159 lines
5.2 KiB
Python
159 lines
5.2 KiB
Python
import os
|
|
import time
|
|
import threading
|
|
import warnings
|
|
|
|
from django.conf import settings
|
|
from django.core.signals import setting_changed
|
|
from django.db import connections, router
|
|
from django.db.utils import ConnectionRouter
|
|
from django.dispatch import receiver, Signal
|
|
from django.utils import timezone
|
|
from django.utils.functional import empty
|
|
|
|
template_rendered = Signal(providing_args=["template", "context"])
|
|
|
|
# Most setting_changed receivers are supposed to be added below,
|
|
# except for cases where the receiver is related to a contrib app.
|
|
|
|
# Settings that may not work well when using 'override_settings' (#19031)
|
|
COMPLEX_OVERRIDE_SETTINGS = {'DATABASES'}
|
|
|
|
|
|
@receiver(setting_changed)
|
|
def clear_cache_handlers(**kwargs):
|
|
if kwargs['setting'] == 'CACHES':
|
|
from django.core.cache import caches
|
|
caches._caches = threading.local()
|
|
|
|
|
|
@receiver(setting_changed)
|
|
def update_installed_apps(**kwargs):
|
|
if kwargs['setting'] == 'INSTALLED_APPS':
|
|
# Rebuild any AppDirectoriesFinder instance.
|
|
from django.contrib.staticfiles.finders import get_finder
|
|
get_finder.cache_clear()
|
|
# Rebuild management commands cache
|
|
from django.core.management import get_commands
|
|
get_commands.cache_clear()
|
|
# Rebuild templatetags module cache.
|
|
from django.template.base import get_templatetags_modules
|
|
get_templatetags_modules.cache_clear()
|
|
# Rebuild get_app_template_dirs cache.
|
|
from django.template.utils import get_app_template_dirs
|
|
get_app_template_dirs.cache_clear()
|
|
# Rebuild translations cache.
|
|
from django.utils.translation import trans_real
|
|
trans_real._translations = {}
|
|
|
|
|
|
@receiver(setting_changed)
|
|
def update_connections_time_zone(**kwargs):
|
|
if kwargs['setting'] == 'TIME_ZONE':
|
|
# Reset process time zone
|
|
if hasattr(time, 'tzset'):
|
|
if kwargs['value']:
|
|
os.environ['TZ'] = kwargs['value']
|
|
else:
|
|
os.environ.pop('TZ', None)
|
|
time.tzset()
|
|
|
|
# Reset local time zone cache
|
|
timezone.get_default_timezone.cache_clear()
|
|
|
|
# Reset the database connections' time zone
|
|
if kwargs['setting'] == 'USE_TZ' and settings.TIME_ZONE != 'UTC':
|
|
USE_TZ, TIME_ZONE = kwargs['value'], settings.TIME_ZONE
|
|
elif kwargs['setting'] == 'TIME_ZONE' and not settings.USE_TZ:
|
|
USE_TZ, TIME_ZONE = settings.USE_TZ, kwargs['value']
|
|
else:
|
|
# no need to change the database connnections' time zones
|
|
return
|
|
tz = 'UTC' if USE_TZ else TIME_ZONE
|
|
for conn in connections.all():
|
|
conn.settings_dict['TIME_ZONE'] = tz
|
|
tz_sql = conn.ops.set_time_zone_sql()
|
|
if tz_sql:
|
|
conn.cursor().execute(tz_sql, [tz])
|
|
|
|
|
|
@receiver(setting_changed)
|
|
def clear_routers_cache(**kwargs):
|
|
if kwargs['setting'] == 'DATABASE_ROUTERS':
|
|
router.routers = ConnectionRouter().routers
|
|
|
|
|
|
@receiver(setting_changed)
|
|
def reset_template_engines(**kwargs):
|
|
if kwargs['setting'] in {
|
|
'TEMPLATES',
|
|
'TEMPLATE_DIRS',
|
|
'ALLOWED_INCLUDE_ROOTS',
|
|
'TEMPLATE_CONTEXT_PROCESSORS',
|
|
'TEMPLATE_DEBUG',
|
|
'TEMPLATE_LOADERS',
|
|
'TEMPLATE_STRING_IF_INVALID',
|
|
'FILE_CHARSET',
|
|
'INSTALLED_APPS',
|
|
}:
|
|
from django.template import engines
|
|
try:
|
|
del engines.templates
|
|
except AttributeError:
|
|
pass
|
|
engines._templates = None
|
|
engines._engines = {}
|
|
from django.template.engine import Engine
|
|
Engine.get_default.cache_clear()
|
|
|
|
|
|
@receiver(setting_changed)
|
|
def clear_serializers_cache(**kwargs):
|
|
if kwargs['setting'] == 'SERIALIZATION_MODULES':
|
|
from django.core import serializers
|
|
serializers._serializers = {}
|
|
|
|
|
|
@receiver(setting_changed)
|
|
def language_changed(**kwargs):
|
|
if kwargs['setting'] in {'LANGUAGES', 'LANGUAGE_CODE', 'LOCALE_PATHS'}:
|
|
from django.utils.translation import trans_real
|
|
trans_real._default = None
|
|
trans_real._active = threading.local()
|
|
if kwargs['setting'] in {'LANGUAGES', 'LOCALE_PATHS'}:
|
|
from django.utils.translation import trans_real
|
|
trans_real._translations = {}
|
|
trans_real.check_for_language.cache_clear()
|
|
|
|
|
|
@receiver(setting_changed)
|
|
def file_storage_changed(**kwargs):
|
|
file_storage_settings = {
|
|
'DEFAULT_FILE_STORAGE',
|
|
'FILE_UPLOAD_DIRECTORY_PERMISSIONS',
|
|
'FILE_UPLOAD_PERMISSIONS',
|
|
'MEDIA_ROOT',
|
|
'MEDIA_URL',
|
|
}
|
|
|
|
if kwargs['setting'] in file_storage_settings:
|
|
from django.core.files.storage import default_storage
|
|
default_storage._wrapped = empty
|
|
|
|
|
|
@receiver(setting_changed)
|
|
def complex_setting_changed(**kwargs):
|
|
if kwargs['enter'] and kwargs['setting'] in COMPLEX_OVERRIDE_SETTINGS:
|
|
# Considering the current implementation of the signals framework,
|
|
# stacklevel=5 shows the line containing the override_settings call.
|
|
warnings.warn("Overriding setting %s can lead to unexpected behavior."
|
|
% kwargs['setting'], stacklevel=5)
|
|
|
|
|
|
@receiver(setting_changed)
|
|
def root_urlconf_changed(**kwargs):
|
|
if kwargs['setting'] == 'ROOT_URLCONF':
|
|
from django.core.urlresolvers import clear_url_caches, set_urlconf
|
|
clear_url_caches()
|
|
set_urlconf(None)
|