Hi,
Thanks for your answer. I forgot to add the
public void onPrepare() and therefore the list was empty.
Thanks.
One addition for the tapestry wiki page.
I think it is better to replace:
String accessActualName = transformation.addField(Modifier.PRIVATE,
"org.apache.tapestry5.ioc.services.PropertyAccess", "_access");
into:
String accessActualName = transformation.addField(Modifier.PRIVATE,
PropertyAccess.class.getName(), "_access");
So we use no hardcoded package names.
> Joe,
>
> There were some errors on the wiki page and I've already corrected it, but
> was nothing related with this problem.
> I can't reproduce it here, can you show some more of your code so I can test
> it here?
> >
> > I have been debugging and noticed that the failure is in the
> > GenericValueEncoder.toValue method
> > The idFieldAdapter property is null and therefore it can't find a match.
> >
> > And why is the idFieldAdapter null?
> > Because in the constructor(see below), the list parameter was null after
> > submitting the form.
> > Do I need to persist my List of objects? I don't want this....
> > And I think the example on the wiki doesn't work as well.
> >
> > Does anyone had this error earlier?
> >
> >
> > public GenericValueEncoder(List<T> list, String idField, PropertyAccess
> > access) {
> > if (idField != null && !idField.equalsIgnoreCase("null")) {
> > if (list.size() > 0) {
> > this.idFieldAdapter =
> > access.getAdapter(list.get(0).getClass()).getPropertyAdapter(idField);
> > }
> > }
> > this.list = list;
> > }
> >
> > > Hello
> > >
> > > I use the select component with the @InjectSelectionModel annotation as
> > described here:
> > > http://wiki.apache.org/tapestry/Tapestry5AnotherSelectWithObjects
> > >
> > > <select t:type="select" t:id="categorySelect"
> > model="categoriesSelectionModel" encoder="categoriesValueEncoder"
> > value="selectedCategory" />
> > >
> > > The select is nicely loaded with categories. Next I submit the form and I
> > notice that the setSelectedCategory method is called. But it prints
> > "setSelectedCategory: null"
> > > See below for some the corresponding java code. What am I doing wrong?
> > Why is the selectedCategory null, after I have selected a category and
> > submitted the form?
> > >
> > > @InjectSelectionModel(labelField = "name", idField = "id")
> > > @Property
> > > private List<Category> categories = new ArrayList<Category>();
> > >
> > > @Persist
> > > private Category selectedCategory;
> > >
> > > public void setSelectedCategory(Category selectedCategory) {
> > >
> > > System.out.println("setSelectedCategory: " + selectedCategory);
> > >
> > > this.selectedCategory = selectedCategory;
> > >
> > > }
> > >
> > > public Category getSelectedRootCategory() {
> > > return selectedRootCategory;
> > > }
> > >
> > >
> > >
> > > _________________________________________________________________
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> >
> > _________________________________________________________________
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>
>
>
>
> --
> Atenciosamente,
>
> Marcelo Lotif
> Programador Java e Tapestry
> FIEC - Federação das Indústrias do Estado do Ceará
> (85) 3421-5910
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