Multibox Problem

["Prior, Simon" <Si...@ds-s.com>]

> Hi,
> 
> I am trying to use the Multibox tag to generate a number of checkboxes on
> a page.  This I have done successfully and the generated HTML appears to
> be correct.  My problem occurs after selecting a checkbox and then
> submitting the form.  
> 
> From the documentation I have read, I would expect my FormBean String[]
> property to be populated only with the Value attribute of the selected
> checkboxes.  Instead, I am finding my array contains a number of elements
> equal to the number of checkboxes generated on my page with the value set
> to true or false depending on whether the checkbox had been selected.
> 
> From my JSP:
> 
>             <logic:iterate id="workGroup" name="AddProfilesForm"
> property="workGroupsList" type="com.serco.tih.common.shared.WorkGroupVO">
>             <TR>
>                 <TD>
>                     <html:multibox name="AddProfilesForm"
> property="selectedWorkGroups">
>                         <bean:write name="workGroup"
> property="workGroupId"/>
>                     </html:multibox>
>                 </TD>
>                 <TD class="standard"><IMG
> src="/SercoTIH/images/clearpixel.gif" alt="" width="1" height="1"
> border="0">
>                     <bean:write name="workGroup"
> property="workGroupName"/>
>                 </TD>
>             </TR>
>             </logic:iterate>
> 
> Which generates the following HTML:
> 
>             <TR>
>                 <TD>
>                     <input type="checkbox" name="selectedWorkGroups"
> value="1">
>                 </TD>
>                 <TD class="standard"><IMG
> src="/SercoTIH/images/clearpixel.gif" alt="" width="1" height="1"
> border="0">
>                     Work Group 1
>                 </TD>
>             </TR>
>             
>             <TR>
>                 <TD>
>                     <input type="checkbox" name="selectedWorkGroups"
> value="2">
>                 </TD>
>                 <TD class="standard"><IMG
> src="/SercoTIH/images/clearpixel.gif" alt="" width="1" height="1"
> border="0">
>                     Work Group 2
>                 </TD>
>             </TR>
> 
> From my FormBean:
> 
>     private List workGroupsList;
>     private String[] selectedWorkGroups;
> 
>     /**
>      * @return the array of selected work groups
>      */
>     public String[] getSelectedWorkGroups()
>     {
>         return selectedWorkGroups;
>     }
> 
>     /**
>      * Sets the array of selected work groups
>      * @param selectedWorkGroups
>      */
>     public void setSelectedWorkGroups( String[] selectedWorkGroups )
>     {
>         this.selectedWorkGroups = selectedWorkGroups;
>     }
> 
>     /**
>      * @return the list of all existing work groups
>      */
>     public List getWorkGroupsList()
>     {
>         return workGroupsList;
>     }
> 
>     /**
>      * Sets the list of all existing work groups
>      * @param workGroupsList
>      */
>     public void setWorkGroupsList( List workGroupsList )
>     {
>         this.workGroupsList = workGroupsList;
>     }
> 
> As I explained above, if I selected just the first checkbox, I had
> expected selectedWorkGroups to containing one String with the value of
> "1".  However, iterating over selectedWorkGroups I find it contains two
> elements, the first being true and the second false.  Similarly, if I only
> select the second checkbox, rather than finding selectedWorkGroups
> contains just "2", it has false and true.
> 
> In addition, if I manipulate the selectedWorkGroups String array in my
> Action class such that I add the element "1", my JSP will pick this up and
> check the relevant checkbox.  It seems that the JSP can "read" from the
> String array correctly, but not "write". 
> 
> I am using Struts 1.0.2.
> 
> Any suggestions / ideas - I could do without spending another day on this!
> 
> Thanks,
> 
Simon.



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