Any example of using DataView with Forms?

[Java Programmer <jp...@gmail.com>]

hello,
I have problem with setting Forms on DataView. I have list of Consumer
objects, each consumer has Set of attributes, I wanted to add
DropDownChoice with all attributes, when pressing Add consumer would
get new attribute to its Set, and will be saved in database. Quite
simply but not form me :(

Some ugly spike code:
   private class ConsumerDataView extends DataView {

        public ConsumerDataView(String id, ConsumerDataProvider dataProvider) {
            super(id, dataProvider);
        }

        protected void populateItem(Item item) {
            final Consumer consumer = (Consumer) item.getModelObject();
            item.setModel(new CompoundPropertyModel(consumer));
            item.add(new Label("name"));

            Form addAttributeForm = new Form("addAttributeForm") {
			    protected void onSubmit() {
                    System.out.println(getModel().getObject());
                }
		    };
            /* AttributeDescriptorProvider attributeDescriptorProvider
= new AttributeDescriptorProvider();
            DropDownChoice attributeDescriptor = new
DropDownChoice("attributeDescriptors",
                new PropertyModel(attributeDescriptorProvider,
"attributeDescriptor"),
getAttributeDAO().getAllAttributeDescriptors()); */

            DropDownChoice attributeDescriptor = new
DropDownChoice("attributeDescriptors", new Model(new
AttributeDescriptor()),
                getAttributeDAO().getAllAttributeDescriptors());

            addAttributeForm.add(attributeDescriptor);
            item.add(addAttributeForm);
        }
}

Submiting this form results in WicketMessage: No get method defined
for class: class com.test.entities.Consumer expression:
addAttributeForm
I consider that addAttributeForm doesn't belongs to object, but does
this mean that I cannot nest forms in data view?

HTML code of form:
<tr wicket:id="consumers">
                <td>
                    <form style="margin:0;" wicket:id="addAttributeForm">
                        <select wicket:id="attributeDescriptors">
                            <option>[option]</option>
                        </select>
                        <input type="submit" value="Add" />
                    </form>
                </td>
                <td>
                    <input type="checkbox" wicket:id="selected" />
                </td>
</tr>

Any idea what should be done to get it work?

Best regards,
Adr

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Re: Any example of using DataView with Forms?

[Newgro <pe...@gmx.ch>]

Hi Adr,

http://www.cs.tut.fi/~jkorpela/forms/tables.html Here  they say that you
have to put the form around the table. Maybe it works for you.

Cheers
Per
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Re: Any example of using DataView with Forms?

[Java Programmer <jp...@gmail.com>]

Oh I did it ...
The previous code need small changes:
Model model = new Model(new AttributeDescriptor());
addAttributeForm.setModel(model);
DropDownChoice attributeDescriptor = new
DropDownChoice("attributeDescriptors", model,
getAttributeDAO().getAllAttributeDescriptors());

and then we can use:
protected void onSubmit() {
                    AttributeDescriptor attributeDescriptor =
(AttributeDescriptor) getModel().getObject();
                    consumer.getAttributeDescriptor().add(attributeDescriptor);
                    try {

getConsumerService().changeAttributesDescr(consumer.getName(),
consumer.getAttributeDescriptor());
                    } catch (ConsumerException e) {
                        e.printStackTrace();
                    }
                }

consumer also was removed from model (removed line item.setModel(new
CompoundPropertyModel(consumer)); )
so form could its own model ...
Maybe there is better solution for this, but that is working so it
maybe helps someone  ....
Best regards,
Adr

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