Re: [Wicket-user] CompoundPropertyModels

[Martijn Dashorst]

On 9/6/05, Ralf Ebert <[EMAIL PROTECTED]> wrote:

Hi,
- when having a page using a CompoundPropertyModel which has a form
using a CompoundPropertyModel, how do I get the form's model to map
to a property of the page's model? (the pages model is bound to
"house", and I want the form's model to be bound to " house.room" so
the forms components will be bound to "house.room.table" instead of
"house.table" :) just using the id "room" for the form didn't do the
trick)

This would be done using: new CompoundPropertyModel(new PropertyModel(getPage().getModel(), "room"))

However, why don't you create a RoomEditForm, which looks something like this:
public RoomEditForm extends Form
{
    public RoomEditForm(String id, Room room)
    {
        super(id, new CompoundPropertyModel(room));
        // ... add components
    }
    protected void onSubmit()
    {
        // save or something else...
    }
}

- The property a ListView is bound to needs to be a Set (in my app).
ListView requires List. Is there a way to use ListView with a set in
a convenient way?

Currently not. The Listview is dependend on List because the default implementation uses indexes to gain access to the elements. That is not possible using Set.
 

- What is the preferred way to get the CompoundPropertyModel's model
object from a component thats bound via the CompoundPropertyModel?

   - getModel().getObject(null) which gives the root model object
which is the same in most cases
   - getParent().getModelObject()
   - or something different like binding the CoProMo (that's a nice
abbreviation) to the button itself?

As far as I know, there isn't 'a' preferred way. Choose whatever you like most.

I prefer option 1 or 2 (I like option 2 better).

Martijn