Action empties the selectonemenu - jsf

Question

I have a simple form, with some input and a selectonemenu:
<h:panelGroup id="Client">
<h:form id="formClient">
<p:panelGrid columns="3" layout="grid"
columnClasses="labelWidth, ui-grid-col-3">
<p:outputLabel value="CIN:" for="txtCin" />
<h:panelGrid columns="2">
<p:inputText value="#{clientBean.client.identifiant}" id="txtCin"></p:inputText>
<p:commandButton value="Search" process="#parent"
styleClass="orangeButton" update="formClient"
style="margin-top: -10px;" action="#{clientBean.rechercher()}"></p:commandButton>
</h:panelGrid>
<p:message for="txtCin" />
<p:outputLabel value="Nom:" for="txtNom" />
<p:inputText id="txtNom" styleClass="form-control"
value="#{clientBean.client.nomClient}" required="true"
requiredMessage="Le nom est obligatoire" />
<p:message for="txtNom" />
<p:outputLabel value="Type de voie:" for="txtVoie" />
<p:selectOneMenu styleClass="form-control"
value="#{clientBean.client.typeVoie}" id="txtVoie">
<f:selectItem itemLabel="Selectionnez voie..." itemValue="" />
<f:selectItems value="#{clientBean.typeVoies}" var="typeVoie" itemLabel="#{typeVoie.libelle}" itemValue="#{typeVoie}" />
</p:selectOneMenu>
<p:message for="txtVoie" />
<p:outputPanel></p:outputPanel>
<p:outputPanel>
<p:commandButton value="Annuler" update="formClient"
styleClass="redButton" process="#this"
actionListener="#{clientBean.cancel()}" />
<p:commandButton ajax="false" value="Suivant"
styleClass="greenButton" action="Devis?faces-redirect=true"></p:commandButton>
</p:outputPanel>
</p:panelGrid>
</h:form>
</h:panelGroup>
As you see here i have some fields that are a required, and a button to cancel (empties) the form:
#ManagedBean(name = "clientBean")
#SessionScoped
public class ClientBean implements Serializable {
#EJB
private IClientDAO clientDAO;
#EJB
private ITypeVoieDAO typeVoieDAO;
private List<TypeVoie> typeVoies;
private static final long serialVersionUID = -3324864097586374969L;
private Client client = new Client();
#PostConstruct
public void init(){
typeVoies = typeVoieDAO.findAll();
}
public Client getClient() {
return client;
}
public void setClient(Client client) {
this.client = client;
}
public void rechercher(){
if(client != null && client.getIdentifiant() != null){
System.out.println(client.getIdentifiant());
client = clientDAO.findByIdentifiant(client.getIdentifiant());
if(client == null){
cancel();
}
}
}
public void cancel(){
client = new Client();
System.out.println(typeVoies);
}
public String navigateToClientPage(){
rechercher();
return "client?faces-redirect=true";
}
public List<TypeVoie> getTypeVoies() {
return typeVoies;
}
public void setTypeVoies(List<TypeVoie> typeVoies) {
this.typeVoies = typeVoies;
}
}
At the page loads, the selectonemenu loads perfectly, but when i click cancel, the selectonemenu gets emptied, even when i "search" for a client, and updates the form, all the other fields are filled properly, but the selectonemenu gets completely empty.
Using JSF 2.1 and primefaces 6.0
UPDATE:
Added a converter, but nothing change ...

Answer 1

Make sure you dont empty typeVoies list at some point on your backingbean. And if you can share your full java class, you might get more accurate help.