Re: Render queue error in BeforeRenderTemplate when using a SelectModel

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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