have you considered the use of a Renderer in the dropdownChoice?
DropDownChoice(java.lang.String id, IModel model, java.util.List data,
IChoiceRenderer renderer)
FixedCharges selected=new FixedCharges();
DropdownChoice drop=new DropdownChoice("YourId",new
CompoundPropertyModel(selected),listFc ,new
ChoiceRenderer("YourDisplayExpression","YourIdExpression"));
Cheers
2009/3/20 Bigcalm <[email protected]>
>
> Heya, I'm trying to figure out the "best" way of handling drop down choices.
> It seems a bit overcomplicated and I'm not sure we're using them in the
> correct way?!!
>
> The database function to retrieve my data will be:
>
> List<FixedCharges> listFc = enquiryController.getAvailableFixedCharges("");
>
> ....
> So I now have a list of primitive hibernate objects with lots of getters and
> setters.
> ....
> I want my dropdownchoice to use more than one field from my original
> FixedCharges list for the description, so the text in the description field
> is...
>
> fixedCharges.getDescription() + " - " + fixedCharges.getValue();
>
> The key value I want returned though, is the unique key from that
> table/object - fixedCharges.getFChargeCode();
>
> ....
> I've already worked out a couple of ways to do it, but I don't like either
> of them!!
>
> My first way was to iterate through the fixedcharges list and create a
> DropDownItem array before adding it to the form. This seems an unnecessary
> iteration and I'd quite like to have the full fixedCharge object back when
> the form is submitted (which this method prevents - I have to go and
> reselect it from the database).
> My second way was to try to use a separate custom IChoiceRenderer class, but
> I don't really like this method either, it seems very complex and difficult
> to extend to a general case scenario. I don't really want to have
> bazillions of IChoiceRenderer implementations one for every class I want a
> drop down list on. Maybe I could have an implementation of the
> IChoiceRenderer as an unnamed inner class (which would be best I think) but
> I can't figure out how you do this.
>
> What's the best way to do it? It must be a reasonably common problem.
>
> Cheers!
> --
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> http://www.nabble.com/DropDownChoice-confusion%21-tp22621465p22621465.html
> Sent from the Wicket - User mailing list archive at Nabble.com.
>
>
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