On Jun 23, 2005, at 9:48 AM, Johannes Becker wrote:
Hi,
I've got a form-definition:
...
<fd:validation>
<fd:range min="5" max="25"/>
</fd:validation>
...
My aim is to pass parameters into this definition-file. Why? Because
the max-attribute (of fd:range) varies (depending whats on some
database).
Is there, for example, a way of mixing Forms-definiton and JXTemplate?
Could I then write something like this?
...
<fd:validation>
<fd:range min="5" max="#{number/max}"/>
</fd:validation>
Yeah, certainly. You could do that. In the flowscript, say something
like:
var form = new Form ('cocoon:/myForm');
...then set up a pipeline to handle that request and generate the form
definition from a JXT template.
However, this feels kind of baroque to me. For dynamic validation
requirements, my instinct is to do the validation manually in/through
flowscript. Unfortunately, this probably requires your flowscript
validator function to be able to access local variables in the
flowscript function that is setting up and invoking the form. That's
quite easy in the v2 forms flow API, but that AP is not recommended
unless you're already using it, as it will be going away. If you are
using v2, you can do (if memory serves) something like:
form.getWidget().foobar.onValidate =
function (widget) {
.
.
.
return isValid; # (true or false)
};
I think in the standard API it might be trickier (again the issue is
variable scope). But maybe it wouldn't be tricky... something I never
thought of until now, you could try adding the widget's validation
function as a property of the widget:
var something;
.
.
form.getWidget().foo.validate =
function() {
.
.
return isValid;
};
then in the form definition:
<fd:validate>
<fd:javascript>
widget.validate();
</fd:javascript>
</fd:validate>
If you try this, let us know whether it works! :-) If it does, then it
wouldn't be strictly necessary to add v2's "onValidate" feature to the
standard form API (although it still might be a good idea...)
HTH,
—ml—
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