10b3bb6497
* geis does not work with channels2 and never will be (it has to be python now) * pytest * rewrote cache system * use username instead of pk for admin user in tests
67 lines
2.7 KiB
Python
67 lines
2.7 KiB
Python
from django.apps import apps
|
|
from django.contrib.auth.models import Permission
|
|
from django.contrib.contenttypes.models import ContentType
|
|
from django.db.models import Q
|
|
from django.dispatch import Signal
|
|
|
|
from ..utils.auth import has_perm
|
|
from ..utils.collection import Collection
|
|
from .models import ChatMessage
|
|
|
|
|
|
# This signal is send when the migrate command is done. That means it is sent
|
|
# after post_migrate sending and creating all Permission objects. Don't use it
|
|
# for other things than dealing with Permission objects.
|
|
post_permission_creation = Signal()
|
|
|
|
# This signal is sent if a permission is changed (e. g. a group gets a new
|
|
# permission). Connected receivers may yield Collections.
|
|
permission_change = Signal()
|
|
|
|
# This signal is sent if someone wants to see basic user data. Connected
|
|
# receivers may answer a set of user ids that are required for the request
|
|
# user (this can be anything that is allowd as argument for
|
|
# utils.auth.has_perm()) e. g. as motion submitter or assignment candidate.
|
|
user_data_required = Signal(providing_args=['request_user'])
|
|
|
|
|
|
def delete_django_app_permissions(sender, **kwargs):
|
|
"""
|
|
Deletes the permissions, Django creates by default. Only required
|
|
for auth, contenttypes and sessions.
|
|
"""
|
|
contenttypes = ContentType.objects.filter(
|
|
Q(app_label='auth') |
|
|
Q(app_label='contenttypes') |
|
|
Q(app_label='sessions'))
|
|
Permission.objects.filter(content_type__in=contenttypes).delete()
|
|
|
|
|
|
def get_permission_change_data(sender, permissions, **kwargs):
|
|
"""
|
|
Yields all necessary Cachables if the respective permissions change.
|
|
"""
|
|
core_app = apps.get_app_config(app_label='core')
|
|
for permission in permissions:
|
|
if permission.content_type.app_label == core_app.label:
|
|
if permission.codename == 'can_see_projector':
|
|
yield core_app.get_model('Projector')
|
|
elif permission.codename == 'can_manage_projector':
|
|
yield core_app.get_model('ProjectorMessage')
|
|
yield core_app.get_model('Countdown')
|
|
elif permission.codename == 'can_use_chat':
|
|
yield core_app.get_model('ChatMessage')
|
|
|
|
|
|
def required_users(sender, request_user, **kwargs):
|
|
"""
|
|
Returns all user ids that are displayed as chatters if request_user can
|
|
use the chat. This function may return an empty set.
|
|
"""
|
|
chatters = set()
|
|
if has_perm(request_user, 'core.can_use_chat'):
|
|
for chat_message_collection_element in Collection(ChatMessage.get_collection_string()).element_generator():
|
|
full_data = chat_message_collection_element.get_full_data()
|
|
chatters.add(full_data['user_id'])
|
|
return chatters
|