Sorry, I don’t have the time to recreate your problem, and there is some stuff
missing, such as the instantiation of the encoder, but this working example may
help:
http://jumpstart.doublenegative.com.au/jumpstart7/examples/select/easyobject
<http://jumpstart.doublenegative.com.au/jumpstart7/examples/select/easyobject>
Also note that if your Form can be submitted then you should replace
setupRender with onPrepare, or perhaps 2 methods: onPrepareForRender and
onPrepareForSubmit.
Geoff
> On 26 Jul 2017, at 2:42 am, Pascal Robert <[email protected]> wrote:
>
> Hi,
>
> Coming from the WebObject world here. I’m trying to build a select input, but
> it’s not working. The error:
>
> ERROR [2017-07-25 18:28:22,181] bootique-http-33
> o.a.t.m.T.RequestExceptionHandler: Processing of request failed with uncaught
> exception: org.apache.tapestry5.ioc.internal.OperationException: Render queue
> error in BeforeRenderTemplate[PagePrincipale:gabarit]:
> org.apache.tapestry5.ioc.internal.util.TapestryException [at
> classpath:com/druide/tests/pages/PagePrincipale.tml, line 60]
> java.lang.NullPointerException: null
> at
> org.apache.tapestry5.internal.util.SelectModelRenderer.option(SelectModelRenderer.java:52)
> at
> org.apache.tapestry5.util.AbstractSelectModel.visitOptions(AbstractSelectModel.java:54)
> at
> org.apache.tapestry5.util.AbstractSelectModel.visit(AbstractSelectModel.java:46)
> at
> org.apache.tapestry5.corelib.components.Select.options(Select.java:462)
> Wrapped by: org.apache.tapestry5.ioc.internal.util.TapestryException: null
> Wrapped by: org.apache.tapestry5.ioc.internal.OperationException: Render
> queue error in BeforeRenderTemplate[PagePrincipale:gabarit]:
> org.apache.tapestry5.ioc.internal.util.TapestryException
>
> The call:
>
> @Property
> private SelectModel selectionMV;
>
> @Inject
> SelectModelFactory selectModelFactory;
>
> @Property
> private MachineVirtuelle selectionMachineVirtuelle;
>
> @Property
> private MachineVirtuelleEncoder encoder;
>
> void setupRender() {
> List<MachineVirtuelle> gabarits = getGabarits();
> selectionMV = selectModelFactory.create(gabarits, "nom");
> }
>
> <t:form>
> <t:select t:id="gabarit" value="selectionMachineVirtuelle"
> model="selectionMV" encoder="encoder" />
> </t:form>
>
> I get the exception from the call to selectModelFactory.create, and the «
> gabarits » list is not empty. « nom » is an attribute of MachineVirtuelle.
>
>
>
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