Re: [Xsltforms-support] file uploads

[Tim T. <tim...@gm...>]

Conal,

I was also going to suggest using the transform() function with an identity
template. Here's a working example that uses it with your fork of XSLTForms:

http://timathom.github.io/xforms/upload.xhtml

The service seems to require the filename in the Content-Disposition, so I
just hard-coded in a temporary name (line 2001 of xsltforms.js).

XSLTForms nicely provides access to the "response-body" object for the
"xforms-submit-done" event (even though the spec only includes it for the
xforms-submit-error event), so it's easy to insert that (assuming it's XML)
into an XForms instance.

I second Michael's suggestion of documenting your work in the Wikibook :)
I've referred several times myself to the page he created to document the
transform() function.

--
Tim A. Thompson
Metadata Librarian (Spanish/Portuguese Specialty)
Princeton University Library

www.linkedin.com/in/timathompson
ta...@pr...

On Fri, Feb 10, 2017 at 9:46 AM, C. M. Sperberg-McQueen <
cm...@bl...> wrote:

>
> > On Feb 10, 2017, at 3:01 AM, Conal Tuohy <con...@gm...> wrote:
> > ...
> >
> > So It seems to me, in order to send my XML as a form parameter, I need
> to serialize the XML first, and then submit the serialization. I was hoping
> that XForms would provide a custom "serialize()" function that would escape
> my XML as text, or that there'd be some other obvious way to fix this, but
> I haven't found anything.
>
> What version of XSLTForms are you using?
>
> The current draft of XForms 2.0 does define a serialize() function, and
> the snapshot of XSLTForms I downloaded last month from SourceForge
> does have an implementation of it.  (Hmm.  For that matter, so does
> 1.0RC2 — at least, the array XsltForms_xpathCoreFunctions defined
> in xsltforms.js has an entry for serialize.)
>
> The transform() function also produces a string (with the serialized form
> of the XML in question), so the expression transform(instance(‘thisone’),
> ’identity.xsl’,false)
> should produce the string you want.
>
> >
> > The only solution I can see is to use a recursive <xf:action> to walk my
> XML instance's tree, gradually serializing it into a text node in another
> instance, and then submit THAT instance. This seems awkward, but I'm sure
> it's possible, and I'll do it if no-one can suggest anything better!
>
> Ooof!  Well, that would work, I guess.  But try serialize() and
> transform() first.
> You may need to serialize into another instance using xf:setvalue, just
> because
> XForms isn’t always ready to accept values instead of references to values.
>
> And on another note — if you have just spent time figuring out how
> xf:upload
> works out of the box in XSLTForms, and how to modify XSLTForms to make it
> do what you actually needed, could you be persuaded to add a page to the
> XSLTForms wikibook describing what you learned?
>
> If every time a serious user of XSLTForms had trouble making something
> work, we made it a practice to write up what we learned and put it into the
> XSLTForms wikibook, to help the next user, the wikibook would soon be
> much more useful than it has been.  (Even in a purely self-interested way,
> this can pay off.  Every time I come back to using transform() after a long
> period of not thinking about it, I find myself trying to remember how it
> works,
> and so the time I spent writing a page on it in the wikibook a couple of
> years ago has now been paid back two or three times.)
>
> ********************************************
> C. M. Sperberg-McQueen
> Black Mesa Technologies LLC
> cm...@bl...
> http://www.blackmesatech.com
> ********************************************
>
>