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https://issues.apache.org/jira/browse/WW-4631?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christoph Nenning reopened WW-4631:
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Assignee: Christoph Nenning
{quote}
Isn't related to WW-4628?
{quote}
Nope, is not related.
As stated in documentation: the tag behaves differently when value is set
either via {{value=}} attribute or via tag-body. Probably it was not intended
to get different behavior for empty parameters.
I changed to take {{suppressEmptyParameters}} into account when value is set
via body as well. And I made sure empty parameters are included when set via
{{value=}}.
I also updated javadoc. There were other issues with it, too :)
> Empty <s:param name="p1" value=""/> is being supressed
> ------------------------------------------------------
>
> Key: WW-4631
> URL: https://issues.apache.org/jira/browse/WW-4631
> Project: Struts 2
> Issue Type: Bug
> Components: Plugin - Tags
> Affects Versions: 2.3.28
> Reporter: Greg Lindholm
> Assignee: Christoph Nenning
> Priority: Minor
> Fix For: 2.3.31, 2.5.3
>
>
> I discovered a problem with the <s:param /> tag when attempting to pass an
> empty parameter.
> <s:url var="myUrl" action='MyAction'>
> <s:param name="p1" value=""/>
> <s:param name="p2"></s:param>
> </s:url>
> I was attempting to pass an empty parameter using the "p1" syntax above and
> the parameter was being suppressed.
> Using the "p2" syntax it works correctly, and the empty parameter is included.
> The doc http://struts.apache.org/docs/param.html says that
> "suppressEmptyParameters" defaults to false but the p1 parameter was always
> suppressed even if I added suppressEmptyParameters="false".
> Also the doc http://struts.apache.org/docs/param.html has an incorrect
> example on how to use the suppressEmptyParameters option.
> <s:param name="suppressEmptyParameters" value="true"/>
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