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https://issues.apache.org/jira/browse/TAP5-2308?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14241205#comment-14241205
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Jochen Kemnade commented on TAP5-2308:
--------------------------------------
It looks like the fragment's client ID that is passed to the
{{t5/core/form-fragment:linkTrigger}} is null. Probably the initialization
happens to early.
> TriggerFragment mixin is not working if it is applied for a field in a
> beaneditor
> ---------------------------------------------------------------------------------
>
> Key: TAP5-2308
> URL: https://issues.apache.org/jira/browse/TAP5-2308
> Project: Tapestry 5
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.4
> Reporter: Balázs Palcsó
> Priority: Minor
>
> I am trying to use FormFragment with TriggerFragment on checkbox in the way
> it is documented at:
> http://tapestry.apache.org/5.3/apidocs/org/apache/tapestry5/corelib/components/FormFragment.html
> Here is my template snippet
> --------------------------------
> {code}
> <t:beaneditor object="job"
> include="title,description,proposalDeadline,jobCompletionDeadline,tags,canBeDoneRemotely">
> <p:canBeDoneRemotely>
> <t:checkbox t:id="canBeDoneRemotely" value="job.canBeDoneRemotely"
> t:mixins="triggerfragment" fragment="jobAddress"/>
> <t:label for="canBeDoneRemotely"/>
> </p:canBeDoneRemotely>
> </t:beaneditor>
> <t:formfragment t:id="jobAddress" visible="!job.canBeDoneRemotely">
> <t:beaneditor object="job" include="address" />
> </t:formfragment>
> {code}
> The error message I get
> --------------------------------
> The event is bound properly and gets triggered when clicking on the checkbox,
> but I get the this error message:
> Uncaught Error: Attempt to wrap a null DOM element dom.js:411
> wrapElement dom.js:411
> update form-fragment.js:36
> wrapped dom.js:49
> jQuery.event.dispatch jquery.js:4624
> jQuery.event.add.elemData.handle jquery.js:4292
> The reason:
> ------------------
> In form-fragment.js at line 36 spec.fragmentId is undefined.
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