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https://issues.apache.org/jira/browse/WICKET-6187?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15341889#comment-15341889
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ASF subversion and git services commented on WICKET-6187:
---------------------------------------------------------
Commit 529375ee1decde83f921db3b4a9dd8e436336c42 in wicket's branch
refs/heads/wicket-7.x from [~bitstorm]
[ https://git-wip-us.apache.org/repos/asf?p=wicket.git;h=529375e ]
WICKET-6187 Enclosures rendered twice in derived component
> Enclosures rendered twice in derived component
> ----------------------------------------------
>
> Key: WICKET-6187
> URL: https://issues.apache.org/jira/browse/WICKET-6187
> Project: Wicket
> Issue Type: Bug
> Affects Versions: 7.3.0
> Reporter: Wolfgang Kritzinger
> Assignee: Andrea Del Bene
> Fix For: 8.0.0-M1, 7.4.0
>
> Attachments: WICKET6187.zip
>
>
> Minimal changes to the Quickstart causes it:
> Add this to the HomePage:
> {code:title=HomePage.html|html}
> <p wicket:enclosure="version">
> Please mention the correct Wicket version: <wicket:container
> wicket:id="version">1.5-SNAPSHOT</wicket:container>.
> </p>
> <wicket:child/>
> {code}
> And then a new derived page:
> {code:title=NewPage.java|java}
> public class NewPage extends HomePage {
> public NewPage(PageParameters parameters) {
> super(parameters);
> add(new Label("id", "test"));
> }
> }
> {code}
> {code:title=NewPage.html|html}
> <wicket:extend xmlns:wicket="http://wicket.apache.org";>
> <div wicket:enclosure="id">
> xxx
> <wicket:container wicket:id="id"></wicket:container>
> </div>
> </wicket:extend>
> {code}
> Will fail with the following exception:
> {code}
> org.apache.wicket.markup.MarkupException: The component [Component id =
> version] was rendered already. You can render it only once during a render
> phase. Class relative path: org.apache.wicket.markup.html.basic.Label:version
> at org.apache.wicket.Page.componentRendered(Page.java:211)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at org.apache.wicket.Component.rendered(Component.java:2623)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at org.apache.wicket.Component.internalRender(Component.java:2384)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at org.apache.wicket.Component.render(Component.java:2308)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at
> org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1521)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at
> org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1724)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at
> org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1699)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at
> org.apache.wicket.MarkupContainer.onComponentTagBody(MarkupContainer.java:1654)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at
> org.apache.wicket.markup.html.panel.DefaultMarkupSourcingStrategy.onComponentTagBody(DefaultMarkupSourcingStrategy.java:70)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at
> org.apache.wicket.Component.internalRenderComponent(Component.java:2565)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at
> org.apache.wicket.MarkupContainer.onRender(MarkupContainer.java:1663)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at org.apache.wicket.Component.internalRender(Component.java:2380)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at org.apache.wicket.Component.render(Component.java:2308)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at
> org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1521)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at
> org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1724)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at org.apache.wicket.Page.onRender(Page.java:879)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at org.apache.wicket.markup.html.WebPage.onRender(WebPage.java:141)
> ~[wicket-core-7.3.0.jar:7.3.0]
> at org.apache.wicket.Component.internalRender(Component.java:2380)
> ~.[wicket-core-7.3.0.jar:7.3.0]
> .....
> {code}
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