Binding af:selectOneChoice to value in managed bean

Question

Hi all,
I am trying to create a simple screen that has a selectOneChoice that allows the user to change the value of a property in a session-scoped managed bean. I've got a View Object that will display the values for the user to select. I can easilly set the value on my managed bean in an actionlistener when the user clicks "OK"
However, I have these problems:
1). I can't find any way to put an af:selectOneChoice on the screen without binding it to something. I want to bind it to a value in a managed bean - how to do this?
2). I tried creating a "dummy" view object (select :bindVariable from dual) and then put an executeWithParams in the executable of my page to set the bind variable to the backing bean value. I then bound the selectOneChoice to that field from the VO. This worked fine the first time, but the second time I tried to call it in the same session, it bombed with JBO errors. This also seems like a very inefficient and round-about way to accomplish this task.
Can anyone provide any pointers as to how I might accomplish this? If it would help, my use case is this: a user is logged on with "super-user" athority and can review information from any of the field offices. The field office ID that the user is currently looking at is stored in the session-scoped bean. I need a way for the user to change what field office they are reviewing.
Thanks and regards,
John

Answer 1

Wow - this is harder than I thought....
I have got something working in a rudimentary fashion, although I'm not completely satisfied yet. What I did was to create my own List binding in the page definiton that looks like this:
<list ListOperMode="1" IterBinding="LKUP_OfficeViewIterator" id="OfficeId">
      <AttrNames>
        <Item Value="OfficeName"/>
        <Item Value="OfficeId"/>
      </AttrNames>
    </list>
</list>I then dropped a selectOneChoice from the component pallette (not the data control pallette) on to my page. The f:SelectItems component inside the af:SelectOneChoice, I bound the value property to "#{bindings.OfficeId.items}" I could not find any documentation on this, but it seems to work. The only issue is that my list shows both the office name and the id (I'd like to show the name and hide the id).
Then, in my backing bean action listener bound to the OK button, I do:
    JUCtrlListBinding o = (JUCtrlListBinding) JSFUtils.resolveExpression("#{bindings.HotelId}");
    // list is bound to my af:SelectOneChoice
    Row r = (Row) o.getValueList()[((Integer)list.getValue()).intValue()];
    Integer officeID = (Integer) r.getAttribute(0);
    String officelName = (String) r.getAttribute(1);
   // getUserInfo gets my session-scoped bean
    super.getUserInfo().setOfficeInformation(officeID, officeName);
     AdfFacesContext.getCurrentInstance().returnFromDialog("ChangeOffice:OK", null);My 2 problems with this approach:
1). How do I get the list to just show the office name (but still make the ID available)?
2). No matter what I put for the value of the af:SelectOneChoice, I can't seem to make it have the current value from userInfo.getOfficeID selected in the list. Even when I hard-code a number in the list, nothing is selected. When I bind the value to an EL property referring to userInfo.officeID, the selectOneChoice doesn't even render!
Regards,
John