because the file stream has already been read by accept and the you
are pointing at the bottom of the file. Try
request.vars.backup.file.seek(0)
request.form.vars.backup.file.read()
if it does not work, then the file stream can only be read
sequentially and you need to re-open the file and read from there
Massimo
On Nov 15, 7:59 am, Iceberg <iceb...@21cn.com> wrote:
> Hi folks,
>
> How to read an uploaded file object line by line? This seemingly easy
> task stumps me. Now I am totally lost. :-/
>
> def restore():
> form = SQLFORM.factory(Field
> ('backup','upload',requires=IS_UPLOAD_FILENAME()))
> if form.accepts(request.vars,keepvalues=True,session=None):
>
> # response.flash = type(form.vars.backup.file)
> # It says it is an instance (of what?)
>
> # response.flash = type(form.vars.backup.file.file)
> # It says it is a file object. Good, but "file.file" is wired enough.
>
> # response.flash = form.vars.backup.file.read()
> # response.flash = form.vars.backup.file.file.read()
> # The above two lines all return an empty string, ALWAYS.
>
> response.flash = [l for l in form.vars.backup.file.file]
> # And the above line does not read any data either.
> # Please help.
> # Actually I gonna use import_from_csv_file() for a restore.
> # But now the import_from_csv_file() can not detect any data.
>
> return form
>
> # Thanks in advance!
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