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https://issues.apache.org/jira/browse/TAP5-649?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Howard M. Lewis Ship closed TAP5-649.
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Resolution: Fixed
Fix Version/s: 5.1.0.4
> Forms containing loop components which contain no form elements still encode
> into t:formdata hidden field
> ---------------------------------------------------------------------------------------------------------
>
> Key: TAP5-649
> URL: https://issues.apache.org/jira/browse/TAP5-649
> Project: Tapestry 5
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.1.0.0, 5.1.0.1, 5.1.0.2, 5.1.0.3, 5.0.18
> Reporter: Andy Blower
> Assignee: Howard M. Lewis Ship
> Fix For: 5.1.0.4
>
>
> Updating our app to 5.1 has caused us an issue with using loop components
> nested inside form components, we now need to provide a ValueEncoder whereas
> we didn't in 5.0.18 which just serialised the loop values into t:formdata. In
> many cases we have loops that don't have any input or form elements inside
> them, but that still need to be contained by the form tag in the HTML. The
> issue is that the loop component has a 'volatile' parameter to switch off the
> state saving, but this expects the iterator to still be available when the
> form is submitted, which it isn't and doesn't need to be.
> I think that the loop component needs the facility to be form agnostic, so
> that FormSupport (from the environment) is ignored / not set. My suggestion
> is that the volatile parameter is deprecated (can't remove for backwards
> compatability) and a new parameter 'formHandling' or 'formSupport' is added
> to the loop component which accepts three values: none, statesave, volatile.
> I think that this would be much clearer and concise than the current volatile
> boolean, which confuses everyone in my experience, but alternatively a new
> boolean for switching off form support would suffice.
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