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From Rich_m <rmcal...@caris.com>
Subject Re: Attribute OGNL evaluation issue on struts tag in tag file
Date Tue, 10 Feb 2009 15:24:55 GMT

I'm having the same problem, posted it on the opensymphony ognl forum here:

http://forums.opensymphony.com/thread.jspa?messageID=625477


QZ wrote:
> 
> We were using JSP EL expression to evaluate parameter value passed from a
> custom tag to struts tag defined in that custom tag file. After we
> upgraded Struts from 2.0.9 to 2.0.14, we had to modify struts tag defined
> in our tag file since JSP EL expression is not allowed any more in struts
> tag because of changes from WW-2107. 
> 
> One problem is that, some OGNL expression parameter value can not be
> treated as expression any more
> when the paratemeters reach Struts tag. The value (such as "top") is
> always treated as string literal "'top'"
> in free marker therefore never been evaluated (returns "top" string as
> result back).
> 
> Here is an example:
> 
> We pass "top" as listKey attribute value from customed tag defined in
> select.tag.
> If we don't check (if listkey=='top'), it would pass it as string literal
> "'top'" to free marker 
> instead of "top" which get evaluated.
> 
> WAS: 
> 
> <s:select name="${name}" label="%{getText('${label}')}" list="${list}"
> listKey="${listKey}" listValue="${listValue}" headerValue="${headerValue}"
> headerKey="${headerKey}"                  size="${size}"
> emptyOption="${emptyOption}"   tooltip="%{getTex….
> 
> 
> NOW: 
> 
> <c:if test="${list != null}">    <s:set name="list"
> value="%{getList(#attr.list)}"/></c:if>
>  <s:select name="%{#attr.name}" label="%{getText(#attr.label)}"   
> list="%{#attr.list}" listKey="#attr.listKey
> =='top'?top:getString(#attr.listKey)"
> listValue="getString(#attr.listValue)" headerValue="%{#attr.headerValue}"
> headerKey="%{#attr.headerKey}" size="%{size}"
> emptyOption="%{#attr.emptyOption}"
> 
> 
> Is there a right (easy) way to still pass OGNL expression to struts tag
> which is used in tag file?
> 
> Thanks,
> Qiang
> 
> 
> 

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