Django provides two convenient ways to access the current storage class:
DefaultStorage
[source]¶DefaultStorage
provides
lazy access to the current default storage system as defined by
DEFAULT_FILE_STORAGE
. DefaultStorage
uses
get_storage_class()
internally.
get_storage_class
(import_path=None)[source]¶Returns a class or module which implements the storage API.
When called without the import_path
parameter get_storage_class
will return the current default storage system as defined by
DEFAULT_FILE_STORAGE
. If import_path
is provided,
get_storage_class
will attempt to import the class or module from the
given path and will return it if successful. An exception will be
raised if the import is unsuccessful.
FileSystemStorage
class¶FileSystemStorage
(location=None, base_url=None, file_permissions_mode=None, directory_permissions_mode=None)[source]¶The FileSystemStorage
class implements
basic file storage on a local filesystem. It inherits from
Storage
and provides implementations
for all the public methods thereof.
location
¶Absolute path to the directory that will hold the files.
Defaults to the value of your MEDIA_ROOT
setting.
base_url
¶URL that serves the files stored at this location.
Defaults to the value of your MEDIA_URL
setting.
file_permissions_mode
¶The file system permissions that the file will receive when it is
saved. Defaults to FILE_UPLOAD_PERMISSIONS
.
directory_permissions_mode
¶The file system permissions that the directory will receive when it is
saved. Defaults to FILE_UPLOAD_DIRECTORY_PERMISSIONS
.
Note
The FileSystemStorage.delete()
method will not raise
an exception if the given file name does not exist.
Storage
class¶Storage
[source]¶The Storage
class provides a
standardized API for storing files, along with a set of default
behaviors that all other storage systems can inherit or override
as necessary.
Note
When methods return naive datetime
objects, the effective timezone
used will be the current value of os.environ['TZ']
; note that this
is usually set from Django’s TIME_ZONE
.
accessed_time
(name)[source]¶Returns a naive datetime
object containing the last
accessed time of the file. For storage systems that aren’t
able to return the last accessed time this will raise
NotImplementedError
instead.
Deprecated since version 1.10: Use get_accessed_time()
instead.
created_time
(name)[source]¶Returns a naive datetime
object containing the creation
time of the file. For storage systems that aren’t able to
return the creation time this will raise
NotImplementedError
instead.
Deprecated since version 1.10: Use get_created_time()
instead.
delete
(name)[source]¶Deletes the file referenced by name
. If deletion is not supported
on the target storage system this will raise NotImplementedError
instead
exists
(name)[source]¶Returns True
if a file referenced by the given name already exists
in the storage system, or False
if the name is available for a new
file.
get_accessed_time
(name)[source]¶Returns a datetime
of the last accessed time of the
file. For storage systems unable to return the last accessed time this
will raise NotImplementedError
.
If USE_TZ
is True
, returns an aware datetime
,
otherwise returns a naive datetime
in the local timezone.
get_available_name
(name, max_length=None)[source]¶Returns a filename based on the name
parameter that’s free and
available for new content to be written to on the target storage
system.
The length of the filename will not exceed max_length
, if provided.
If a free unique filename cannot be found, a
SuspiciousFileOperation
exception will be raised.
If a file with name
already exists, an underscore plus a random
7 character alphanumeric string is appended to the filename before
the extension.
get_created_time
(name)[source]¶Returns a datetime
of the creation time of the file.
For storage systems unable to return the creation time this will raise
NotImplementedError
.
If USE_TZ
is True
, returns an aware datetime
,
otherwise returns a naive datetime
in the local timezone.
get_modified_time
(name)[source]¶Returns a datetime
of the last modified time of the
file. For storage systems unable to return the last modified time this
will raise NotImplementedError
.
If USE_TZ
is True
, returns an aware datetime
,
otherwise returns a naive datetime
in the local timezone.
get_valid_name
(name)[source]¶Returns a filename based on the name
parameter that’s suitable
for use on the target storage system.
generate_filename
(filename)[source]¶Validates the filename
by calling get_valid_name()
and
returns a filename to be passed to the save()
method.
The filename
argument may include a path as returned by
FileField.upload_to
.
In that case, the path won’t be passed to get_valid_name()
but
will be prepended back to the resulting name.
The default implementation uses os.path
operations. Override
this method if that’s not appropriate for your storage.
listdir
(path)[source]¶Lists the contents of the specified path, returning a 2-tuple of lists;
the first item being directories, the second item being files. For
storage systems that aren’t able to provide such a listing, this will
raise a NotImplementedError
instead.
modified_time
(name)[source]¶Returns a naive datetime
object containing the last
modified time. For storage systems that aren’t able to return
the last modified time, this will raise
NotImplementedError
instead.
Deprecated since version 1.10: Use get_modified_time()
instead.
open
(name, mode=’rb’)[source]¶Opens the file given by name
. Note that although the returned file
is guaranteed to be a File
object, it might actually be some
subclass. In the case of remote file storage this means that
reading/writing could be quite slow, so be warned.
path
(name)[source]¶The local filesystem path where the file can be opened using Python’s
standard open()
. For storage systems that aren’t accessible from
the local filesystem, this will raise NotImplementedError
instead.
save
(name, content, max_length=None)[source]¶Saves a new file using the storage system, preferably with the name
specified. If there already exists a file with this name name
, the
storage system may modify the filename as necessary to get a unique
name. The actual name of the stored file will be returned.
The max_length
argument is passed along to
get_available_name()
.
The content
argument must be an instance of
django.core.files.File
or a file-like object that can be
wrapped in File
.
Jun 09, 2017