JSF 2.0 - Ajax and Rendered Components

Question

I'm experiencing some problems when using the "rendered" attribute with ajax behavior. I'll paste the code so I think it will be a lot more clear:

<h:selectOneMenu value="#{registrarVentaController.esCobroChequeString}">
  <f:selectItem itemLabel="Efectivo" itemValue="false"/>
  <f:selectItem itemLabel="Cheque" itemValue="true"/>
  <f:ajax  execute="@this" render="@form"/>
</h:selectOneMenu>

<h:panelGroup id="panelMonto">
    <span>Monto:</span>
    <h:inputText value="#{registrarVentaController.monto}" rendered="#{registrarVentaController.banCobroCheque}"/>
    <h:inputText value="#{registrarVentaController.monto}" rendered="#{not registrarVentaController.banCobroCheque}"/>    
</h:panelGroup>

My "#{registrarVentaController}" is just a View Scoped JSF Managed Bean with appropiate setters/getters.

This way it works, I mean, when user selects option " Efectivo ", panelGroup " panelMonto " will get updated and we'll see the first inputText, and conversely when user selects option " Cheque " user will see the second inputText.

For this approach I used " f:ajax " component where I updated the whole @form to get this behavior work and I just want to update panelGroup " panelMonto " (using render="panelMonto" It doesn't work at all (I even try with full scope resolution :formName:panelMonto with no result).

I just want to have rendered work with ajax="idComponent" or similar behavior to show certain parts according what user have selected.

Best Regards!

Note (One solution)

I managed to get a solution (taking as an input JSF rendered is not working and a bit of myself). I've just moved to a new form the part that I'm interested in filtering according what user selected. This way I still use @form ajax's render and it will just render this new form (not the whole form as I was using!) Neverthless I'm still wondering if there is a solution to not used @form and just the component/s ID.

Answer 1

what if you check with

render=":panelMonto"

not

render=":formName:panelMonto"

still not working?

this should work only with

render="panelMonto" //because is in the same form

Can you add more code? Also can you check with your browser (in chrome: right click, inspect element, network) to see if there is any activity?? perhaps is rendering the same thing because of you...