Submitting Struts2 iterator index as a map key not working

Question

I am running into an interesting problem and I can't really figure out what it is.

I have a a struts iterator that display a textfield. Defined like so:

    <s:form action="AddSubmit" method="post" theme="simple">
        <s:iterator status="rowStatus" value="otherList">
                <div>
                   <span>Input Value:</span>
                   <s:textfield theme="simple" 
                        name="valueMap[%{#rowStatus.index} + '-custom'].inputValue"/>
                                    </div>
        </s:iterator>
        <s:submit value="Save" theme="simple" />
   </s:form>

When I submit, the iterator value %{#rowStatus.index} does not evaluate to anything and the value is never set, but when I hardcode a key like 0, it works. Any idea on what is going on?

Anything else is not evaluated. – Roman C Jan 25 '17 at 22:19 — Roman C, Jan 25 '17 at 22:19

Yasser Zamani · Accepted Answer · 2017-01-25T22:07:20.377

1

This should work:

name="%{'valueMap[\\'' + #rowStatus.index + '-custom\\'].inputValue'}"

%{ OGNL expression } is used to force OGNL evaluation of an attribute that would normally be interpreted as a String literal.

edited Jan 25 '17 at 22:07

answered Jan 25 '17 at 21:12

Yasser Zamani

2,380
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18

This did not work for me – Seephor Jan 25 '17 at 21:17
@Seephor, what about `name="%{'valueMap[\\'' + #rowStatus.index + '-custom\\'].inputValue'}"` – Yasser Zamani Jan 25 '17 at 22:06
hey that worked! ok... so why does it need to be wrapped like that? – Seephor Jan 25 '17 at 23:13
surprisingly it doesn't work if I have the '-' before custom, but it does without. Does it need to be escaped or something? I tried '\\-custom\\' but no luck. – Seephor Jan 26 '17 at 01:09
@Seephor, It's surprising, could you please try `_` (underline) instead. – Yasser Zamani Jan 26 '17 at 08:13

Submitting Struts2 iterator index as a map key not working

1 Answers1