def handle_uploaded_file(f: File,
path: Optional[List[str]] = None,
name: Optional[str] = None,
max_length: Optional[int] = None) -> str:
"""Handle an uploaded file by a form and return the complete file's path
path has to be iterable
"""
def get_name(file: File) -> str:
if hasattr(file, 'name'):
name = file.name
elif hasattr(file, '_name'):
name = file._name
else:
name = 'file_{:08x}'.format(randint(0, MAXINT))
if name.rpartition('.')[2] not in settings.ALLOWED_EXTENSIONS:
name = f'{name}.txt'
return name
dir_path_length = 1 # For the final '/'
if not hasattr(path, '__iter__'): # TODO: path is None (or add support for only one string)
relative_dir_path = 'upload'
dir_path = join(settings.MEDIA_ROOT, relative_dir_path)
dir_path_length += len(relative_dir_path)
else:
relative_dir_path = join(*path)
dir_path = join(settings.MEDIA_ROOT, *path)
# The storage uses '/' even on Windows.
dir_path_length += len('/'.join(relative_dir_path))
if not name:
name = get_name(f)
if max_length:
max_length -= dir_path_length
if max_length <= 0:
raise ValueError('The max length is too small.')
final_path = FileCreator(dir_path=dir_path, name=name, max_length=max_length).create()
with open(final_path, 'wb', 0o755) as destination:
for chunk in f.chunks():
destination.write(chunk)
return join(relative_dir_path, basename(final_path))
