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Fixed #26038 -- Changed FileSystemStorage defaults on setting change.

Thanks to Dave Voutila for the report and Tim for the review.
This commit is contained in:
Simon Charette 2016-01-06 23:34:55 -05:00
parent 6ea7b6776c
commit 56c461a0d7
3 changed files with 84 additions and 28 deletions

View File

@ -6,11 +6,12 @@ from django.conf import settings
from django.core.exceptions import SuspiciousFileOperation
from django.core.files import File, locks
from django.core.files.move import file_move_safe
from django.core.signals import setting_changed
from django.utils._os import abspathu, safe_join
from django.utils.crypto import get_random_string
from django.utils.deconstruct import deconstructible
from django.utils.encoding import filepath_to_uri, force_text
from django.utils.functional import LazyObject
from django.utils.functional import LazyObject, cached_property
from django.utils.module_loading import import_string
from django.utils.six.moves.urllib.parse import urljoin
from django.utils.text import get_valid_filename
@ -165,24 +166,49 @@ class FileSystemStorage(Storage):
"""
def __init__(self, location=None, base_url=None, file_permissions_mode=None,
directory_permissions_mode=None):
if location is None:
location = settings.MEDIA_ROOT
self.base_location = location
self.location = abspathu(self.base_location)
if base_url is None:
base_url = settings.MEDIA_URL
elif not base_url.endswith('/'):
directory_permissions_mode=None):
self._location = location
if base_url is not None and not base_url.endswith('/'):
base_url += '/'
self.base_url = base_url
self.file_permissions_mode = (
file_permissions_mode if file_permissions_mode is not None
else settings.FILE_UPLOAD_PERMISSIONS
)
self.directory_permissions_mode = (
directory_permissions_mode if directory_permissions_mode is not None
else settings.FILE_UPLOAD_DIRECTORY_PERMISSIONS
)
self._base_url = base_url
self._file_permissions_mode = file_permissions_mode
self._directory_permissions_mode = directory_permissions_mode
setting_changed.connect(self._clear_cached_properties)
def _clear_cached_properties(self, setting, **kwargs):
"""Reset setting based property values."""
if setting == 'MEDIA_ROOT':
self.__dict__.pop('base_location', None)
self.__dict__.pop('location', None)
elif setting == 'MEDIA_URL':
self.__dict__.pop('base_url', None)
elif setting == 'FILE_UPLOAD_PERMISSIONS':
self.__dict__.pop('file_permissions_mode', None)
elif setting == 'FILE_UPLOAD_DIRECTORY_PERMISSIONS':
self.__dict__.pop('directory_permissions_mode', None)
def _value_or_setting(self, value, setting):
return setting if value is None else value
@cached_property
def base_location(self):
return self._value_or_setting(self._location, settings.MEDIA_ROOT)
@cached_property
def location(self):
return abspathu(self.base_location)
@cached_property
def base_url(self):
return self._value_or_setting(self._base_url, settings.MEDIA_URL)
@cached_property
def file_permissions_mode(self):
return self._value_or_setting(self._file_permissions_mode, settings.FILE_UPLOAD_PERMISSIONS)
@cached_property
def directory_permissions_mode(self):
return self._value_or_setting(self._directory_permissions_mode, settings.FILE_UPLOAD_DIRECTORY_PERMISSIONS)
def _open(self, name, mode='rb'):
return File(open(self.path(name), mode))

View File

@ -120,15 +120,7 @@ def language_changed(**kwargs):
@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:
if kwargs['setting'] == 'DEFAULT_FILE_STORAGE':
from django.core.files.storage import default_storage
default_storage._wrapped = empty

View File

@ -83,7 +83,7 @@ class FileStorageDeconstructionTests(unittest.TestCase):
self.assertEqual(kwargs, kwargs_orig)
class FileStorageTests(unittest.TestCase):
class FileStorageTests(SimpleTestCase):
storage_class = FileSystemStorage
def setUp(self):
@ -403,6 +403,44 @@ class FileStorageTests(unittest.TestCase):
with self.assertRaises(AssertionError):
self.storage.delete('')
@override_settings(
MEDIA_ROOT='media_root',
MEDIA_URL='media_url/',
FILE_UPLOAD_PERMISSIONS=0o777,
FILE_UPLOAD_DIRECTORY_PERMISSIONS=0o777,
)
def test_setting_changed(self):
"""
Properties using settings values as defaults should be updated on
referenced settings change while specified values should be unchanged.
"""
storage = self.storage_class(
location='explicit_location',
base_url='explicit_base_url/',
file_permissions_mode=0o666,
directory_permissions_mode=0o666,
)
defaults_storage = self.storage_class()
settings = {
'MEDIA_ROOT': 'overriden_media_root',
'MEDIA_URL': 'overriden_media_url/',
'FILE_UPLOAD_PERMISSIONS': 0o333,
'FILE_UPLOAD_DIRECTORY_PERMISSIONS': 0o333,
}
with self.settings(**settings):
self.assertEqual(storage.base_location, 'explicit_location')
self.assertIn('explicit_location', storage.location)
self.assertEqual(storage.base_url, 'explicit_base_url/')
self.assertEqual(storage.file_permissions_mode, 0o666)
self.assertEqual(storage.directory_permissions_mode, 0o666)
self.assertEqual(defaults_storage.base_location, settings['MEDIA_ROOT'])
self.assertIn(settings['MEDIA_ROOT'], defaults_storage.location)
self.assertEqual(defaults_storage.base_url, settings['MEDIA_URL'])
self.assertEqual(defaults_storage.file_permissions_mode, settings['FILE_UPLOAD_PERMISSIONS'])
self.assertEqual(
defaults_storage.directory_permissions_mode, settings['FILE_UPLOAD_DIRECTORY_PERMISSIONS']
)
class CustomStorage(FileSystemStorage):
def get_available_name(self, name, max_length=None):