Doh, I should have thought of that myself. That'll teach me to send a
question at the end of the day. Thanks for taking the time to answer my
question, Bas and Igor.
Regards,
Linda
Bas Gooren wrote:
Linda,
Without looking at your question very long I noticed that you supply
your component with a static List<Author>.
This means that this list is only retrieved once (at initialization).
It sounds like you want it to be refreshed when other components
change their input. This would mean you need to supply a Model which
returns a List<Author>; That way when you re-render the component
through AJAX, it reloads the list of authors.
Regards,
Bas
----- Original Message ----- From: "Linda van der Pal"
<lvd...@heritageagenturen.nl>
To: <users@wicket.apache.org>
Sent: Wednesday, August 19, 2009 4:54 PM
Subject: How do I get my DropDownChoice to refresh the list of choices
with Ajax?
I have a page with a dropdown list on it with authors. If I enter a
new book I want my fields to be filled based on the ISBN. This works
just fine. But now I want those fields to be filled with data I
collect from the internet, meaning that it isn't always already in my
database, and therefor the author might not yet be in the list. I
have already decided to save the new author so I can select it in the
list, but the list isn't updated, and I can't figure out how to get
it to update.
Here are some pieces of code I think are relevant:
This is how I create the authorfield:
authorField = new MultiSelectFieldSwitchPanel("authors",
dataRetriever.fetchAuthors(), new PropertyModel(this, "book.authors"));
dataRetriever.fetchAuthors return a List<Author>
Here's the constructor of MultiSelectFieldSwitchPanel which extends
FormComponentPanel:
public MultiSelectFieldSwitchPanel(final String id, final List<?
extends DomainObject> authors, final IModel<List<Author>> model) {
super(id, model);
lmc = new ListMultipleChoice("selectField", new
PropertyModel<List<Author>>(this, "selectedObjects"), authors, new
ChoiceRenderer<DomainObject>("name", "id"));
init(lmc);
}
The init method adds a link to swap the lmc for a textfield where new
authors can be entered, which is not really relevant in this case.
I have of course already added authorField to the AjaxRequestTarget
in the behavior that is triggered by updating the ISBN.
Regards,
Linda
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