try: *new* CheckGroup("sectorCheckGroup", new Model());
the check group doesn't have a model where it can store the values in.
johan
On 1/5/07, Lost Still Lost <[EMAIL PROTECTED]> wrote:
Hello I'm Yuri.
I was trying to make use of a ListView instance to get checkboxes for
strings that I have stored in a database
But I get this error when trying to access the page containing the
ListView instance.
*WicketMessage: CheckGroup [4:searchform:sectorCheckGroup] contains a null
model object, must be an object of type java.util.Collection*
*Root cause:*
*wicket.WicketRuntimeException: CheckGroup [4:searchform:sectorCheckGroup]
contains a null model object, must be an object of type
java.util.Collection
*
My HTML page which consist of the ListView code is as follows:
<
span wicket:id="sectorCheckGroup">
<label>select one or more numbers (CheckGroup)
<span wicket:id="sectors">
<input type="checkbox" wicket:id="check"/>
<span wicket:id="naam">[this is where number will be]</span>
</span>
</label> </span>
My Model class have the following getter method:
*
public
* List getSectorCheckGroup()
{
* return* sectorCheckGroup; }
sectorCheckGroup is a *List *type
My Page/Java class have the following code that refers to the ListView:
List se = Arrays.*asList*(*new* String[] {"Primair", "Special", "Superb
special"});
sectors
= *new* CheckGroup("sectorCheckGroup");
add(
sectors);
sectorList = *new* ListView("sectors", se)
{
* protected* *void* populateItem(ListItem item)
{
item.add(
*new* Check("check", item.getModel()));
item.add(*new* Label("name", item.getModelObjectAsString()));
};
};
sectors.add(sectorList);
My Code is pretty much the same as the one in the wicket-examples(the
Forminput example which uses ListView)
What is it that I'm doing wrong then?
Anyone?
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