Warren,
If you don't mind your "wicket:id"s becoming rather misleading and arguably
slightly harder to follow (magical) Java, you can even do ...
public class HomePage extends WebPage {
private List<Vendor> vendors = Arrays.asList(new Vendor("v1"),
new Vendor("v2"));
private Vendor vendor = new Vendor("default vendor");
public HomePage(final PageParameters parameters) {
setDefaultModel(new CompoundPropertyModel<HomePage>(this));
Form<Void> form = new Form<Void>("form");
add(form);
form.add(new ListChoice<Vendor>("vendor", vendors));
Form<Vendor> editForm = new Form<Vendor>("vendorEditForm");
add(editForm);
editForm.add(new TextField<String>("vendor.name"));
}
private class Vendor {
private String name;
Vendor(String name) {this.name = name;}
@Override public String toString() {return name;}
}
}
I haven't worked out how to properly paste html into nabble, so drop me a
line at the jWeekend site if you want the template code to go with this, or
a QuickStart.
Any comments on the type-parameters used above anybody?!
Regards - Cemal
jWeekend
OO & Java Technologies, Wicket Training and Development
http://jWeekend.com
Warren Bell-3 wrote:
>
> In your second example the Vendor in the vendorModel becomes the
> selected Vendor from the ListChoice and that Vendor name property
> becomes the value of the TextField?
>
> -----Original Message-----
> From: jWeekend [mailto:jweekend_for...@cabouge.com]
> Sent: Friday, August 14, 2009 3:47 PM
> To: users@wicket.apache.org
> Subject: Re: Model question ?
>
>
> Warren,
>
> ... and if you prefer using a CPM for your "vendorEditForm"s:
>
> public class HomePage extends WebPage {
> private List<Vendor> vendors = Arrays.asList(new Vendor("v1"),
> new
> Vendor("v2"));
> private Vendor vendor = new Vendor("default vendor");
> public HomePage(final PageParameters parameters) {
> IModel vendorModel = new PropertyModel<Vendor>(this, "vendor");
> Form<Void> form = new Form<Void>("form");
> add(form);
> // use your existing LDM instead of this hard-wired
> // List of vendors but
> // make sure you merge your edits properly!
> form.add(new ListChoice<Vendor>("vendors",
> vendorModel, vendors));
> // using a PropertyModel per field
> Form<Void> editForm1 = new Form<Void>("vendorEditForm1");
> add(editForm1);
> editForm1.add(new TextField<Vendor>("name",
> new PropertyModel<Vendor>(this, "vendor.name")));
> // using a CompoundPropertyModel
> Form<Vendor> editForm2 = new Form<Vendor>("vendorEditForm2",
> new CompoundPropertyModel<Vendor>(vendorModel));
> add(editForm2);
> editForm2.add(new TextField<Vendor>("name"));
> }
>
> private class Vendor implements Serializable{
> private String name;
> protected Vendor(String name) {this.name = name;}
> public String toString(){return name;}
> // safer to have accessors & mutators
> }
> // safer to have accessors & mutators }
>
> Regards - Cemal
> jWeekend
> OO & Java Technologies, Wicket Training and Development
> http://jWeekend.com
>
>
>
> Warren Bell-3 wrote:
>>
>> How should I set up my model for the following situation. I have a
>> form with a ListChoice and a TextField. The TextField needs to access
>> a property of the object selected of the ListChoice. I have it all
>> working using a ValueMap, but that seems like overkill to use a
>> ValueMap for one object. Here is how I have it:
>>
>> super(new CompoundPropertyModel<ValueMap>(new ValueMap()));
>>
>> ListChoice<Vendor> vendorListChoice = new ListChoice<Vendor>("vendor",
>
>> new LoadableDetachableModel<List<Vendor>>(){...}, new
>> IChoiceRenderer<Vendor>(){...});
>>
>> TextField<String> accountNumberField = new
>> TextField<String>("vendor.accountNumber");
>>
>> I thought I could do something like this:
>>
>> super(new CompoundPropertyModel<Vendor>(new Vendor()));
>>
>> The ListChoice is the same as above and the TextField like this:
>>
>> TextField<String> accountNumberField = new
>> TextField<String>("accountNumber");
>>
>> The problem with this is that the ListChoice is trying to set a
>> property on the model named vendor when I realy want the selected
>> ListChoice vendor object be the model object and have the TextField
>> access the accountNumber property of the ListChoice vendor.
>>
>> How should I set up my model to deal with this type of situation or is
>
>> a ValueMap the best way?
>>
>> Thanks,
>>
>> Warren
>>
>>
>>
>>
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>>
>>
>
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