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https://issues.apache.org/jira/browse/SLING-355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12585618#action_12585618
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Tobias Bocanegra commented on SLING-355:
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well, an empty string can also mean "i see this field, but i intentionally
leave it empty".
as for numbers, i agree that an empty string can be ignored or even force a
removal of the property.
however i would try to set the value anyways and if it fails try to remove it.
> If you want to leave the property untouched, don't post it.
which is a problem if you can't (or don't want to) modify the DOM of the form.
> Empty Request Parameters should be handled as not present
> ---------------------------------------------------------
>
> Key: SLING-355
> URL: https://issues.apache.org/jira/browse/SLING-355
> Project: Sling
> Issue Type: Bug
> Components: ujax
> Reporter: Carsten Ziegeler
> Assignee: Carsten Ziegeler
> Fix For: 2.0.0
>
> Original Estimate: 0h
> Remaining Estimate: 0h
>
> When the sling post servlet tries to set a property which value is empty, it
> fails to set the property value if the proper type is not a string as it for
> example tries to convert the empty string into a long - which fails.
> Therefore the servlet should treat empty values as not existing ones and
> rather remove the property.
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