Bingo! You found that reason which costs me hours of time. T_T
Thanks!
On Nov15, 11:22pm, mdipierro <mdipie...@cs.depaul.edu> wrote:
> 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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