OpenSlides/openslides/core/apps.py
2018-10-29 12:33:15 +01:00

157 lines
6.0 KiB
Python

from collections import OrderedDict
from operator import attrgetter
from typing import Any, Dict, List
from django.apps import AppConfig
from django.conf import settings
from django.core.exceptions import ImproperlyConfigured
from django.db.models.signals import post_migrate
from django.db.utils import OperationalError
from ..utils.projector import register_projector_elements
class CoreAppConfig(AppConfig):
name = 'openslides.core'
verbose_name = 'OpenSlides Core'
angular_site_module = True
angular_projector_module = True
def ready(self):
# Import all required stuff.
from .config import config
from ..utils.rest_api import router
from ..utils.cache import element_cache
from .projector import get_projector_elements
from .signals import (
delete_django_app_permissions,
get_permission_change_data,
permission_change,
post_permission_creation,
required_users,
user_data_required,
)
from .views import (
ChatMessageViewSet,
ConfigViewSet,
CountdownViewSet,
ProjectorMessageViewSet,
ProjectorViewSet,
TagViewSet,
)
from ..utils.constants import set_constants, get_constants_from_apps
from .websocket import (
NotifyWebsocketClientMessage,
ConstantsWebsocketClientMessage,
GetElementsWebsocketClientMessage,
AutoupdateWebsocketClientMessage,
)
from ..utils.websocket import register_client_message
# Collect all config variables before getting the constants.
config.collect_config_variables_from_apps()
# Set constants
try:
set_constants(get_constants_from_apps())
except (ImproperlyConfigured, OperationalError):
# Database is not loaded. This happens in tests and migrations.
pass
# Define projector elements.
register_projector_elements(get_projector_elements())
# Connect signals.
post_permission_creation.connect(
delete_django_app_permissions,
dispatch_uid='delete_django_app_permissions')
permission_change.connect(
get_permission_change_data,
dispatch_uid='core_get_permission_change_data')
user_data_required.connect(
required_users,
dispatch_uid='core_required_users')
post_migrate.connect(call_save_default_values, sender=self, dispatch_uid='core_save_config_default_values')
# Register viewsets.
router.register(self.get_model('Projector').get_collection_string(), ProjectorViewSet)
router.register(self.get_model('ChatMessage').get_collection_string(), ChatMessageViewSet)
router.register(self.get_model('Tag').get_collection_string(), TagViewSet)
router.register(self.get_model('ConfigStore').get_collection_string(), ConfigViewSet, 'config')
router.register(self.get_model('ProjectorMessage').get_collection_string(), ProjectorMessageViewSet)
router.register(self.get_model('Countdown').get_collection_string(), CountdownViewSet)
# Sets the cache
try:
element_cache.ensure_cache()
except (ImproperlyConfigured, OperationalError):
# This happens in the tests or in migrations. Do nothing
pass
# Register client messages
register_client_message(NotifyWebsocketClientMessage())
register_client_message(ConstantsWebsocketClientMessage())
register_client_message(GetElementsWebsocketClientMessage())
register_client_message(AutoupdateWebsocketClientMessage())
def get_config_variables(self):
from .config_variables import get_config_variables
return get_config_variables()
def get_startup_elements(self):
"""
Yields all Cachables required on startup i. e. opening the websocket
connection.
"""
for model_name in ('Projector', 'ChatMessage', 'Tag', 'ProjectorMessage', 'Countdown', 'ConfigStore'):
yield self.get_model(model_name)
def get_angular_constants(self):
from .config import config
constants: Dict[str, Any] = {}
# Client settings
client_settings_keys = [
'MOTION_IDENTIFIER_MIN_DIGITS',
'MOTION_IDENTIFIER_WITHOUT_BLANKS',
'MOTIONS_ALLOW_AMENDMENTS_OF_AMENDMENTS'
]
client_settings_dict = {}
for key in client_settings_keys:
try:
client_settings_dict[key] = getattr(settings, key)
except AttributeError:
# Settings key does not exist. Do nothing. The client will
# treat this as undefined.
pass
constants['OpenSlidesSettings'] = client_settings_dict
# Config variables
config_groups: List[Any] = []
for config_variable in sorted(config.config_variables.values(), key=attrgetter('weight')):
if config_variable.is_hidden():
# Skip hidden config variables. Do not even check groups and subgroups.
continue
if not config_groups or config_groups[-1]['name'] != config_variable.group:
# Add new group.
config_groups.append(OrderedDict(
name=config_variable.group,
subgroups=[]))
if not config_groups[-1]['subgroups'] or config_groups[-1]['subgroups'][-1]['name'] != config_variable.subgroup:
# Add new subgroup.
config_groups[-1]['subgroups'].append(OrderedDict(
name=config_variable.subgroup,
items=[]))
# Add the config variable to the current group and subgroup.
config_groups[-1]['subgroups'][-1]['items'].append(config_variable.data)
constants['OpenSlidesConfigVariables'] = config_groups
return constants
def call_save_default_values(**kwargs):
from .config import config
config.save_default_values()