I do not understand the code in the manual and what I have seen on
this list about csv-downloads.
I don't have a problem to do csv-export from the commandline in a
shell. I just cannot figure out how the examples I referred to work
in a MVC -environment.
Take for example this export function (taken from a mail in this list):
def export():
import cStringIO
s = cStringIO.StringIO()
db.export_to_csv_file(s)
response.headers['Content-Type'] = 'text/csv'
return s.getvalue()
My problem is that I do not understand what it does - especially the
"s=cStringIO.String(IO()" part.
Can somebody explain to me where does 's' get it's content from?
I know on the commandline I can do:
records = db(query).select(db.table())
and then records.export_to_csv_file(open('somefile','w')).
Say I have a set of records (result of a query) which the user can see
in a view and the user wants to download that selection of records.
The link refer to this 'export' controller. How do I do it?
I would like to see an example of how to set the link up in the view
an how the above controller is called in such a way that the user can
download the file or open it in some program able to read csv-files.
Regards
Johann
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"Finally, brethren, whatsoever things are true, whatsoever things are
honest, whatsoever things are just, whatsoever things are pure,
whatsoever things are lovely, whatsoever things are of good report;
if there be any virtue, and if there be any praise, think on these
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