couldn't get value back from <s:iterator> after submitting the <s:form>

[will zhang]

Dear all, I'm using struts 2.0.11

I want to display the iterated object called "Segment" and user can change the fields of it and submit so that the list will be updated.

code in action:

	private List<Segment> segmentList = new ArrayList<Segment>();
	
	public List<Segment> getSegmentList()
	{
		return segmentList;
	}

	public void setSegmentList(List<Segment> segmentList)
	{
		this.segmentList = segmentList;
	}    

jsp code:

<s:form action="segment_udpateSegmentList" method="post" enctype="multipart/form-data" validate="false" theme="simple">		
	<table>
 		<s:iterator value="segmentList" id="segment" status="stat">
 		<tr class="color">
 			<td><s:property value="#segment.id" /></td>
 			<td>			    <s:datetimepicker 	name="#segment.startDate"    					    								  								
     								displayFormat="MM/dd/yyyy"			 
     								required="true" />
     		        </td>
 			<td><s:textfield 	name="#segment.comment"		size="10"/></td>
 			<td><a       rel="nofollow"><img  border="0"></a></td>					
 		</tr>
 		</s:iterator>
 		<tr>
 		<s:submit 	action="segment_udpateSegmentList" align="left"	value="Update" theme="ajax" targets="segment_edit_message" />
 		</tr>
 	</table>
</s:form>
    

There's no problem in display, however, when the user click "Update" button, it returns an empty arrayList segmentList ([]) to the action.

I tried different method such as

 <s:textfield 	name="comment"		size="10"/>   

Display is ok, still no value back.

Any solution for this problem? Thanks!

[David Newton]

Try using array notation (index inside square brackets, like [n]) if order is important. At some point that may have stopped being a requirement--I noticed that it wasn't strictly necessary, but I don't know if it was always like that, or if it was a change.

[will zhang]

David Newton wrote:Try using array notation (index inside square brackets, like [n]) if order is important. At some point that may have stopped being a requirement--I noticed that it wasn't strictly necessary, but I don't know if it was always like that, or if it was a change.

Thanks, Dave, I used

<s:textfield   name="segmentList[%{#stat.index}].comment"     size="10"/>    

and it works for form tags, such as textfield, hidden.

However, it doesn't work for data tags(such as<s:property> tag) and ajax tags(such as <s:datetimepicker> tag).

[David Newton]

It works for <s:property> tags if there's a backing collection; not sure what you mean: property tags aren't form tags.

[will zhang]

David Newton wrote:It works for <s:property> tags if there's a backing collection; not sure what you mean: property tags aren't form tags.

I tried

  <s:property   value="segmentList[%{#stat.index}].comment"  

but it didn't work, I get nothing even in the display.

When I said property tags aren't form tags, I mean user doesn't change value for ><s:property>, also from this catagory: http://struts.apache.org/2.0.14/docs/tag-reference.html

[David Newton]

You're improperly embedding OGNL escapes; you'd want %{segmentList[#stat.index]} or something like that (if you even need the #; depends on which S2 version you're using).

[will zhang]

David Newton wrote:You're improperly embedding OGNL escapes; you'd want %{segmentList[#stat.index]} or something like that (if you even need the #; depends on which S2 version you're using).

Thanks, Dave, I tried <s:property value="%{segmentList[#stat.index].comment}" /> and found it displays value well but couldn't pass value back to the segmentList.

I also tried <s:property value="segmentList[#stat.index].comment" />, it's the same with above.

segmentList[stat.index] doesn't work for me, even for the display.

[jainitya jaiyswal]

Hi
I am also getting the same problem as
couldn't get value back from <s:iterator> after submitting the <s:form>
I have tried the code below
<s:iterator value="shopLog.selllogs" status="SellLogs">
<tr align="left" valign="top">


<td><s:textarea name="%{'shopLog.selllogs['+#SellLogs.index+'].receive'}" id="receive" value="%{receive}" onchange="Total_Day_Stock();" /></td>


</tr>
</s:iterator>
it work fine for display but returning null values in action ,
Please suggest if I am missing something here.