2007/3/30, Toscano <[EMAIL PROTECTED]>:
countries = new DropDownChoice ("country",
new Model() {
public List getObject() {
return getCountries();
}
}, getCountries(),
new CountryChoiceRenderer());
Skip the second getCountries() call - you don't need that - and also this
way you lose the selected country (check the javadoc for DDC). Wicket Models
may be hard to grasp at first, I suggest you read the wiki again.
Remember: component's are just components they don't (or at least shouldn't)
store domain objects. Models do that. If you pass a List to DropDownChoice
it will be wrapped in a static Model in the constructor and won't be
affected by later changes. If you pass in a Model which calls getCountries()
on each request - your Model will refresh the list on each request.
My solution for you would be to write:
countries = new DDC("country", new PropertyModel(this, "countries), new
CountryChoiceRenderer());
This of course needs a CompoundPropertyModel somewhere up the component tree
that stores a bean that has getCountry() and setCountry() methods... If you
want to store your selected country elsewhere, you will need something
similar to the following code:
countries = new DDC("country", new PropertyModel(countryBean,
"selectedCountry"), new PropertyModel(this, "countries), new
CountryChoiceRenderer());
--
János Cserép - [EMAIL PROTECTED]
Mobile: +36 20 4328730
Web: http://www.szeretgom.hu
Skype: cserepj
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