3 Replies Latest reply on Aug 18, 2011 2:03 PM by kisito

    Problem with h:selectOneMenu and rendered attribute

    knuffi
    knuffi Feb 15, 2009 5:18 AM

      Hello,


      I'm stuck with a problem regarding Hibernate persistance and facelets. In my view I want to display a selectOneMenu depending on the request param sent, therefore I have used the rendered attribute. But through this rendered attribute, it seems, that properties on the BackBean are not properly set, thus resulting in a not-null property results to null for ... in the persist action.


      View:


      <!DOCTYPE composition PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
    xmlns:s="http://jboss.com/products/seam/taglib"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:rich="http://richfaces.org/rich"
    template="layout/template.xhtml">

<ui:define name="body">

    <h:form id="person_facultyForm">

        <rich:panel>
            <f:facet name="header">employment</f:facet>

            <s:decorate id="PersonField" template="layout/edit.xhtml">
               <ui:define name="label">Person</ui:define>
               <h:selectOneMenu rendered="#{not empty personHome.person_id}"
 value="#{person_facultyHome.instance.person}" required="true">
                       <f:selectItem itemValue="#{personHome.instance}" itemLabel="#{personHome.instance.name}, #{personHome.instance.firstname}"/>
                  </h:selectOneMenu>
                       
             </s:decorate>
.
.
.
<div class="actionButtons">
            <h:commandButton id="save"
                          value="Save"
                         action="#{person_facultyHome.persist}"
                       rendered="#{!person_facultyHome.managed}"/>
            <s:button propagation="end"
                               id="cancel"
                            value="Done"
                             view="/employment.xhtml">
            </s:button>
        </div>
    </h:form>
...


      person_facultyHome.instance.person results to null(but still rendered correctly) in persist action, if rendered attribute is used. If this rendered attribute is not used everything is fine.


      personHome:


      @Name("personHome")
public class PersonHome extends EntityHome<Person>
{
    @RequestParameter
    Integer person_id;
    
    @Override
    public Object getId()
    {
        if (person_id == null)
        {
            return super.getId();
        }
        else
        {
            return person_id;
        }
    }
     
    @Override @Begin(join=true)
    public void create() {
        super.create();
    }
     
     public Integer getPerson_id() {
          return person_id;
     }

     public void setPerson_id(Integer person_id) {
          this.person_id = person_id;
     }

}



      person_facultyHome


      
@Name("person_einrichtungHome")
public class Person_EinrichtungHome extends EntityHome<Person_Einrichtung>
{
    @RequestParameter Integer pe_id;

    @Override
    public Object getId()
    {
        if (pe_id == null)
        {
            return super.getId();
        }
        else
        {
            return pe_id;
        }
    }

    @Override @Begin(join=true)
    public void create() {
        super.create();
    }

     public Integer getPe_id() {
          return pe_id;
     }

     public void setPe_id(Integer pe_id) {
          this.pe_id = pe_id;
     }

}



      I really do not understand why it's behaving like that, and especially not Seam and JSF lifecycles. I am still very new to Seam and JSF. Help very appreciated. I'm very frustrated :). Thank you in advance.