User error :)
review what element your adding the inner list to... looks like your
adding it to the ListView instead of the Item.
Change:
this.add(projects);
to
item.add(projects);
- Brill Pappin
On 26-Mar-09, at 12:50 PM, Luther Baker wrote:
I'm trying to create a page - similar to Jira's BROWSE PROJECTS.
My initial take amounts to a loop in a loop.
The outer loop is CATEGORIES and the inner loop is PROJECTS in said
category.
| CATEGORY 1
| p1
| p2
| p3
| CATEGORY 2
| p4
| p5
| p6
...
I've attached code below but if I removed the nested loop, I can
easily loop
over just CATEGORIES but as soon as I add the nested loop, it fails
with the
following
WicketMessage: Error attaching this container for rendering: [Page
class =
com.fuzzybearings.milestones.web.page.user.ProjectsPage, id = 3,
version =
0]
Root cause:
java.lang.IllegalArgumentException: A child with id 'projects' already
exists:
[MarkupContainer [Component id = categories]]
My intuition tells me that 'wicket:id="projects"' is repeating since
it is
contained in an outer loop ... but I'm not sure how else to identify
this
type of structure in a general way. Is there a loop container more
suited to
this ... open to suggestions.
Thanks in advance,
-Luther
*.html snippet
<div wicket:id="categories">
<table>
<tr wicket:id="projects">
<td><a wicket:id="projectLink" href="#"><span
wicket:id="projectLabel">[project]</span></a></td>
</tr>
</table>
</div>
*.java snippet
public ProjectsPage(ResourceModel bodyTitle)
{
super(bodyTitle);
ListView categories = new ListView("categories",
this.getCategories())
{
@Override
protected void populateItem(ListItem item)
{
Category category = (Category) item.getModelObject();
ListView projects = new ListView("projects",
ProjectsPage.this.getProjects(category))
{
@Override
protected void populateItem(ListItem item)
{
Project project = (Project)
item.getModelObject();
Link link = new Link("projectLink",
item.getModel())
{
@Override
public void onClick() { ... }
};
link.add(new Label("projectLabel",
project.getName()));
item.add(link);
}
};
this.add(projects);
}
};
this.add(categories);
}
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