disabled value getting null in bean for p:selectOneMenu

Question

I want to disabled department field based on employeeno.But,I want department value in bean.When,I using disabled value getting null in bean but without using disabled no problem...

<h:outputText value="Employee No"/>
  <p:selectOneMenu value="#{salarypromotionBean.salarypromotiondto.employeeNo}" id="emp" style="width:163px;">
  <f:selectItem itemLabel="select" itemValue="0" />
  <f:selectItems value="#{salarypromotionBean.empid}"/>
  <p:ajax event="change" listener="#{salarypromotionBean.currentSalaryAmount}" update="salaryIncrement,empN,empDoj,basic,da,empNewDesig,commonSalaryIncrement"/>
  </p:selectOneMenu>

 <h:outputText value="Department" />
    <p:selectOneMenu value="#{salarypromotionBean.salarypromotiondto.department}" id="empDept"  disabled="#{salarypromotionBean.designationDiaspleValue}" 
     style="width:163px;">
   <f:selectItems value="#{salarypromotionBean.deptname}" />
   </p:selectOneMenu>

Answer 1

You can do this.

 <p:selectOneMenu value="#{salarypromotionBean.salarypromotiondto.department}" id="empDept" rendered="#{!salarypromotionBean.designationDiaspleValue}" style="width:163px;"> <f:selectItems value="#{salarypromotionBean.deptname}" /> </p:selectOneMenu> <p:inputText value="#{salarypromotionBean.salarypromotiondto.department}" readonly="true" rendered="#{salarypromotionBean.designationDiaspleValue}"/>