def _open(self, name, mode="rb"):
"""
Return a File object.
"""
attachment = Attachment.objects.using(self.using).get(attachment__exact=name)
fname = File(StringIO(attachment.blob), attachment.filename)
# Make sure the checksum match before returning the file
if not md5buffer(fname) == attachment.checksum:
raise IntegrityError("Checksum mismatch")
fname.size = attachment.size
fname.mode = mode
return fname
def _open(self, name, mode="rb"):
"""
Read the file from the database, and return
as a File instance.
"""
attachment = Attachment.objects.using(self.using).get(attachment__exact=name)
cursor = connections[self.using].cursor()
lobject = cursor.db.connection.lobject(attachment.blob, "r")
fname = File(StringIO(lobject.read()), attachment.filename)
lobject.close()
# Make sure the checksum match before returning the file
if not md5buffer(fname) == attachment.checksum:
raise IntegrityError("Checksum mismatch")
fname.size = attachment.size
fname.mode = mode
return fname
