group(settings.SITH_GROUP_COM_ADMIN_ID):
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return True
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if self.is_in_sas and user.is_in_group(settings.SITH_GROUP_SAS_ADMIN_ID):
return True
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return user.id == self.owner.id
def can_be_viewed_by(self, user):
if hasattr(self, 'profile_of'):
return user.can_view(self.profile_of)
if hasattr(self, 'avatar_of'):
return user.can_view(self.avatar_of)
if hasattr(self, 'scrub_of'):
return user.can_view(self.scrub_of)
return False
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def delete(self):
for c in self.children.all():
c.delete()
self.file.delete()
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if self.compressed:
self.compressed.delete()
if self.thumbnail:
self.thumbnail.delete()
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return super(SithFile, self).delete()
def clean(self):
"""
Cleans up the file
"""
super(SithFile, self).clean()
if '/' in self.name:
raise ValidationError(_("Character '/' not authorized in name"))
if self == self.parent:
raise ValidationError(
_('Loop in folder tree'),
code='loop',
)
if (self == self.parent or (self.parent is not None and self in self.get_parent_list())):
raise ValidationError(
_('Loop in folder tree'),
code='loop',
)
if self.parent and self.parent.is_file:
raise ValidationError(_('You can not make a file be a children of a non folder file'))
if ((self.parent is None and SithFile.objects.exclude(id=self.id).filter(parent=None, name=self.name).exists()) or
(self.parent and self.parent.children.exclude(id=self.id).filter(name=self.name).exists())):
raise ValidationError(
_('Duplicate file'),
code='duplicate',
)
if self.is_folder:
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if self.file:
try:
import imghdr
if imghdr.what(None, self.file.read()) not in ['gif', 'png', 'jpeg']:
self.file.delete()
self.file = None
except:
self.file = None
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self.mime_type = "inode/directory"
if self.is_file and (self.file is None or self.file == ""):
raise ValidationError(_("You must provide a file"))
def save(self, *args, **kwargs):
sas = SithFile.objects.filter(id=settings.SITH_SAS_ROOT_DIR_ID).first()
self.is_in_sas = sas in self.get_parent_list()
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copy_rights = False
if self.id is None:
copy_rights = True
super(SithFile, self).save(*args, **kwargs)
if copy_rights:
self.copy_rights()
if self.is_in_sas:
for u in RealGroup.objects.filter(id=settings.SITH_GROUP_SAS_ADMIN_ID).first().users.all():
Notification(user=u, url=reverse("sas:moderation"),
type="SAS_MODERATION", param="1").save()
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def apply_rights_recursively(self, only_folders=False):
children = self.children.all()
if only_folders:
children = children.filter(is_folder=True)
for c in children:
c.copy_rights()
c.apply_rights_recursively(only_folders)
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def copy_rights(self):
"""Copy, if possible, the rights of the parent folder"""
if self.parent is not None:
self.edit_groups = self.parent.edit_groups.all()
self.view_groups = self.parent.view_groups.all()
self.save()
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def move_to(self, parent):
"""Move a file to somewhere else"""
if not parent.is_folder:
return
import shutil
import os
with transaction.atomic():
if self.is_folder:
old_file_name = self.get_full_path()
else:
old_file_name = self.file.name
self.parent = parent
self.save()
if self.is_folder:
for c in self.children.all():
c.move_to(self)
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shutil.rmtree(os.path.join(settings.MEDIA_ROOT, old_file_name))
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else:
self.file.save(name=self.name, content=self.file)
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os.remove(os.path.join(settings.MEDIA_ROOT, old_file_name))
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def __getattribute__(self, attr):
if attr == "is_file":
return not self.is_folder
else:
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return super(SithFile, self).__getattribute__(attr)
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@cached_property
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def as_picture(self):
from sas.models import Picture
return Picture.objects.filter(id=self.id).first()
@cached_property
def as_album(self):
from sas.models import Album
return Album.objects.filter(id=self.id).first()
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def __str__(self):
if self.is_folder:
return _("Folder: ") + self.name
else:
return _("File: ") + self.name
def get_parent_list(self):
l = []
p = self.parent
while p is not None:
l.append(p)
p = p.parent
return l
def get_parent_path(self):
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return '/' + '/'.join([p.name for p in self.get_parent_list()[::-1]])
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def get_full_path(self):
return self.get_parent_path() + '/' + self.name
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def get_display_name(self):
return self.name
def get_download_url(self):
return reverse('core:download', kwargs={'file_id': self.id})
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def __str__(self):
return self.get_parent_path() + "/" + self.name
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class LockError(Exception):
"""There was a lock error on the object"""
pass
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class AlreadyLocked(LockError):
"""The object is already locked"""
pass
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class NotLocked(LockError):
"""The object is not locked"""
pass
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class Page(models.Model):
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"""
The page class to build a Wiki
Each page may have a parent and it's URL is of the form my.site/page/<grd_pa>/<parent>/<mypage>
It has an ID field, but don't use it, since it's only there for DB part, and because compound primary key is
awkward!
Prefere querying pages with Page.get_page_by_full_name()
Be careful with the _full_name attribute: this field may not be valid until you call save(). It's made for fast
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query, but don't rely on it when playing with a Page object, use get_full_name() instead!
"""
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name = models.CharField(_('page unix name'), max_length=30,
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validators=[
validators.RegexValidator(
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r'^[a-zA-Z0-9][a-zA-Z0-9._-]*[a-zA-Z0-9]$',
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_('Enter a valid page name. This value may contain only '
'unaccented letters, numbers ' 'and ./+/-/_ characters.')
), ],
blank=False)
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parent = models.ForeignKey('self', related_name="children", verbose_name=_("parent"), null=True, blank=True, on_delete=models.SET_NULL)
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# Attention: this field may not be valid until you call save(). It's made for fast query, but don't rely on it when
# playing with a Page object, use get_full_name() instead!
_full_name = models.CharField(_('page name'), max_length=255, blank=True)
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owner_group = models.ForeignKey(Group, related_name="owned_page", verbose_name=_("owner group"),
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default=settings.SITH_GROUP_ROOT_ID)
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edit_groups = models.ManyToManyField(Group, related_name="editable_page", verbose_name=_("edit group"), blank=True)
view_groups = models.ManyToManyField(Group, related_name="viewable_page", verbose_name=_("view group"), blank=True)
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lock_user = models.ForeignKey(User, related_name="locked_pages", verbose_name=_("lock user"), blank=True, null=True, default=None)
lock_timeout = models.DateTimeField(_('lock_timeout'), null=True, blank=True, default=None)
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class Meta:
unique_together = ('name', 'parent')
permissions = (
("change_prop_page", "Can change the page's properties (groups, ...)"),
("view_page", "Can view the page"),
)
@staticmethod
def get_page_by_full_name(name):
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"""
Quicker to get a page with that method rather than building the request every time
"""
return Page.objects.filter(_full_name=name).first()
def __init__(self, *args, **kwargs):
super(Page, self).__init__(*args, **kwargs)
def clean(self):
"""
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Cleans up only the name for the moment, but this can be used to make any treatment before saving the object
"""
if '/' in self.name:
self.name = self.name.split('/')[-1]
if Page.objects.exclude(pk=self.pk).filter(_full_name=self.get_full_name()).exists():
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raise ValidationError(
_('Duplicate page'),
code='duplicate',
)
super(Page, self).clean()
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if self.parent is not None and self in self.get_parent_list():
raise ValidationError(
_('Loop in page tree'),
code='loop',
)
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def can_be_edited_by(self, user):
if hasattr(self, 'club') and self.club.can_be_edited_by(user):
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# Override normal behavior for clubs
return True
if self.name == settings.SITH_CLUB_ROOT_PAGE and user.is_board_member:
return True
return False
def can_be_viewed_by(self, user):
if self.is_club_page:
return True
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return False
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def get_parent_list(self):
l = []
p = self.parent
while p is not None:
l.append(p)
p = p.parent
return l
def save(self, *args, **kwargs):
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"""
Performs some needed actions before and after saving a page in database
"""
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locked = kwargs.pop('force_lock', False)
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if not locked:
locked = self.is_locked()
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if not locked:
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raise NotLocked("The page is not locked and thus can not be saved")
self.full_clean()
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if not self.id:
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super(Page, self).save(*args, **kwargs) # Save a first time to correctly set _full_name
# This reset the _full_name just before saving to maintain a coherent field quicker for queries than the
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# recursive method
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# It also update all the children to maintain correct names
self._full_name = self.get_full_name()
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for c in self.children.all():
c.save()
super(Page, self).save(*args, **kwargs)
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self.unset_lock()
def is_locked(self):
"""
Is True if the page is locked, False otherwise
This is where the timeout is handled, so a locked page for which the timeout is reach will be unlocked and this
function will return False
"""
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if self.lock_timeout and (timezone.now() - self.lock_timeout > timedelta(minutes=5)):
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# print("Lock timed out")
self.unset_lock()
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return self.lock_user and self.lock_timeout and (timezone.now() - self.lock_timeout < timedelta(minutes=5))
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def set_lock(self, user):
"""
Sets a lock on the current page or raise an AlreadyLocked exception
"""
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if self.is_locked() and self.get_lock() != user:
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raise AlreadyLocked("The page is already locked by someone else")
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self.lock_user = user
self.lock_timeout = timezone.now()
super(Page, self).save()
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# print("Locking page")
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def set_lock_recursive(self, user):
"""
Locks recursively all the child pages for editing properties
"""
for p in self.children.all():
p.set_lock_recursive(user)
self.set_lock(user)
def unset_lock_recursive(self):
"""
Unlocks recursively all the child pages
"""
for p in self.children.all():
p.unset_lock_recursive()
self.unset_lock()
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def unset_lock(self):
"""Always try to unlock, even if there is no lock"""
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self.lock_user = None
self.lock_timeout = None
super(Page, self).save()
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# print("Unlocking page")
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def get_lock(self):
"""
Returns the page's mutex containing the time and the user in a dict
"""
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if self.lock_user:
return self.lock_user
raise NotLocked("The page is not locked and thus can not return its user")
def get_absolute_url(self):
"""
This is needed for black magic powered UpdateView's children
"""
return reverse('core:page', kwargs={'page_name': self._full_name})
def __str__(self):
return self.get_full_name()
def get_full_name(self):
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"""
Computes the real full_name of the page based on its name and its parent's name
You can and must rely on this function when working on a page object that is not freshly fetched from the DB
(For example when treating a Page object coming from a form)
"""
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if self.parent is None:
return self.name
return '/'.join([self.parent.get_full_name(), self.name])
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def get_display_name(self):
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try:
return self.revisions.last().title
except:
return self.name
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@cached_property
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def is_club_page(self):
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club_root_page = Page.objects.filter(name=settings.SITH_CLUB_ROOT_PAGE).first()
return club_root_page is not None and (self == club_root_page or club_root_page in self.get_parent_list())
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@cached_property
def need_club_redirection(self):
return self.is_club_page and self.name != settings.SITH_CLUB_ROOT_PAGE
def delete(self):
self.unset_lock_recursive()
self.set_lock_recursive(User.objects.get(id=0))
for child in self.children.all():
child.parent = self.parent
child.save()
child.unset_lock_recursive()
super(Page, self).delete()
class PageRev(models.Model):
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"""
This is the true content of the page.
Each page object has a revisions field that is a list of PageRev, ordered by date.
my_page.revisions.last() gives the PageRev object that is the most up-to-date, and thus,
is the real content of the page.
The content is in PageRev.title and PageRev.content .
"""
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revision = models.IntegerField(_("revision"))
title = models.CharField(_("page title"), max_length=255, blank=True)
content = models.TextField(_("page content"), blank=True)
date = models.DateTimeField(_('date'), auto_now=True)
author = models.ForeignKey(User, related_name='page_rev')
page = models.ForeignKey(Page, related_name='revisions')
class Meta:
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ordering = ['date', ]
def get_absolute_url(self):
"""
This is needed for black magic powered UpdateView's children
"""
return reverse('core:page', kwargs={'page_name': self.page._full_name})
def __str__(self):
return str(self.__dict__)
def __getattribute__(self, attr):
if attr == "owner_group":
return self.page.owner_group
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elif attr == "edit_groups":
return self.page.edit_groups
elif attr == "view_groups":
return self.page.view_groups
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elif attr == "unset_lock":
return self.page.unset_lock
else:
return object.__getattribute__(self, attr)
def can_be_edited_by(self, user):
return self.page.can_be_edited_by(user)
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def save(self, *args, **kwargs):
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if self.revision is None:
self.revision = self.page.revisions.all().count() + 1
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super(PageRev, self).save(*args, **kwargs)
# Don't forget to unlock, otherwise, people will have to wait for the page's timeout
self.page.unset_lock()
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class Notification(models.Model):
user = models.ForeignKey(User, related_name='notifications')
url = models.CharField(_("url"), max_length=255)
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param = models.CharField(_("param"), max_length=128, default="")
type = models.CharField(_("type"), max_length=32, choices=settings.SITH_NOTIFICATIONS, default="GENERIC")
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date = models.DateTimeField(_('date'), default=timezone.now)
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viewed = models.BooleanField(_('viewed'), default=False)
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def __str__(self):
if self.param:
return self.get_type_display() % self.param
return self.get_type_display()
def callback(self):
# Get the callback defined in settings to update existing
# notifications
mod_name, func_name = settings.SITH_PERMANENT_NOTIFICATIONS[self.type].rsplit('.',1)
mod = importlib.import_module(mod_name)
getattr(mod, func_name)(self)
def save(self, *args, **kwargs):
if not self.id and self.type in settings.SITH_PERMANENT_NOTIFICATIONS:
old_notif = self.user.notifications.filter(type=self.type).last()
if old_notif:
old_notif.callback()
old_notif.save()
return
super(Notification, self).save(*args, **kwargs)
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class Gift(models.Model):
label = models.CharField(_('label'), max_length=255)
date = models.DateTimeField(_('date'), default=timezone.now)
user = models.ForeignKey(User, related_name='gifts')
def __str__(self):
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return "%s - %s" % (self.translated_label, self.date.strftime('%d %b %Y'))
@property
def translated_label(self):
translations = [label[1] for label in settings.SITH_GIFT_LIST if label[0] == self.label]
if len(translations) > 0:
return translations[0]
return self.label
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def is_owned_by(self, user):
return user.is_board_member or user.is_root