That's one of the key concepts of Wicket models.
On Wed, Apr 14, 2010 at 2:04 PM, Nikita Tovstoles
<nikita.tovsto...@gmail.com> wrote:
> Yeah, guess you could do that too, but then you'd have to wrap one model
> into another (since LDM does not do property matching like CPM) + you've to
> extend LDM.
>
> On Wed, Apr 14, 2010 at 9:24 AM, James Carman
> <jcar...@carmanconsulting.com>wrote:
>
>> Why not use a LoadableDetachableModel instead of setting on
>> onBeforeRender()?
>>
>> On Wed, Apr 14, 2010 at 12:10 PM, Nikita Tovstoles
>> <nikita.tovsto...@gmail.com> wrote:
>> > If you're using a CPM there's no need to explicitly set models for child
>> > components. Also think about what you want to happen on page reload.
>> > Generally I'd imagine you want current data, so set CPM's object on
>> > Page.onBeforeRender():
>> >
>> > public class EmployeeMain extends BasePage{
>> >
>> > final private Form<Contact> employeeForm;
>> >
>> > public EmployeeMain()
>> > {
>> > //super(); //no need - call implied
>> > employeeForm = new Form<Contact>("employeeContactForm", new
>> > CompoundpropertyModel(null)); //we'll set model object @ page render time
>> > add(employeeForm);
>> > employeeForm.add(new TextField<String>("firstName")); //assuming
>> existence
>> > of String contact.getFirstName() method
>> > employeeForm.add(new TextField<String>("lastName"));
>> > }
>> >
>> > @Override
>> > public void onBeforeRender()
>> > {
>> >
>> employeeForm.setDefaultModelObject(getEmployeeSession().getEmployee().getEmpInfo());
>> > //get up-to-date Contact and set as CPM's object
>> > super.onBeforeRender(); //have to call to allow page children to render
>> > themselves
>> > }
>> >
>> > that's it. Note that if you set CPM's object in page constructor, then on
>> > page refresh, Contact won't be updated (because constructor won't run,
>> but
>> > onBeforeRender() will).
>> >
>> >
>> >
>> > On Wed, Apr 14, 2010 at 8:39 AM, David Hamilton <
>> > dhamil...@hermitagelighting.com> wrote:
>> >
>> >>
>> >> I'm a new Wicket using trying to figure out how to populate a form's
>> >> initial value with data from a bean (that is in the session already).
>> >> I've actually got it working, but I don't think I'm doing the best way.
>> >> public final class EmployeeMain extends BasePage {
>> >> public EmployeeMain() {
>> >> super ();
>> >> Form employeeForm=new Form("employeeContactForm");
>> >> Contact contact=getEmployeeSession().getEmployee().getEmpInfo();
>> >> employeeForm.setModel(new CompoundPropertyModel(contact));
>> >> add(new TextField("firstName",new
>> >> Model(contact.getFirstName())));
>> >> add(new TextField("lastName"));
>> >>
>> >> }
>> >>
>> >> My issue is with this line:
>> >> add(new TextField("firstName",new Model(contact.getFirstName())));
>> >> Should I have to set the model even though I'm binding the form to a
>> >> bean has this property?
>> >> What is the correct way to handle setting the initial form value from a
>> >> bean?
>> >>
>> >> Thanks,
>> >>
>> >> David
>> >>
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