Problem solved. It was a bit murky, as it happened. The key is the
addition of the uid attribute in the display:table tag. In JSP 2.0, or
maybe it's in WebLogic 9.0, or maybe it's something to do with the change
of seasons, I dunno, id="xxx" no longer works to put the object xxx in the
page scope of the pageContext (which is the first place that ${xxx} looks
for the EL object). I'm not sure if it puts it ANYWHERE in that case
(although the id attribute still works fine in JSP 1.1, WebLogic 6.1; I'm
going to cross-check tonight with JSP 2.0/Servlet 2.4/Tomcat 5.5 at home
tonight).
As soon as I switched over to using uid="lead", though, my ELs started
evaluating properly. So this sort of notation works:
<display:table name="list" uid="item">
<display:column title="ID">
${item.id}
</display:column>
</display:table>
As another note on this, the way I ended up debugging the issue may be
helpful to some folks. I created a dummy list with some objects in it and
displayed them. In one of the columns, I added some code to display
request attributes, page context attributes, etc. So it looked something
like this:
<display:table name="users" uid="user">
<display:column title="Attributes">
<%
Enumeration names =
pageContext.getAttributeNamesInScope(PageContext.PAGE_SCOPE);
out.write("PAGE_SCOPE<br/>\n");
while (names.hasMoreElements())
{
out.write(names.nextElement() + "<br/>\n");
}
%>
</display:column>
</display:table>
Rick Herrick said:
> I'm using JSP 2.0 with the built-in EL eval. So I've got
> displaytag-12.tld set up and everything works fine, except that I can't
> address the implicit row object through EL. EL is definitely functioning
> in this environment, so it's not a bigger issue. It's specifically
> related to accessing the implicit row object in display tables.
>
> So I have something like this:
>
> <display:table name="model.leads" id="lead">
> <display:column>
> ${lead_rowNum}:
> <c:choose>
> <c:when test="${lead == null}">
> LEAD IS NULL
> </c:when>
> <c:otherwise>
> LEAD IS NOT NULL
> </c:otherwise>
> </c:choose>
> ${lead.leadNumber}
> </display:column>
> <display:column property="leadName"/>
> </display:table>
>
> I know that this is finding my list of items because I get a display for
> the leadName column. But for the lead_rowNum and any properties on the
> lead object, I get null. So the resulting table looks like this:
>
> : LEAD IS NULL Customer, Name
>
> I also know that EL is working in my pages, since I have a number of other
> bits of data displayed throughout the page using EL on maps and various
> beans. Why can I not address the implicit objects directly through EL?
>
> Any help would be greatly appreciated!
>
>
> --
> Rick Herrick
> [EMAIL PROTECTED]
>
> I haven't got time for inner peace.
>
> "No reasonable definition of reality could be expected to permit
> this."--Albert Einstein, Boris Podolsky and Nathan Rosen in 1935
>
>
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--
Rick Herrick
[EMAIL PROTECTED]
I haven't got time for inner peace.
"No reasonable definition of reality could be expected to permit
this."--Albert Einstein, Boris Podolsky and Nathan Rosen in 1935
-------------------------------------------------------
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