A Django storage backend that gives random names to files.

By default, django.core.files.storage.FileSystemStorage deals with conflicting filenames by appending an underscore to the file. For instance, if you try to create hello.txt when it already exists, it will rename it as hello_.txt.

django-randomfilenamestorage creates random filenames, so if you try to create hello.txt, it will save it as 7z0a8m25sh9fyitx.txt. Directory names and extensions are preserved, only the root filename is randomized.

The easiest way to install django-randomfilenamestorage is to use pip:

pip install django-randomfilenamestorage

In your Django settings file:

• Set DEFAULT_FILE_STORAGE to 'django_randomfilenamestorage.storage.RandomFilenameFileSystemStorage'
• Optionally, add 'django-dbstorage' to INSTALLED_APPS

This gives you random filenames, backed on Django's FileSystemStorage storage class.

You can define a new underlying storage class by using RandomFilenameMetaStorage to wrap it:

from django.core.files.storage import get_storage_class

from django_randomfilenamestorage.storage import RandomFilenameMetaStorage

RandomFilenameMyStorage = RandomFilenameMetaStorage(
    storage_class=get_storage_class('myapp.storage.MyStorage'),
)

RandomFilenameMetaStorage defaults to 16-character root filenames. To change the default, define settings.RANDOM_FILENAME_LENGTH to a different integer value.

To change the filename length of a wrapped storage class, pass in a length argument to RandomFilenameMetaStorage. To override it for a particular storage instance, pass in a randomfilename_length argument to its constructor.

RandomFilenameMetaStorage is careful about not overwriting existing files, on creation. Unfortunately, many storage classes do not throw an OSError with EEXISTS when they detect a duplicate file on _save().

If the underlying storage class accepts uniquify_names=False in its constructor, RandomFilenameMetaStorage will reduce the number of round-trips to the underlying storage class and make random filename generation more efficient.

Safe storage classes include:

• django_randomfilenamestorage.storage.SafeFileSystemStorage
• django-dbstorage.