J'avais exactement besoin de cela pour Mayan EDMS, stockage enfichable et séparation de base de données. En utilisant la dernière bibliothèque PyMongo de Michael Dirolf, il était plutôt trivial d'avoir un cours de base.
Pour l'utiliser:
from gridfsstorage import GridFSStorage
file = models.FileField(storage=GridFSStorage())
le fichier gridfsstorage.py:
import os
from django.core.files.storage import Storage
from django.utils.encoding import force_unicode
from django.conf import settings
from pymongo import Connection
from gridfs import GridFS
class GridFSStorage(Storage):
def __init__(self, *args, **kwargs):
self.db = Connection(host=settings.GRIDFS_HOST,
port=settings.GRIDFS_PORT)[settings.DATABASE_NAME]
self.fs = GridFS(self.db)
def save(self, name, content):
while True:
try:
# This file has a file path that we can move.
if hasattr(content, 'temporary_file_path'):
self.move(content.temporary_file_path(), name)
content.close()
# This is a normal uploadedfile that we can stream.
else:
# This fun binary flag incantation makes os.open throw an
# OSError if the file already exists before we open it.
newfile = self.fs.new_file(filename=name)
try:
for chunk in content.chunks():
newfile.write(chunk)
finally:
newfile.close()
except Exception, e:
raise
else:
# OK, the file save worked. Break out of the loop.
break
return name
def open(self, name, *args, **kwars):
return self.fs.get_last_version(name)
def delete(self, name):
oid = self.fs.get_last_version(name)._id
self.fs.delete(oid)
def exists(self, name):
return self.fs.exists(filename=name)
def path(self, name):
return force_unicode(name)
def size(self, name):
return self.fs.get_last_version(name).length
def move(self, old_file_name, name, chunk_size=1024*64):
# first open the old file, so that it won't go away
old_file = open(old_file_name, 'rb')
try:
newfile = self.fs.new_file(filename=name)
try:
current_chunk = None
while current_chunk != '':
current_chunk = old_file.read(chunk_size)
newfile.write(current_chunk)
finally:
newfile.close()
finally:
old_file.close()
try:
os.remove(old_file_name)
except OSError, e:
# Certain operating systems (Cygwin and Windows)
# fail when deleting opened files, ignore it. (For the
# systems where this happens, temporary files will be auto-deleted
# on close anyway.)
if getattr(e, 'winerror', 0) != 32 and getattr(e, 'errno', 0) != 13:
raise
ajouté un contenant repo github le backend de stockage de GridFS http://goo.gl/tCFvf –