Hi,
I see some very unexpected behavior in getting the model object inside a
list view. Here is my case:
-- The data classes
class Course {...}
class Person { private List addresses; ...getter/setters...}
class Address { private String street; private String city;
...getter/setters... }
-- The components
class MyPage extends Page {
public MyPage(...) {
...
setModel(new CompoundPropertyModel(new Course(...))); //
<-------- setting Course as model object
add(new MyPanel(...));
}
}
class MyPanel extends Panel {
public MyPanel(...) {
setModel(new CompoundPropertyModel(new Person())); //
<------- setting Person as model object
add(new ListView("addresses")) {
protected void populateItem(ListItem item) {
assert item.getModelObject() instanceof Address; //
<----- assert succeeds
item.add(new
Label("street")); // <-----
WicketException during rendering
}
}
}
}
--The problem.
The assert in the method populateItem holds. However, the label will try
to get the "street" property from a 'Course' instance. I expected it to
get the property from the Address instance that was also seen in the assert.
--A possible cause.
If you debug the method onComponentTagBody() in Label(), you eventually
see that the parent of the Label is a ListItem, but the parent of the
ListItem is MyPage! I expected the parents to be a ListView, and then a
MyPanel and only then a MyPage.
Is this a bug or I am missing something?
Regards,
Erik.
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