It works like a charm. I used the stream function and that works too.
#7days
def fast_download():
session.forget(response)
cache.client(time_expire=604800)(lambda: 0)()
# very basic security (only allow fast_download on
your_table.upload_field):
if not request.args(0).startswith("db.Images"):
return download()
filename = os.path.join(request.folder,'uploads',request.args(0))
return response.stream(open(filename,'rb'))
thanks Niphlod you are awesome.
On Sunday, April 14, 2013 3:21:18 PM UTC+2, Niphlod wrote:
>
> ok. So, basically the problem is that response.stream is a "special" kind
> of function.
> It raises HTTP(200, content_of_the_file) instead of returning it, and
> raising an HTTP(200) is a smart way to do it.
> Unfortunately, this means that
> def download():
> return response.stream(....)
>
> basically doesn't return from download, it raises an exception inside
> response.stream and the execution is cutted of right in the response.stream
> function.
>
> A decorator "outside" download() doesn't work, because it doesn't have the
> chance to execute that function completely.
> Now, on the bright side, the download() function should be the only one
> behaving in this way, so the cache.client implementation shouldn't change.
>
> I'll see if we can use a "public" function just to adjust headers
> beforehand without requiring for the actual function.
> For the time being, this works ok.
>
> def download():
> cache.client(time_expire=604800, quick='SVL')(lambda: 0)()
> """
> allows downloading of uploaded files
> http://..../[app]/default/download/[filename]
> """
> return response.download(request, db)
>
> basically because cache.client is coded to be a decorator, you have to
> pass it a function.
> In this case, a dummy "lambda:0" is passed. To fire the actual
> "calculations" of the cache decorator, you have to call it (and that's why
> there's an empty () at the end). The headers are then manipulated in the
> current response, so response.download pick it up where headers are already
> set, and when it returns the image, the headers are shipped with the
> response.
>
> If you have any doubts, please ask.
>
>
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