PanelGrid和OutputLabel

Question

I got a problem with this code. I want to have a SelectOneMenu where I select a Customer (this one works fine for me). But after I selected an element, I should see the ID of this Customer in a OutputText. This does not work:

<h:form id="form">
  <h:panelGrid columns="2">
    <h:outputLabel for="customer" value="Customer: " />
    <h:selectOneMenu id="customerList"
    value="#{customerController.selected}" required="true">
      <f:selectItems value="#{customerController.items}"
      var="customer"
      itemLabel="#{customer.id} #{customer.firstname} #{customer.lastname} #{customer.email}"
      itemValue="customer" />
      <p:ajax update=":form:myId" />
    </h:selectOneMenu>
    <h:outputLabel value="Customer ID: " for="myId" />
    <h:outputText id="myId"
    value="#{customerController.selected.id}" />
  </h:panelGrid>
</h:form>

Any Ideas?

Answer 1

尝试使用：

<p:ajax update="myId" />