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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