passing parameter on button click

[Rajeev Ravindran]

hi,

i want to pass parameter to the backing bean on button click. it works good on <h:command link, but when i tried passing <f:param / f:attribute inside <hx:commandExButton, its not getting value in backing bean. im using ibm-jsf.jar

my code :
<hx:commandExButton type="submit" value="Archive"
styleClass="commandExButton" id="buttonArchive"
action="#{pc_Home.doButtonArchiveAction}" >
<f:param value="hello" name="certID" />
</hx:commandExButton>


doButtonArchiveAction of backigbean is getting invoked but im not able to ge the certID using request.getParameter("certID"). it returns null.
Any ideas or suggestions are welcome.

Thanks,
Rajeev

[Richard Green]

hope this example helps...

i have a datatable that lists the authorities. Every authority row has an "Edit" button next to it. In my backing bean, I coded to logic to workout which authority row needs to be edited.

<h:dataTable id="authorities" value="#{user.authorities}" var="authorities" rowClasses="odd,even">
....
.....
<h:column>
     <h:commandButton action="#{authority.populateEdit}" value="Edit"/>
</h:column>
</h:dataTable>

and in my backing bean,

public String populateEdit ()
  {
    UIViewRoot root = getContext().getViewRoot();
    UIData table = (UIData)root.findComponent("viewUserForm")
        .findComponent("authorities");
    auth = (Auth)table.getRowData();   // this returns the selected row
    return "success";
  }