Hi.
I create Form and RadioGroup.
MyPage class
Form form = new Form("form");
add(form);
final RadioGroup radioGroup = new RadioGroup("radioGroup", new Model());
form.add(radioGroup);
radioGroup.add(new MyDataView(new MyDataProvider()));
form.add(new Button("button") {
protected void onSubmit() {
Book book = (Book) radioGroup.getModelObject();
String title = book.getTitle();
}
});
MyDataView class
protected void populateItem(final Item item) {
Book book = (Book) item.getModelObject();
item.add(new Radio("radio", item.getModel()));
item.add(new Label("title", book.getTitle());
}
RadioGroup and its radio items(radio and title) output normally.
But when submit button is clicked, NullPointerException occur.
Book book = (Book) radioGroup.getModelObject();
This "book" object is null.
When adding ListView (not DataView) on RadioGroup, work fine.
What's wrong?
I use Wicket 1.2.
Regards,
R.A
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