Right, you will never use <display:table name="userList"> without ${}...
the "name" attribute expects a reference to a list object: in the "old style" this was
done using a custom sintax, in the EL version this is done using the standard
expression language. It works in the same way all the other jstl tags work.
If you need your list to be choosen dinamically you can set a different variable
before the display:table tag.
Sorry Tim, but I still don't think that using el to generate an expression which is
then re-evaluated using a different sintax can be a good design...
fabrizio
________________________________
From: [EMAIL PROTECTED] on behalf of Tim McCune
Sent: Thu 11/03/2004 16.36
To: [EMAIL PROTECTED]
Subject: RE: [displaytag-devel] EL Tag and getting lists in the "name"attribute
Fabrizio, that seems wrong. With that implementation, when would you
ever use the "name" attribute without ${}? A proper implementation
should look like either:
<display:table name="userList">
or
<display:table name="${listName}">
The second case uses double indirection, so it would only be used in a
situation where you have several different lists in the page context
that you can choose from, keyed by names, and the name of the list you
choose needs to be dynamic. Granted, this is a very odd-sounding use
case, but it could happen. The reason that EL tags seem weird in this
case is because the value of the "name" attribute should be a variable
reference. EL tags make much more sense in attributes that are
constants, e.g.
<display:table name="userList" cellspacing="${cellspacing}">
On Thu, 2004-03-11 at 10:19, Fabrizio Giustina wrote:
> yes, this is absolutely intentional, see my first mail on the thread:
> http://sourceforge.net/mailarchive/message.php?msg_id=7406316
>
> fabrizio
>
> ________________________________
>
> From: [EMAIL PROTECTED] on behalf of Matt Raible
> Sent: Thu 11/03/2004 16.04
> To: [EMAIL PROTECTED]
> Subject: [displaytag-devel] EL Tag and getting lists in the "name" attribute
>
>
>
> One thing I noticed with the nightly build. Before I was using the
> following with the EL tag and it worked:
>
> <display:table name="userList" cellspacing="0" cellpadding="0"
>
> Now I have to use:
>
> <display:table name="${userList}" cellspacing="0" cellpadding="0"
>
> I just want to make sure this is intentional. I'll update my code to
> reflect this (as it makes sense). I guess my main question is - will
> this change or is this behavior from here on out. Will the name in the
> EL tag always require ${}? If I try to use name="userList", I get:
>
> Exception: [.LookupUtil] Error looking up property "username" in object
> type "java.lang.String"
> Cause: Unknown property 'username'
>
> Thanks,
>
> Matt
>
>
>
>
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