[Seaside] Serving files from within Seaside

[Jon Paynter]

>
> > Hi there,
> >
> > I know people consider serving files a job that should be handled by a
> > "real" http server rather than Seaside. In most cases, esp. for static
> > resources that can be accessed by the public, that is absolutely the
> case.
> >
> > But I need to serve files in a callback. The files are being partly
> > calculated and read from a DB and should be available for download by
> > clicking on a link.
> >
> > I've been looking into WAFileLibrary and WAFileHandler, but am not sure
> > where to start.
> >
> > What I want to do is something like:
> >
> > html anchor
> >  callback: [self calculateChartAndServeIt]
> >  with: 'Download full chart'.
> >
> > I know I will have to respond:, but can I do that in a callback?
> >
> > Joachim
>

I do a very similar thing in my application.  Generate a file and serve it
up to the user.  So far this has worked well:
downloadtext: contents named: aFilename
    "trigger a file download operation for aFilename with the contents in
contents"

    self requestContext respond: [ : response |
        response contentType: 'text/plain';
        attachmentWithFileName: aFilename;
        nextPutAll: contents.
    ].


where "contents" is a string containing the text of the file to download
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