Hi,
the easiest solution is declare regModel as final, then you can "do something"
as follows:
form.add(new SubmitButton("register") {
public void onSubmit() {
// do something
regModel.getObject().getUserName();
}
});
Note that declaring models as final might me dangerous, since the model
is kept in the component hierarchy but nobody detaches it. This is not
the case here though, since RegistrationInputPanel will take care of it.
Regards
Sven
On 26.02.2015 09:18, Andrew Hall wrote:
Hi all,
I have a newbie question ...
In the free online guide for Wicket - best practices section,2 listings are
provided as examples of how to encapsulate components in panels:
(http://wicket.apache.org/guide/guide/bestpractices.html#bestpractices_1)
Listing 3:// Good component
public class RegistrationInputPanel extends Panel{
public RegistrationInputPanel(String id, IModel<Registration> regModel) {
super(id, regModel);
IModel<Registration> compound = new
CompoundPropertyModel<Registration(regmodel)
Form<Registration> form = new Form<Registration>("form", compound);
// Correct: Add components to Form over the instance variable
form.add(new TextField("username"));
form.add(new TextField("firstname"));
form.add(new TextField("lastname"));
add(form);
}
}
Listing 4:public class RegistrationPage extends Page {
public RegistrationPage(IModel<Registration> regModel) {
Form<?> form = new Form("form");
form.add(new RegistrationInputPanel("registration", regModel);
form.add(new SubmitButton("register") {
public void onSubmit() {
// do something
}
});
add(form);
}
}
I infer from this example that it is possible in Wicket to decouple the
physical definition of a form (listing 3) from the code which is executed when
a form is submitted (listing 4). I suppose the point is that different pages
can reuse the same physical form and implement their own form submission logic.
Is it possible for the "// do something" in listing 4 to access the values of "username",
"firstname" & "lastname" submitted through the form defined in listing 3?
If the answer is yes, then could anyone provide a snippet of code demonstrating
how to do this? I've had a search and have not found an obvious way!
Thanks,
Andrew.
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