Johannes
Follow-up to post prior to this one - you said:
var model=form.getModel();
model.language[0] = 1;
In my code, when I try do this, I get a
java.lang.NullPointerException.
starting off:
at
org.apache.cocoon.forms.flow.javascript.ScriptableWidget.has(ScriptableWidget.java:96)
at
org.mozilla.javascript.ScriptRuntime.setElem(ScriptRuntime.java:1050)
at
org.mozilla.javascript.Interpreter.do_setElem(Interpreter.java:2705)
....
Derek
>>> Johannes Textor <[EMAIL PROTECTED]> 2007/06/08 10:00 AM >>>
Derek,
>
> Thanks; that is clearer. Am I correct in assuming that the :
> <fi:values>
> <fi:value>1</fi:value>
> <fi:value>3</fi:value>
> </fi:values>
> will be displayed as "checked input boxes" with a:
> <fi:styling list-type="checkbox"/>
>
I don't really know, since I do not use the "default" CForms
stylesheets, instead I normally create my own. It would certainly make
sense if that happened, though :)
>
> I still do not understand the rationale for this; this approach
> effectively means two sets of calls to the database to generate the
> output (1) to create the *possible* values as fd:item, and (2) to
> create the values which appear as fi:item. While doing the first
> is straightforward, doing the second will mean placing another
> database call inside of the flowscript, yes?
>
(2) appear as fi:value (not fi:item, those are simply the same as
fd:item), but I assume that was what you meant. Yes, two calls to the
database are needed - but that's normal, isn't it ? I mean, you usually
keep all possible values in one table and the n:m association between
objects and these values in another one.
Actually, it is possible to do both from flowscript with the following
syntax:
<fd:multivaluefield id="language">
<fd:label>Select language:</fd:label>
<fd:datatype base="integer"/>
<fd:selection-list id="language" type="flow-jxpath"
list-path="language" value-path="id" label-path="name"/>
</fd:multivaluefield>
and then in Flowscript:
var list;
list.language = new java.util.Vector();
list.language.add(getAllLanguagesFromDatabase());
/* For it to work, allLanguagesFromDatabase() must return a list of
POJOs that implement the methods getId() and getName() */
var form = new Form("formdef.xml");
var model = form.getModel();
model.languages[0] = 1;
model.languages[1] = 3;
form.showForm("my-form", list);
>
> Thanks again for the clear code explanation! An example like this
in
> the docs would be great.
>
> Derek
>
I agree that the docs on multivaluefields are more than sparse;
checking
quickly, I did not find anything in the wiki either. Did not check the
samples, though, I guess there is one which covers this.
Cheers,
Johannes
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