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https://issues.apache.org/jira/browse/TAP5-311?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12645896#action_12645896
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Howard M. Lewis Ship commented on TAP5-311:
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I suspect the problem here is that BeanDisplay has an internal Loop that's
driven off of the model property of BeanDisplay, and that is null with no
form-aware logic to set it up, the way that BeanEditor does.
The solution is to provide the model parameter.
> NPE in BeanDisplay if used in a form with a default model
> ---------------------------------------------------------
>
> Key: TAP5-311
> URL: https://issues.apache.org/jira/browse/TAP5-311
> Project: Tapestry 5
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.0.15
> Reporter: Dan Adams
>
> Create something like this:
> <t:form>
> <t:beandisplay object="foo" include="bar" />
> </t:form>
> and submit the form. You get a NPE in beandisplay. The workaround is to
> create the model yourself.
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