SelectOneMenu - Validation Error: Value is not valid

[Diego Gomes Araujo]

I'm having this problem!
I have two selectOneMenu
one with list of states
and other with a list of cities of selected state, this problem occurs this way.
I select the state then list the cities, but when submit my form, the bean that contains the id of my state and not load list of cities.
It's like the bean was created again!

the code below:

estadoBean

package br.com.compracoletiva.beans;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Service;
import org.springframework.web.context.WebApplicationContext;

import br.com.compracoletiva.dao.EstadoDao;
import br.com.compracoletiva.entity.Estado;
import br.com.compracoletiva.util.GenericBean;

@Service
@Scope(WebApplicationContext.SCOPE_REQUEST)
public class EstadoBean extends GenericBean {

	@Autowired
	private EstadoDao estadoDao;
	
	private List<Estado> estados;

	public List<Estado> getEstados() {
		if(estados == null || estados.size() == 0)
			estados = estadoDao.findAll();
		return estados;
	}

	public void setEstados(List<Estado> estados) {
		this.estados = estados;
	}
	
}

cidadeBean

package br.com.compracoletiva.beans;

import java.util.ArrayList;
import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Service;
import org.springframework.web.context.WebApplicationContext;

import br.com.compracoletiva.dao.CidadeDao;
import br.com.compracoletiva.entity.Cidade;
import br.com.compracoletiva.entity.Estado;
import br.com.compracoletiva.util.GenericBean;

@Service
@Scope(WebApplicationContext.SCOPE_REQUEST)
public class CidadeBean extends GenericBean {

	@Autowired
	private CidadeDao cidadeDao;

	private List<Cidade> cidades = new ArrayList<Cidade>();

	private long estado;

	public List<Cidade> getCidades() {
		return cidades;
	}

	public void loadCidadesByEstado() {
		if (estado != 0L) {
			cidades = cidadeDao.findAllByEstado(new Estado(estado));
		} else
			cidades = new ArrayList<Cidade>();
	}

	public void setCidades(List<Cidade> cidades) {
		this.cidades = cidades;
	}

	public long getEstado() {
		return estado;
	}

	public void setEstado(long estado) {
		this.estado = estado;
	}

}

administradorBean

package br.com.compracoletiva.beans;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Scope;
import org.springframework.stereotype.Service;
import org.springframework.web.context.WebApplicationContext;

import br.com.compracoletiva.business.AdministradorService;
import br.com.compracoletiva.entity.Administrador;
import br.com.compracoletiva.entity.Login;
import br.com.compracoletiva.util.GenericBean;

@Service
@Scope(WebApplicationContext.SCOPE_REQUEST)
public class AdministradorBean extends GenericBean {

	@Autowired
	private AdministradorService administradorService;

	private Administrador administrador = new Administrador();

	private Login login = new Login();

	public void salvar() {
		administrador.setLogin(login);
		if (administradorService.save(administrador)) {
			addInfoMessage("administrador.action.save");
		} else {
			addErrorMessage("administrador.action.save.error");
		}
		novo();
	}

	public void novo() {
		administrador = new Administrador();
		login = new Login();
	}

	public void excluir() {
		if (administradorService.delete(administrador)) {
			addInfoMessage("administrador.action.delete");
		} else {
			addErrorMessage("administrador.action.delete.error");
		}
	}

	public List<Administrador> getAdministradores() {
		return administradorService.getAdministradores();
	}

	public Administrador getAdministrador() {
		return administrador;
	}

	public void setAdministrador(Administrador administrador) {
		this.administrador = administrador;
	}

	public Login getLogin() {
		return login;
	}

	public void setLogin(Login login) {
		this.login = login;
	}

}

administradores.xhtml
<ui:composition xmlns="http://www.w3.org/1999/xhtml" xmlns:h="http://java.sun.com/jsf/html" xmlns:f="http://java.sun.com/jsf/core" xmlns:ui="http://java.sun.com/jsf/facelets" xmlns:p="http://primefaces.prime.com.tr/ui" template="/template/layoutManager.xhtml"> <ui:define name="title"> <h:outputText value="#{messages['administrador.title.label']}" /> </ui:define> <ui:define name="body"> <p:messages id="messages" showDetail="true" /> <h:form id="formManagerAdministrador"> <h:inputHidden value="#{administradorBean.administrador.idAdministrador}" /> <p:panel header="#{messages['administrador.panelManter.label']}"> <h:panelGrid columns="4"> <h:outputLabel value="#{messages['administrador.nome.label']}" /> <p:inputText id="nome" size="40" value="#{administradorBean.administrador.nome}" label="#{messages['administrador.nome.label']}" required="true" /> <h:outputLabel for="email" value="#{messages['administrador.email.label']}" /> <p:inputText id="email" size="40" value="#{administradorBean.administrador.email}" label="#{messages['administrador.email.label']}" required="true" /> <h:outputLabel for="login" value="#{messages['login.login.label']}" /> <p:inputText id="login" value="#{administradorBean.login.login}" label="#{messages['login.login.label']}" required="true" /> <h:outputLabel for="senha" value="#{messages['login.senha.label']}" /> <p:password id="senha" value="#{administradorBean.login.senha}" promptLabel="#{messages['org.primefaces.password.feedback.promptLabel']}" weakLabel="#{messages['org.primefaces.password.feedback.weak']}" goodLabel="#{messages['org.primefaces.password.feedback.good']}" strongLabel="#{messages['org.primefaces.password.feedback.strong']}" label="#{messages['login.senha.label']}" /> <h:outputLabel value="#{messages['estado.descricao.label']}" /> <h:selectOneMenu id="estado" required="true" value="#{cidadeBean.estado}" label="#{messages['estado.descricao.label']}"> <f:selectItem itemValue="0" itemLabel="#{messages['estado.noneSelected.label']}" /> <f:selectItems value="#{estadoBean.estados}" var="estado" itemLabel="#{estado.descricao}" itemValue="#{estado.idEstado}" /> <p:ajax update="cidade, messages" listener="#{cidadeBean.loadCidadesByEstado}" /> </h:selectOneMenu> <h:outputLabel value="#{messages['cidade.descricao.label']}" /> <h:selectOneMenu id="cidade" required="false" value="#{administradorBean.administrador.cidade}" label="#{messages['cidade.descricao.label']}"> <f:selectItem itemValue="0" itemLabel="#{messages['cidade.noneSelected.label']}" /> <f:selectItems value="#{cidadeBean.cidades}" var="cidade" itemLabel="#{cidade.descricao}" itemValue="#{cidade.idCidade}" /> <f:validator validatorId="cidadeValidator"/> <f:converter converterId="cidadeConverter"/> </h:selectOneMenu> <p:commandButton value="#{messages['button.salvar']}" actionListener="#{administradorBean.salvar}" update="formManagerAdministrador, messages" /> <p:commandButton value="#{messages['button.cancelar']}" actionListener="#{administradorBean.novo}" immediate="true" update="formManagerAdministrador, messages" type="reset" /> </h:panelGrid> </p:panel> </h:form> </ui:define> </ui:composition>

Anyone know how I can fix it?

[Brendan Healey]

I am trying to remember. I had a whole load of trouble with this myself years ago. Given
two selectOneMenus, the first needs a value change listener which updates a list which is
stored in backing bean (obviously). The first selectOneMenu also needs a child f:ajax tag
which render= the 2nd selectOneMenu. I could never make this stuff work with request
scoped beans, but it does work with view scoped beans. It's a bit late and I can't go on
further now but I'll check back, this is however a basic pattern for getting this to work,
but I may well have forgotten something. Try it.

Brendan.