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https://issues.apache.org/jira/browse/WICKET-4779?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13460514#comment-13460514
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Brian Laframboise commented on WICKET-4779:
-------------------------------------------
Thank you for your quick reply! I'll modify the code as you suggest and I'll
get back to you.
It does make more sense that Fragments evolved more quickly than my
understanding of them rather than Wicket 6.0.0 being horribly broken ;-)
> Fragments within elements with wicket components are no longer found
> --------------------------------------------------------------------
>
> Key: WICKET-4779
> URL: https://issues.apache.org/jira/browse/WICKET-4779
> Project: Wicket
> Issue Type: Bug
> Components: wicket
> Affects Versions: 6.0.0
> Reporter: Brian Laframboise
> Attachments: WICKET-4779-quickstart.zip
>
>
> During a migration from Wicket 1.4.21 to 6.0.0, I've discovered that during
> Fragment resolution Wicket will no longer find a Fragment if the Fragment is
> nested within an element that has a wicket component attached to it.
> Here's the pertinent excerpts from the attached quickstart which reproduces
> the issue:
> HomePage.java
> public class HomePage extends WebPage {
> public HomePage(final PageParameters parameters) {
> super( parameters );
> // remove body and error no longer appears
> add( new WebMarkupContainer( "body" ) );
> }
> }
> HomePage.html
> <html xmlns:wicket="http://wicket.apache.org";>
> <!-- remove wicket-id of body and error goes away -->
> <body wicket:id='body'>
> <wicket:child/>
> </body>
> </html>
> ChildPage.java
> public class ChildPage extends HomePage {
> public ChildPage(final PageParameters parameters) {
> super( parameters );
> add( new Fragment( "placeholder", "fragment", this ) );
> }
> }
> ChildPage.html
> <html xmlns:wicket="http://wicket.apache.org";>
> <wicket:extend>
> <div wicket:id='placeholder'>[Placeholder]</div>
> <wicket:fragment wicket:id='fragment'>Fragment</wicket:fragment>
> </wicket:extend>
> </html>
> The error generated is:
> Failed to handle: <wicket:container wicket:id="placeholder">. It might be
> that no resolver has been registered to handle this special tag. But it also
> could be that you declared wicket:id=placeholder in your markup, but that you
> either did not add the component to your page at all, or that the hierarchy
> does not match.
> MarkupStream: [markup =
> file:/C:/dev/workspaces/eclipse32/quickstart/myproject/target/classes/com/mycompany/ChildPage.html
> <wicket:extend>
> <wicket:container wicket:id="placeholder">[Placeholder]</wicket:container>
> <wicket:fragment wicket:id="fragment">Fragment</wicket:fragment>
> </wicket:extend>, index = 2, current = '<wicket:container
> wicket:id="placeholder">' (line 0, column 0)]
> at
> org.apache.wicket.markup.MarkupStream.throwMarkupException(MarkupStream.java:526)
> at
> org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1415)
> ...
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