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https://issues.apache.org/jira/browse/TAP5-328?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12644988#action_12644988
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Christian Köberl commented on TAP5-328:
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The problem here is that the field already cleaned up the Environment and the
Label is rendered with Heartbeat at the end of the loop.
A possible fix is to cleanup the environment later (e.g. also in Hearbeat).
> Exception when checking BeanEditor Field required in ValidationDecorator
> ------------------------------------------------------------------------
>
> Key: TAP5-328
> URL: https://issues.apache.org/jira/browse/TAP5-328
> Project: Tapestry 5
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.0.15
> Reporter: Christian Köberl
> Attachments: beaneditortest.zip,
> PropertyEditor_cleanupEnvironment.patch
>
>
> You get the following error when marking a field "required" and using it in a
> beaneditor and creating a modified ValidationDecorator asking for required
> (like HLS suggested in
> http://www.nabble.com/How-to-create-my-ValidationDecorator-in-T5--td11533833.html).
> "Render queue error in AfterRender[Index:form.editor.loop]: Failure reading
> parameter 'validate' of component core/PropertyEditBlocks:textfield: No
> object of type org.apache.tapestry5.services.PropertyEditContext is available
> from the Environment."
> The problem is also described here by Rolf Wagner:
> http://www.nabble.com/-T5--Custom-ValidationDecorator-causing-Exception-in-BeanEditor-td20084804.html
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