Struts2 nested iterators with listboxes

[Casey Cox]

I am stumped with this problem that I have. Any pointers to the solution or related documentation would be greatly appreciated.

My JSP has nested iterators, and the deepest one has a listbox, like so:

<s:iterator value="productBOs" status="productBOsStatus" >
<s:iterator value="attributesBOs" status="attributesBOsStatus" >
<tr align='left'>
<td><s  :p  roperty value="sk"/></td>
<td><s  :p  roperty value="attributeName" /></td>
<td><s:select name="productBOs[%{#productBOsStatus.index}].attributesBOs[%{#attributesBOsStatus.index}]"
theme="simple" headerKey="-1" headerValue="Select" list="attributeValues" /></td>
</tr>
</s:iterator>
</s:iterator>

The generated source code looks like this:

 
<td>20AAA93</td>
<td>CSTM</td>
<td><select name="productBOs[0].attributesBOs[0]" id="plk_productBOs_0__attributesBOs_0_">
    <option value="-1"
    >Select</option>
    <option value="WEATHER">WEATHER</option>   

And it seems to look alright to me. But submit causes a problem because it is not able to find a setter. I am not exactly sure where or how I would write this setter. I have a setter/getter for ProductBOs in the action class. The ProductBO class has a setter for the attributeBOs. What else do I need?

Thanks !

[ December 21, 2008: Message edited by: Casey Cox ]
[ December 21, 2008: Message edited by: Casey Cox ]

[Casey Cox]

Well, it seems like I had to declare my object as an Arraylist in the Action, like so:
ArrayList productBOs;
instead of
ProductBO[] productBOs;

So, now I am able to submit the jsp without running into an exception, but I don't get the values in my action.

I can see the setter being called, but the argument is always non null and empty!!

 
public void setProductBOs(ArrayList productBOs) {
  this.productBOs = productBOs;
}

This is how the jsp looks like:

 
<s:iterator value="productBOs" status="productBOsStatus">
<s:iterator value="attributesBOs" status="attributesBOsStatus">
<tr align='left'>
<td>
<s:property value="sk" />
</td>
<td>
<s:select name="productBOs[%{#productBOsStatus.index}].attributesBOs[%{#attributesBOsStatus.index}]" 
theme="simple" headerKey="-1" headerValue="Select" list="attributeValues" />
</td>
</tr>
</s:iterator>   

Help, anyone!
[ December 25, 2008: Message edited by: Casey Cox ]

[Casey Cox]

I think I found a way to get my stuff to work. I made my action implement ParameterAware and the jsp values are now available in the map. I am not sure if this is the correct way to do it, but it does seem to fulfil my needs, in a somewhat roundabout way.

I have been working on this for almost 2 days, and even though I have a possible solution in hand, I don't feel any relief, only a vague sense of anti-climax..

[Nitin Surana]

@Cox Help me dude....I got stuck with the same issue....please help....its urgent....
How did you used parameteraware interface...can you post the code please.

[Nitin Surana]

I Got the Solution:

This is how the JSP code will look like:

<s:form action="saveaction" >
<s:iterator value="lstBean" id="lstBean" status="outerStat">
<s:textfield value="%{name}" name="lstBean[%{#outerStat.index}].name"/>
<s:textfield value="%{amt}" name="lstBean[%{#outerStat.index}].amt"/>
<s:textfield value="%{id}" name="lstBean[%{#outerStat.index}].id"/>
<s:iterator value="%{lstString}" status="myStat">
<s:textfield name="lstBean[%{#outerStat.index}].lstString[%{#myStat.index}]"/>
</s:iterator>
</s:iterator>
<s:submit value="Click me to submit lstBean"/>
</s:form>


Following is the bean(XBean) whose List is used in the JSP:

public class XBean
{
private ArrayList<String> lstString=new ArrayList<String>();
private String name;
private Double amt;
private Integer id;
//Getters and setters of fields
}

Now you can simply have a field lstBean with setters in your submitting action (saveaction) and hey you are done.

[Nitin Surana]

This is how the JSP code will look like:

<s:form action="saveaction" >
            <s:iterator value="lstBean" id="lstBean" status="outerStat">
                <s:textfield value="%{name}" name="lstBean[%{#outerStat.index}].name"/>
                <s:textfield value="%{amt}" name="lstBean[%{#outerStat.index}].amt"/>
                <s:textfield value="%{id}" name="lstBean[%{#outerStat.index}].id"/>
                <s:iterator value="%{lstString}" status="myStat">
                    <s:textfield name="lstBean[%{#outerStat.index}].lstString[%{#myStat.index}]"/>
                </s:iterator>
            </s:iterator>
            <s:submit value="Click me to submit lstBean"/>
        </s:form>

Following is the bean(XBean) whose List is used in the JSP:

    public class XBean
    {    
    private ArrayList<String> lstString=new ArrayList<String>();
    private String name;
    private Double amt;
    private Integer id;
    //Getters and setters of fields
    }

Now you can simply have a field lstBean with setters in your submitting action (saveaction) and hey you are done.

[Vallaru smitha]

Hi Nitin,

i have followed your code but still i am not getting value, here is what i wrote

<s:iterator value="activityList" id="myact" status="activityStatus">

<s:iterator value="%{favorites}" status="myStat">
<s:checkbox name="myact[%{#activityStatus.index}].favorites[%{#myStat.index}].accFavorities"/>
</s:iterator>

But check box is not getting displayed.

Is there any other way it could be done. I am using one-to=many relationship between activity and favorites.

thanks