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https://issues.apache.org/jira/browse/TAP5-922?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13014374#comment-13014374
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Hudson commented on TAP5-922:
-----------------------------
Integrated in tapestry-5.2-freestyle #302 (See
[https://hudson.apache.org/hudson/job/tapestry-5.2-freestyle/302/])
> Allow a null or blank value to be supplied in Link.addParameter(), and render
> out the parameter name with the missing value
> ---------------------------------------------------------------------------------------------------------------------------
>
> Key: TAP5-922
> URL: https://issues.apache.org/jira/browse/TAP5-922
> Project: Tapestry 5
> Issue Type: Bug
> Components: tapestry-core
> Affects Versions: 5.1.0.5
> Reporter: Angelo Chen
> Priority: Minor
> Fix For: 5.3.0
>
>
> I have a query string that I need to append to a Link object, the query
> string is:
> ?gender=M&country=
> Link lnk = renderLinkSource.createPageRenderLink("SamplePage");
> lnk.addParameter("gender", "M"); // this works
>
> lnk.addParameter("country", null);
> above line failed with :
> RequestExceptionHandler Unexpected runtime exception: Parameter value was
> null or contained only whitespace.
> A null parameter should be valid in a URL, sometimes it is needed to have
> Google Analytics pick up the complete URL even it is null.
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