Thanks for the help, using a bean to concat the name works well.
----- Original Message -----
From: "Dick Zetterberg" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: December 10, 2003 6:21 PM
Subject: Re: [OS-webwork] Can I concatenate text in the name attribute?
> ----- Original Message -----
> From: "Eric Mckenna" <[EMAIL PROTECTED]>
> To: <[EMAIL PROTECTED]>
> Sent: Tuesday, December 09, 2003 9:53 PM
> Subject: [OS-webwork] Can I concatenate text in the name attribute?
>
>
> > I have a form that creates some child objects, so the form has repeated
> form
> > values. I'm trying to add some other text (a prefix) in the name tag to
> > distinguish each child's values from one another, hence the status tag
and
> > prefix.
> > Here's basically what im trying to achieve,
> > <input type="text" name="child1[0].someName" value="123" />
> > <input type="text" name="child1[1].someName" value="456" />
> > <input type="text" name="child1[2].someName" value="789" />
> > ...
> > <input type="text" name="child2[0].someName" value="012" />
> > <input type="text" name="child2[1].someName" value="123" />
> > <input type="text" name="child2[2].someName" value="234" />
> > ...
> >
> > I started with using the status tag on iterator:
> > <ww:iterator value="someList" status="'status'">
> > <ww:textfield="'LabelName'" name="[EMAIL PROTECTED]"
> > value="someValue/>
> > </ww:iterator>
> >
> > <ww:iterator value="someList" status="'status'">
> > <ww:textfield="'LabelName'" name="[EMAIL PROTECTED]"
> > value="someValue/>
> > </ww:iterator>
> >
> > I've tried several different methods to get the name to resolve
correctly.
> > i.e.
> > name="'prefix['@status'].someName'"
> > name="'[EMAIL PROTECTED]'"
> > name="'[EMAIL PROTECTED]'"
> > name="prefix[{'@status'}].someName"
> > but nothing seems to work.
> >
> > Am I missing something? Does an expression only get resolved in value
> > attributes?
> >
>
> The short answer to the subject "Can I concatenate text...." is no, you
> can't concatenate with the expression language.
>
> The textfield tag tries to resolve the name tag. So it tries to look it up
> on the value stack. So for example you wrote: "[EMAIL PROTECTED]"
> That means that the value stack is trying to find a method called
> "[EMAIL PROTECTED]()" which it of course does not find.
> If you are unsure of if you're expression is resolved the way you want
you
> can try it with the property tag to verify that the output is correct.
>
> So to accomplish what you are trying to do you can skip the textfield tag
> and do as Cuong Tran suggested.
> Another possible solution is to have a set of concat methods in a utility
> action/bean. Then you could change the call to:
> name="@concatBean/concat('prefix1[', @status, '].someName')"
>
> This would call a concat method in the concatBean with 3 parameters that
> should be concatenated and returned.
>
> I am planning to add concatenation support for WW1.4.1. Then you would be
> able to write:
> name="'prefix1[' + @status + '].someName'" which is what you want I
> believe.
>
> Cheers,
>
> Dick Zetterberg
> [EMAIL PROTECTED]
>
>
>
>
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