Struts2 Iterator OGNL index not working

Question

I have this iterator.

<s:iterator value = "myQuestions"  status="key">

<s:property value="%{#key.index}" />
<h1><s:property value = "myQuestions[%{#key.index}].question"/></h1>

</s:iterator>

When the iterator iterate on this

<s:property value="%{#key.index}" />

it displays the proper index. but when I add %{#key.index} in this

 <h1><s:property value = "myQuestions[%{#key.index}].question"/></h1>

it doesn't display the element who is at that certain indice.

so let's say the current index is at 0.

when I do this <s:property value = "myQuestions[%{#key.index}].question"/> it does not display anything. but when I hard code it.

<s:property value = "myQuestions[0].question"/> it displays the proper item. what am I missing?

Dave Newton · Accepted Answer · 2013-03-27T01:44:10.110

1

You're breaking the evaluation. It should be closer to:

%{myQuestions[#key.index].question}

It's quite redundant, though, since you're iterating, and each object in the collection will be pushed onto the stack, so all you need to refer to is question.

You can also use the var attribute if you need to name each object.

Consider checking out the iterator tag docs.

edited Mar 27 '13 at 01:44

answered Mar 27 '13 at 01:38

Dave Newton

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where exactly would I insert that? – user962206 Mar 27 '13 at 01:39
when I resubmit the form. will it repopulate the list? – user962206 Mar 27 '13 at 01:40
@user962206 ... In the only place you try to access a specific question? – Dave Newton Mar 27 '13 at 01:41
@user962206 What form?! You're displaying a value, that has nothing to do with forms. – Dave Newton Mar 27 '13 at 01:45
I'll just ask that in another question. putting it here is out of context. – user962206 Mar 27 '13 at 01:45
Its here. http://stackoverflow.com/questions/15650002/populate-user-defined-objects-from-a-list-from-the-jsp/15650245#15650245 – user962206 Mar 27 '13 at 01:46

Struts2 Iterator OGNL index not working

1 Answers1