[WICKET-1657] AjaxFallbackDefaultDataTable gives misleading error when fragment markup cannot be found

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Won't Fix
• Affects Version/s: 1.3.0-final
• Component/s: wicket-extensions
• Assignee: Igor Vaynberg
• Reporter: Nick Johnson
• Created: 23/May/08 01:11
• Updated: 02/Nov/08 11:26
• Resolved: 30/May/08 18:43

Description

If you call cellItem.add(new Fragment("foo","bar", myPage, model), but the fragment markup for "bar" isn't found in the markup for myPage, AjaxFallbackDefaultDataTable complains, "failed to add a
component with id [cell] to the provided [cellItem] object." The error suggests making sure that cellItem.add was called.

This error can be misleading, especially since cellItem.add was called. What really happened was the fragment with a given ID wasn't found, which should really have been an error in its own right.

It would be nice if the error message gave a better description indicating the reason why the component failed to add (e.g., an error in handling the Fragment).