Primefaces p:tabView: Value of selectOneMenu lost - jsf

Question

I have a problem when I use a p:tabView with dynamic="true", and there is a h:selectOneMenu on one tab, and on the other is a commandLink which is ajax="false". After clicking to the commandLink twice the value of the selectOneMenu is lost.
This problem does not occur when the tabView is dynamic="false".
The value of the h:inputText is not lost, but I see the following warning in the logfile:
org.apache.myfaces.shared.renderkit.html.HtmlRendererUtils decodeUIInput WARNING: There should always be a submitted value for an input if it is rendered, its form issubmitted, and it was not originally rendered disabled or read-only. You cannot submit a form after disabling an input element via javascript. Consider setting read-only to true instead or resetting the disabled value back to false prior to form submission. Component : {Component-Path : [Class: javax.faces.component.UIViewRoot,ViewId: /form/regional/region.xhtml][Class: javax.faces.component.html.HtmlBody,Id: j_id_5][Class: javax.faces.component.html.HtmlForm,Id: TestForm][Class: org.primefaces.component.tabview.TabView,Id: tabviewTest][Class: org.primefaces.component.tabview.Tab,Id: j_id_8][Class: javax.faces.component.html.HtmlInputText,Id: j_id_f]}
Here is the form:
<p:tabView dynamic="true" cache="true" id="tabviewTest">
<p:tab title="Tab 1">
<h:selectOneMenu value="#{Region.dropDownValue}" id="dropDown">
<f:selectItem itemLabel="" itemValue=""/>
<f:selectItem itemLabel="1" itemValue="1"/>
<f:selectItem itemLabel="2" itemValue="2"/>
<f:selectItem itemLabel="3" itemValue="3"/>
<f:selectItem itemLabel="4" itemValue="4"/>
</h:selectOneMenu>
<h:inputText value="#{Region.inputValue}" />
</p:tab>
<p:tab title="Tab 2">
<p:commandLink ajax="false"
id="link"
value="Test"
actionListener="#{Region.someActionMethod}" />
</p:tab>
</p:tabView>
And here the Bean:
public class Region {
private Integer dropDownValue = 3;
private String inputValue = "Test";
public void someActionMethod(ActionEvent ev) {
System.out.println("someActionMethod called");
}
public Integer getDropDownValue() {
return dropDownValue;
}
public void setDropDownValue(Integer dropDownValue) {
this.dropDownValue = dropDownValue;
}
public String getInputValue() {
return inputValue;
}
public void setInputValue(String inputValue) {
this.inputValue = inputValue;
}
}
My Environment: Primefaces 5.0/5.1.RC1, Myfaces 2.1/2.2, Tomact 7
Any ideas what could be wrong?

Answer 1

What scope does your ManagedBean have?
When you use a RequestScope you are not able to submit your selectOneMenu with an UICommand component like p:commandLink when you set the ajax attribute to false. The changes are lost in this case.
Here are two possibilities to fix your problem:
Attempt 1: Set your Bean ViewScoped:
In most cases this will work. If you must use special annotations to annotate your beans (like Apache DeltaSpike #ViewAccessScoped for example), try to separate your bean into View and Controller beans, annotating the View with just simple #ViewScope and keeping all the values in it.
Attempt 2: Remove ajax="false" from p:commandLink:
This will work if your use-case allows it. For example, downloading a file with PrimeFaces will require explicit declaration that the ajax is not to be used, so this solution will not be applicable.

Answer 2

add ajax listener
<h:selectOneMenu value="#{Region.dropDownValue}" id="dropDown">
<f:selectItem itemLabel="" itemValue=""/>
<f:selectItem itemLabel="1" itemValue="1"/>
<f:selectItem itemLabel="2" itemValue="2"/>
<f:selectItem itemLabel="3" itemValue="3"/>
<f:selectItem itemLabel="4" itemValue="4"/>
<p:ajax event="change" update="#this"/>
</h:selectOneMenu>