p:selectOneMenu not keeping value after form validation - validation

Question

I want to keep selected values after form validation. My code is here:
<h:form id="advanceSearchForm">
<p:dataGrid value="#{advancedSearchBean.selectedCriteriasList}" id="advancedSearchGrid" var="criteria" rowIndexVar="rowIndex"
columns="2" layout="grid" paginator="false" >
<h:panelGrid columns="1" id="criteriaPanel">
<p:panel id="criteria">
<div>
<!-- select criteria -->
<p:selectOneMenu value="#{criteria}" label="#{criteria.name}"
valueChangeListener="#{advancedSearchBean.addNewCriteria}"
converter="#{advancedSearchBean.criteriaConverter}">
<f:selectItems value="#{advancedSearchBean.criterias}"
var="crt"
itemLabel="#{crt.name}"
itemValue="#{crt}"
itemDisabled="#{advancedSearchBean.disableItem(crt.id)}" />
<f:ajax execute="#this"/>
</p:selectOneMenu>
<!-- launch date -->
<p:outputPanel rendered="#{criteria.id != null and (criteria.id == BusinessConstants.ADVANCED_SEARCH_FILTER_LAUNCH_DATE_ID)}">
<p:outputPanel>
<h:outputText value="From" styleClass="passportLabel" />
<p:inputMask required="true" id="launchStartDate" value="#{advancedSearchBean.launchStartDate}" mask="99/9999">
<f:convertDateTime pattern="MM/yyyy" timeZone="#{sessionScope.identity.timezone}" />
<p:ajax event="change" listener="#{advancedSearchBean.changeLaunchStartDate()}" />
</p:inputMask>
</p:outputPanel>
<p:outputPanel>
<h:outputText value="To" styleClass="passportLabel" />
<p:inputMask required="true" id="launchEndDate" value="#{advancedSearchBean.launchEndDate}" mask="99/9999">
<f:convertDateTime pattern="MM/yyyy" timeZone="#{sessionScope.identity.timezone}" />
<p:ajax event="change" listener="#{advancedSearchBean.changeLaunchEndDate()}" />
</p:inputMask>
</p:outputPanel>
</p:outputPanel>
</div>
</p:panel>
</h:panelGrid>
</p:dataGrid>
<!-- run search button -->
<div>
<p:commandButton id="runAdvancedSearch" value="Run search" action="#{advancedSearchBean.doAdvancedSearch}"
update="advanceSearchForm:advancedSearchGrid"/>
</div>
</h:form>
When i'm typing a wrong date and click on the Search button, i'm getting my validation error message, and i'm also losing the selected value in the selectOneMenu.
The strange thing is that if redirect to another page and after that i'm coming back, it works... My bean is:
#ManagedBean(name = "advancedSearchBean")
#ViewScoped
public class AdvancedSearchBean {
private Map<Long, String> criteriaMap;
private List<AutocompleteCriteria> criterias;
private List<AutocompleteCriteria> selectedCriteriasList;
#PostConstruct
public void init() {
criteriaMap = BusinessConstants.ADVANCED_SEARCH_CRITERIA.entrySet().stream().sorted(Entry.comparingByValue()).
collect(Collectors.toMap(Entry::getKey, Entry::getValue, (e1, e2) -> e1, LinkedHashMap::new));
criterias = new ArrayList<AutocompleteCriteria>();
for(Iterator<Map.Entry<Long, String>>it = criteriaMap.entrySet().iterator();it.hasNext();){
Map.Entry<Long, String> entry = it.next();
criterias.add(new AutocompleteCriteria(entry.getKey(), entry.getValue()));
}
criteriaConverter = new AutocompleteConverter(criterias);
selectedCriteriasList = new ArrayList<AutocompleteCriteria>();
selectedCriteriasList.add(new AutocompleteCriteria(BusinessConstants.ADVANCED_SEARCH_FILTER_NO_CRITERIA, criteriaMap.get(BusinessConstants.ADVANCED_SEARCH_FILTER_NO_CRITERIA)));
}

Answer 1

In your p:selectOneMenu You have value="#{criteria}" instead of value="#{advancedSearchBean.criteria}".