Sith/core/models.py

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# -*- coding:utf-8 -*
#
# Copyright 2016,2017,2018
# - 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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import os
import unicodedata
from datetime import date, timedelta
from typing import List, Optional, Union
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from django.conf import settings
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from django.contrib.auth.models import (
AbstractBaseUser,
UserManager,
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)
from django.contrib.auth.models import (
AnonymousUser as AuthAnonymousUser,
)
from django.contrib.auth.models import (
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Group as AuthGroup,
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)
from django.contrib.auth.models import (
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GroupManager as AuthGroupManager,
)
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from django.contrib.staticfiles.storage import staticfiles_storage
from django.core import validators
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from django.core.cache import cache
from django.core.exceptions import PermissionDenied, ValidationError
from django.core.mail import send_mail
from django.db import models, transaction
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from django.urls import reverse
from django.utils import timezone
from django.utils.functional import cached_property
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from django.utils.html import escape
from django.utils.translation import gettext_lazy as _
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from phonenumber_field.modelfields import PhoneNumberField
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from core import utils
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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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"""
Implement both RealGroups and Meta groups
Groups are sorted by their is_meta property
"""
#: If False, this is a RealGroup
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is_meta = models.BooleanField(
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_("meta group status"),
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default=False,
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help_text=_("Whether a group is a meta group or not"),
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)
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#: Description of the group
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description = models.CharField(_("description"), max_length=60)
class Meta:
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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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def save(self, *args, **kwargs):
super().save(*args, **kwargs)
cache.set(f"sith_group_{self.id}", self)
cache.set(f"sith_group_{self.name.replace(' ', '_')}", self)
def delete(self, *args, **kwargs):
super().delete(*args, **kwargs)
cache.delete(f"sith_group_{self.id}")
cache.delete(f"sith_group_{self.name.replace(' ', '_')}")
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class MetaGroup(Group):
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"""
MetaGroups are dynamically created groups.
Generally used with clubs where creating a club creates two groups:
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* club-SITH_BOARD_SUFFIX
* club-SITH_MEMBER_SUFFIX
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"""
#: Assign a manager in a way that MetaGroup.objects only return groups with is_meta=False
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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
@cached_property
def associated_club(self):
"""
Return the group associated with this meta group
The result of this function is cached
:return: The associated club if it exists, else None
:rtype: club.models.Club | None
"""
from club.models import Club
if self.name.endswith(settings.SITH_BOARD_SUFFIX):
# replace this with str.removesuffix as soon as Python
# is upgraded to 3.10
club_name = self.name[: -len(settings.SITH_BOARD_SUFFIX)]
elif self.name.endswith(settings.SITH_MEMBER_SUFFIX):
club_name = self.name[: -len(settings.SITH_MEMBER_SUFFIX)]
else:
return None
club = cache.get(f"sith_club_{club_name}")
if club is None:
club = Club.objects.filter(unix_name=club_name).first()
cache.set(f"sith_club_{club_name}", club)
return club
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class RealGroup(Group):
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"""
RealGroups are created by the developer.
Most of the time they match a number in settings to be easily used for permissions.
"""
#: Assign a manager in a way that MetaGroup.objects only return groups with is_meta=True
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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(
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_("%(value)s is not a valid promo (between 0 and %(end)s)"),
params={"value": value, "end": delta},
)
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def get_group(*, pk: int = None, name: str = None) -> Optional[Group]:
"""
Search for a group by its primary key or its name.
Either one of the two must be set.
The result is cached for the default duration (should be 5 minutes).
:param pk: The primary key of the group
:param name: The name of the group
:return: The group if it exists, else None
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:raise ValueError: If no group matches the criteria
"""
if pk is None and name is None:
raise ValueError("Either pk or name must be set")
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# replace space characters to hide warnings with memcached backend
pk_or_name: Union[str, int] = pk if pk is not None else name.replace(" ", "_")
group = cache.get(f"sith_group_{pk_or_name}")
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if group == "not_found":
# Using None as a cache value is a little bit tricky,
# so we use a special string to represent None
return None
elif group is not None:
return group
# if this point is reached, the group is not in cache
if pk is not None:
group = Group.objects.filter(pk=pk).first()
else:
group = Group.objects.filter(name=name).first()
if group is not None:
cache.set(f"sith_group_{group.id}", group)
cache.set(f"sith_group_{group.name.replace(' ', '_')}", group)
else:
cache.set(f"sith_group_{pk_or_name}", "not_found")
return group
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
"""
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username = models.CharField(
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_("username"),
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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.+-]+$",
_(
"Enter a valid username. This value may contain only "
"letters, numbers "
"and ./+/-/_ characters."
),
)
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],
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error_messages={"unique": _("A user with that username already exists.")},
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)
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first_name = models.CharField(_("first name"), max_length=64)
last_name = models.CharField(_("last name"), max_length=64)
email = models.EmailField(_("email address"), unique=True)
date_of_birth = models.DateField(_("date of birth"), blank=True, null=True)
nick_name = models.CharField(_("nick name"), max_length=64, null=True, blank=True)
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is_staff = models.BooleanField(
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_("staff status"),
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default=False,
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help_text=_("Designates whether the user can log into this admin site."),
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)
is_active = models.BooleanField(
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_("active"),
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default=True,
help_text=_(
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"Designates whether this user should be treated as active. "
"Unselect this instead of deleting accounts."
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),
)
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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(
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_("superuser"),
default=False,
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help_text=_("Designates whether this user is a superuser. "),
)
groups = models.ManyToManyField(RealGroup, related_name="users", blank=True)
home = models.OneToOneField(
"SithFile",
related_name="home_of",
verbose_name=_("home"),
null=True,
blank=True,
on_delete=models.SET_NULL,
)
profile_pict = models.OneToOneField(
"SithFile",
related_name="profile_of",
verbose_name=_("profile"),
null=True,
blank=True,
on_delete=models.SET_NULL,
)
avatar_pict = models.OneToOneField(
"SithFile",
related_name="avatar_of",
verbose_name=_("avatar"),
null=True,
blank=True,
on_delete=models.SET_NULL,
)
scrub_pict = models.OneToOneField(
"SithFile",
related_name="scrub_of",
verbose_name=_("scrub"),
null=True,
blank=True,
on_delete=models.SET_NULL,
)
sex = models.CharField(
_("sex"),
max_length=10,
null=True,
blank=True,
choices=[("MAN", _("Man")), ("WOMAN", _("Woman")), ("OTHER", _("Other"))],
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)
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pronouns = models.CharField(_("pronouns"), max_length=64, blank=True, default="")
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tshirt_size = models.CharField(
_("tshirt size"),
max_length=5,
choices=[
("-", _("-")),
("XS", _("XS")),
("S", _("S")),
("M", _("M")),
("L", _("L")),
("XL", _("XL")),
("XXL", _("XXL")),
("XXXL", _("XXXL")),
],
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")),
],
blank=True,
default="",
)
department = models.CharField(
_("department"),
max_length=15,
choices=settings.SITH_PROFILE_DEPARTMENTS,
default="NA",
blank=True,
)
dpt_option = models.CharField(
_("dpt option"), max_length=32, blank=True, default=""
)
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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="")
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promo = models.IntegerField(
_("promo"), validators=[validate_promo], null=True, blank=True
)
forum_signature = models.TextField(
_("forum signature"), max_length=256, blank=True, default=""
)
second_email = models.EmailField(_("second email address"), null=True, blank=True)
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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="")
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parent_address = models.CharField(
_("parent address"), max_length=128, blank=True, default=""
)
is_subscriber_viewable = models.BooleanField(
_("is subscriber viewable"), default=True
)
godfathers = models.ManyToManyField("User", related_name="godchildren", blank=True)
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objects = UserManager()
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USERNAME_FIELD = "username"
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def promo_has_logo(self):
return utils.file_exist("./core/static/core/img/promo_%02d.png" % self.promo)
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
"""
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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):
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s = self.subscriptions.filter(
subscription_start__lte=timezone.now(), subscription_end__gte=timezone.now()
)
return s.exists()
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@cached_property
def account_balance(self):
if hasattr(self, "customer"):
return self.customer.amount
else:
return 0
def is_in_group(self, *, pk: int = None, name: str = None) -> bool:
"""
Check if this user is in the given group.
Either a group id or a group name must be provided.
If both are passed, only the id will be considered.
The group will be fetched using the given parameter.
If no group is found, return False.
If a group is found, check if this user is in the latter.
:return: True if the user is the group, else False
"""
if pk is not None:
group: Optional[Group] = get_group(pk=pk)
elif name is not None:
group: Optional[Group] = get_group(name=name)
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else:
raise ValueError("You must either provide the id or the name of the group")
if group is None:
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return False
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
if group.id == settings.SITH_GROUP_ROOT_ID:
return self.is_root
if group.is_meta:
# check if this group is associated with a club
group.__class__ = MetaGroup
club = group.associated_club
if club is None:
return False
membership = club.get_membership_for(self)
if membership is None:
return False
if group.name.endswith(settings.SITH_MEMBER_SUFFIX):
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return True
return membership.role > settings.SITH_MAXIMUM_FREE_ROLE
return group in self.cached_groups
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@property
def cached_groups(self) -> List[Group]:
"""
Get the list of groups this user is in.
The result is cached for the default duration (should be 5 minutes)
:return: A list of all the groups this user is in
"""
groups = cache.get(f"user_{self.id}_groups")
if groups is None:
groups = list(self.groups.all())
cache.set(f"user_{self.id}_groups", groups)
return groups
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@cached_property
def is_root(self) -> bool:
if self.is_superuser:
return True
root_id = settings.SITH_GROUP_ROOT_ID
return any(g.id == root_id for g in self.cached_groups)
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@cached_property
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def is_board_member(self):
main_club = settings.SITH_MAIN_CLUB["unix_name"]
return self.is_in_group(name=main_club + settings.SITH_BOARD_SUFFIX)
@cached_property
def can_read_subscription_history(self):
if self.is_root or self.is_board_member:
return True
from club.models import Club
for club in Club.objects.filter(
id__in=settings.SITH_CAN_READ_SUBSCRIPTION_HISTORY
):
if club in self.clubs_with_rights:
return True
return False
@cached_property
def can_create_subscription(self):
from club.models import Club
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for club in Club.objects.filter(id__in=settings.SITH_CAN_CREATE_SUBSCRIPTIONS):
if club in self.clubs_with_rights:
return True
return False
@cached_property
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def is_launderette_manager(self):
from club.models import Club
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return (
Club.objects.filter(
unix_name=settings.SITH_LAUNDERETTE_MANAGER["unix_name"]
)
.first()
.get_membership_for(self)
)
@cached_property
def is_banned_alcohol(self):
return self.is_in_group(pk=settings.SITH_GROUP_BANNED_ALCOHOL_ID)
@cached_property
def is_banned_counter(self):
return self.is_in_group(pk=settings.SITH_GROUP_BANNED_COUNTER_ID)
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@cached_property
def age(self) -> int:
"""
Return the age this user has the day the method is called.
If the user has not filled his age, return 0
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"""
if self.date_of_birth is None:
return 0
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today = timezone.now()
age = today.year - self.date_of_birth.year
# remove a year if this year's birthday is yet to come
age -= (today.month, today.day) < (
self.date_of_birth.month,
self.date_of_birth.day,
)
return age
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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)
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.
"""
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full_name = "%s %s" % (self.first_name, self.last_name)
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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
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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
if hasattr(obj, "owner_group") and self.is_in_group(pk=obj.owner_group.id):
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return True
if self.is_root:
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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 pk in obj.edit_groups.values_list("pk", flat=True):
if self.is_in_group(pk=pk):
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 pk in obj.view_groups.values_list("pk", flat=True):
if self.is_in_group(pk=pk):
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):
return user.is_root or user.is_board_member
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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
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
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infos = ForumUserInfo(user=self)
infos.save()
return infos
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@cached_property
def clubs_with_rights(self):
"""
:return: the list of clubs where the user has rights
:rtype: list[club.models.Club]
"""
memberships = self.memberships.ongoing().board().select_related("club")
return [m.club for m in memberships]
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@cached_property
def is_com_admin(self):
return self.is_in_group(pk=settings.SITH_GROUP_COM_ADMIN_ID)
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class AnonymousUser(AuthAnonymousUser):
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def __init__(self):
super(AnonymousUser, self).__init__()
@property
def can_create_subscription(self):
return False
@property
def can_read_subscription_history(self):
return False
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@property
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def was_subscribed(self):
return False
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@property
def is_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
@property
def favorite_topics(self):
raise PermissionDenied
def is_in_group(self, *, pk: int = None, name: str = None) -> bool:
"""
The anonymous user is only in the public group
"""
allowed_id = settings.SITH_GROUP_PUBLIC_ID
if pk is not None:
return pk == allowed_id
elif name is not None:
group = get_group(name=name)
return group is not None and group.id == allowed_id
else:
raise ValueError("You must either provide the id or the name of the group")
def is_owner(self, obj):
return False
def can_edit(self, obj):
return False
@property
def is_com_admin(self):
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
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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", on_delete=models.CASCADE
)
receive_weekmail = models.BooleanField(_("receive the Weekmail"), default=False)
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show_my_stats = models.BooleanField(_("show your stats to others"), default=False)
notify_on_click = models.BooleanField(
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_("get a notification for every click"), default=False
)
notify_on_refill = models.BooleanField(
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_("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):
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return "./.compressed/{0}/{1}".format(instance.get_parent_path(), filename)
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def get_thumbnail_directory(instance, filename):
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return "./.thumbnails/{0}/{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)
parent = models.ForeignKey(
"self",
related_name="children",
verbose_name=_("parent"),
null=True,
blank=True,
on_delete=models.CASCADE,
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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,
)
owner = models.ForeignKey(
User,
related_name="owned_files",
verbose_name=_("owner"),
on_delete=models.CASCADE,
)
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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, db_index=True)
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mime_type = models.CharField(_("mime type"), max_length=30)
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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,
on_delete=models.CASCADE,
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)
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, db_index=True
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) # Allows to query this flag, updated at each call to save()
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class Meta:
verbose_name = _("file")
def can_be_managed_by(self, user: User) -> bool:
"""
Tell if the user can manage the file (edit, delete, etc.) or not.
Apply the following rules:
- If the file is not in the SAS nor in the profiles directory, it can be "managed" by anyone -> return True
- If the file is in the SAS, only the SAS admins (or roots) can manage it -> return True if the user is in the SAS admin group or is a root
- If the file is in the profiles directory, only the roots can manage it -> return True if the user is a root
:returns: True if the file is managed by the SAS or within the profiles directory, False otherwise
"""
# If the file is not in the SAS nor in the profiles directory, it can be "managed" by anyone
profiles_dir = SithFile.objects.filter(name="profiles").first()
if not self.is_in_sas and not profiles_dir in self.get_parent_list():
return True
# If the file is in the SAS, only the SAS admins (or roots) can manage it
if self.is_in_sas and (
user.is_in_group(settings.SITH_GROUP_SAS_ADMIN_ID) or user.is_root
):
return True
# If the file is in the profiles directory, only the roots can manage it
if profiles_dir in self.get_parent_list() and (
user.is_root or user.is_board_member
):
return True
return False
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def is_owned_by(self, user):
if user.is_anonymous:
return False
if hasattr(self, "profile_of") and user.is_board_member:
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return True
if user.is_com_admin:
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return True
if self.is_in_sas and user.is_in_group(pk=settings.SITH_GROUP_SAS_ADMIN_ID):
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return True
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return user.id == self.owner.id
def can_be_viewed_by(self, user):
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if hasattr(self, "profile_of"):
return user.can_view(self.profile_of)
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if hasattr(self, "avatar_of"):
return user.can_view(self.avatar_of)
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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()
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if "/" in self.name:
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raise ValidationError(_("Character '/' not authorized in name"))
if self == self.parent:
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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")
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if self.parent and self.parent.is_file:
raise ValidationError(
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_("You can not make a file be a children of a non folder file")
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)
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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")
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if self.is_folder:
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if self.file:
try:
import imghdr
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if imghdr.what(None, self.file.read()) not in [
"gif",
"png",
"jpeg",
]:
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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() or self == sas
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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:
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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.set(self.parent.edit_groups.all())
self.view_groups.set(self.parent.view_groups.all())
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self.save()
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def move_to(self, parent):
"""
Move a file to a new parent.
`parent` must be a SithFile with the `is_folder=True` property. Otherwise, this function doesn't change
anything.
This is done only at the DB level, so that it's very fast for the user. Indeed, this function doesn't modify
SithFiles recursively, so it stays efficient even with top-level folders.
"""
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if not parent.is_folder:
return
self.parent = parent
self.clean()
self.save()
def _repair_fs(self):
"""
This function rebuilds recursively the filesystem as it should be
regarding the DB tree.
"""
if self.is_folder:
for c in self.children.all():
c._repair_fs()
return
elif not self._check_path_consistence():
# First get future parent path and the old file name
# Prepend "." so that we match all relative handling of Django's
# file storage
parent_path = "." + self.parent.get_full_path()
parent_full_path = settings.MEDIA_ROOT + parent_path
print("Parent full path: %s" % parent_full_path)
os.makedirs(parent_full_path, exist_ok=True)
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old_path = self.file.name # Should be relative: "./users/skia/bleh.jpg"
new_path = "." + self.get_full_path()
print("Old path: %s " % old_path)
print("New path: %s " % new_path)
try:
# Make this atomic, so that a FS problem rolls back the DB change
with transaction.atomic():
# Set the new filesystem path
self.file.name = new_path
self.save()
print("New file path: %s " % self.file.path)
# Really move at the FS level
if os.path.exists(parent_full_path):
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os.rename(
settings.MEDIA_ROOT + old_path,
settings.MEDIA_ROOT + new_path,
)
# Empty directories may remain, but that's not really a
# problem, and that can be solved with a simple shell
# command: `find . -type d -empty -delete`
except Exception as e:
print("This file likely had a problem. Here is the exception:")
print(repr(e))
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print("-" * 80)
def _check_path_consistence(self):
file_path = str(self.file)
file_full_path = settings.MEDIA_ROOT + file_path
db_path = ".%s" % self.get_full_path()
if not os.path.exists(file_full_path):
print("%s: WARNING: real file does not exists!" % self.id)
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print("file path: %s" % file_path, end="")
print(" db path: %s" % db_path)
return False
if file_path != db_path:
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print("%s: " % self.id, end="")
print("file path: %s" % file_path, end="")
print(" db path: %s" % db_path)
return False
print("%s OK (%s)" % (self.id, file_path))
return True
def _check_fs(self):
if self.is_folder:
for c in self.children.all():
c._check_fs()
return
else:
self._check_path_consistence()
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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
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return Picture.objects.filter(id=self.id).first()
@cached_property
def as_album(self):
from sas.models import Album
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return Album.objects.filter(id=self.id).first()
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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 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):
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return self.get_parent_path() + "/" + self.name
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def get_display_name(self):
return self.name
def get_download_url(self):
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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"""
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pass
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class AlreadyLocked(LockError):
"""The object is already locked"""
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pass
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class NotLocked(LockError):
"""The object is not locked"""
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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,
validators=[
validators.RegexValidator(
r"^[a-zA-Z0-9][a-zA-Z0-9._-]*[a-zA-Z0-9]$",
_(
"Enter a valid page name. This value may contain only "
"unaccented letters, numbers "
"and ./+/-/_ characters."
),
)
],
blank=False,
)
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!
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_full_name = models.CharField(_("page name"), max_length=255, blank=True)
# This function prevents generating migration upon settings change
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def get_default_owner_group():
return settings.SITH_GROUP_ROOT_ID
owner_group = models.ForeignKey(
Group,
related_name="owned_page",
verbose_name=_("owner group"),
default=get_default_owner_group,
on_delete=models.CASCADE,
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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
)
lock_user = models.ForeignKey(
User,
related_name="locked_pages",
verbose_name=_("lock user"),
blank=True,
null=True,
default=None,
on_delete=models.CASCADE,
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)
lock_timeout = models.DateTimeField(
_("lock_timeout"), null=True, blank=True, default=None
)
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class Meta:
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unique_together = ("name", "parent")
permissions = (
("change_prop_page", "Can change the page's properties (groups, ...)"),
)
@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
"""
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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()
):
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():
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raise ValidationError(_("Loop in page tree"), code="loop")
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def can_be_edited_by(self, user):
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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
"""
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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
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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()
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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)
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date = models.DateTimeField(_("date"), auto_now=True)
author = models.ForeignKey(User, related_name="page_rev", on_delete=models.CASCADE)
page = models.ForeignKey(Page, related_name="revisions", on_delete=models.CASCADE)
class Meta:
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ordering = ["date"]
def get_absolute_url(self):
"""
This is needed for black magic powered UpdateView's children
"""
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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", on_delete=models.CASCADE
)
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url = models.CharField(_("url"), max_length=255)
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param = models.CharField(_("param"), max_length=128, default="")
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type = models.CharField(
_("type"), max_length=32, choices=settings.SITH_NOTIFICATIONS, default="GENERIC"
)
date = models.DateTimeField(_("date"), default=timezone.now)
viewed = models.BooleanField(_("viewed"), default=False, db_index=True)
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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
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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):
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label = models.CharField(_("label"), max_length=255)
date = models.DateTimeField(_("date"), default=timezone.now)
user = models.ForeignKey(User, related_name="gifts", on_delete=models.CASCADE)
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def __str__(self):
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return "%s - %s" % (self.translated_label, self.date.strftime("%d %b %Y"))
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@property
def translated_label(self):
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translations = [
label[1] for label in settings.SITH_GIFT_LIST if label[0] == self.label
]
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if len(translations) > 0:
return translations[0]
return self.label
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def is_owned_by(self, user):
if user.is_anonymous:
return False
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return user.is_board_member or user.is_root
class OperationLog(models.Model):
"""
General purpose log object to register operations
"""
date = models.DateTimeField(_("date"), auto_now_add=True)
label = models.CharField(_("label"), max_length=255)
operator = models.ForeignKey(
User, related_name="logs", on_delete=models.SET_NULL, null=True
)
operation_type = models.CharField(
_("operation type"), max_length=40, choices=settings.SITH_LOG_OPERATION_TYPE
)
def is_owned_by(self, user):
return user.is_root
def __str__(self):
return "%s - %s - %s" % (self.operation_type, self.label, self.operator)