Yes, I know way with download_handler. I want do it without my script: have
static difficult url and download direct by url - as images.
Now I select between blobstore with self download_handler and Google
Storage for developers.
2011/11/23 Jeff Schnitzer <j...@infohazard.org>
> Does this approach get the same edge caching benefit that
> image_serving_url links get? The image links point directly at a CDN
> domain.
>
> Jeff
>
>
> On Tue, Nov 22, 2011 at 6:21 PM, Niklas Rosencrantz <nikla...@gmail.com>wrote:
>
>> Have you considered BlobstoreDownloadHandler? Using it is straighforward:
>>
>> class FileDownloadHandler(blobstore_handlers.BlobstoreDownloadHandler):
>>
>>
>> def get(self, file_id):
>> file_info = FileInfo.get_by_id(long(file_id))
>>
>>
>> if not file_info or not file_info.blob:
>> self.error(404)
>>
>>
>> return
>> self.send_blob(file_info.blob, save_as=True)
>>
>>
>> I use a FileInfo class and I can recommend it.
>> A good way to serve blobs I think is a FileInfo class for instance
>>
>> class FileInfo(db.Model):
>> blob = blobstore.BlobReferenceProperty(required=True)
>>
>>
>> uploaded_by = db.UserProperty(required=True)
>> uploaded_at = db.DateTimeProperty(required=True, auto_now_add=True)
>>
>>
>> Then you can conveniently serve it as if it were a static file ie. /file/1001
>> along the structure file/<file.id> :
>>
>> class FileInfoHandler(BaseHandler):
>>
>>
>> def get(self, file_id):
>> file_info = FileInfo.get_by_id(long(file_id))
>>
>>
>> if not file_info:
>> self.error(404)
>> return
>>
>>
>> self.render_template("info.html", {
>> 'file_info': file_info,
>>
>>
>> 'logout_url': users.create_logout_url('/'),
>> })
>>
>> You may want to look at Nick Johnson's example for implementation with
>> the blobstore
>>
>> http://blog.notdot.net/2010/03/Implementing-a-dropbox-service-with-the-Blobstore-API-Part-1
>> I think the example file serving app from Nick Johnson is good and if you
>> use python and blobstore maybe you want to follow the link.
>> My opinion is that serving and uploading files should be built into the
>> framework but it is not. Instead we have to solve the same problem
>> repeatedly: File uploads and file serving.
>>
>> Better to solve uploads and serving once and for all and the FileInfo
>> class is so little boilerplate code I can add it to most of my apps since
>> most of my apps need the functionality "add a file to the blobstore" and
>> "serve a file from the blobstore" so if you ask me I say that these
>> functions should be possible without writing your own app just as part of
>> the app server.
>>
>> Regards,
>> Niklas
>>
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>
>
>
> --
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>
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