ajax - 根据 selectOneMenu 禁用 inputText Primefaces

Question

我有一个带有 selectOneMenu 的表单，其中有两个选项和一个 inputText，如果用户选择第二个选项，则必须禁用它。我认为我应该使用 ajax 来更新 inputText，这就是我所做的，但不起作用。这是我的代码，请帮助我。谢谢

<h:outputText value="Modalita"></h:outputText>
    <p:selectOneMenu value="#{vociCostoBean.selected.modalita}" immediate="true">    
        <f:selectItem itemLabel="Importo" itemValue="0"/>  
        <f:selectItem itemLabel="Quantita" itemValue="1"/>  
        <p:ajax update="uc" />  
    </p:selectOneMenu>  

    <h:outputText value="Costo Unitario"></h:outputText>
    <p:inputText id="uc" disabled="#{vociCostoBean.selected.modalita !='1'}" value="#{vociCostoBean.selected.CUnitario}" />
    <br></br>

还有这个 vociCostoBean：

@ManagedBean
@SessionScoped
public class VociCostoBean {

@EJB
private CostoBeanRemote cust;

private List<VociCosto> list;
private VociCosto selected= new VociCosto();
private boolean UcDisabled=true;


@PostConstruct
public void init(){
    setList(new ArrayList<VociCosto>());
    setList(cust.getAll());
    //selected.setModalita("0");
}

public String newCosto(){
    return "editCosto";
}

public void onRowSelect(){
    FacesContext fc = FacesContext.getCurrentInstance();
    System.out.println("|||||"+ getSelected().getNome());

    try {
        fc.getExternalContext().redirect("editCosto.jsf");
    } catch (IOException e) {
    }
}

public VociCosto getSelected() {
    return selected;

}

public void setSelected(VociCosto selected) {
    this.selected = selected;

}

public void setCust(CostoBeanRemote cust) {
    this.cust = cust;
}

public List<VociCosto> getList() {
    return list;
}

public void setList(List<VociCosto> list) {
    this.list = list;
}

public boolean isUcDisabled() {
    return UcDisabled;
}

public void setUcDisabled(boolean ucDisabled) {
    this.UcDisabled = ucDisabled;
}


}

这是 VociCosto.java

 package it.bway.timerep.entities;

 import java.io.Serializable;
 import javax.persistence.*;
 import java.util.Set;


 /**
  * The persistent class for the VOCI_COSTO database table.
  * 
  */
 @Entity
 @Table(name="VOCI_COSTO")
 public class VociCosto implements Serializable {
private static final long serialVersionUID = 1L;

@Id
@GeneratedValue(strategy=GenerationType.AUTO)
@Column(name="ID_COSTO", unique=true, nullable=false)
private int idCosto;

@Column(name="C_UNITARIO")
private int cUnitario;

@Column(length=1)
private String modalita;

@Column(length=50)
private String nome;

//bi-directional many-to-one association to NoteSpese
@OneToMany(mappedBy="vociCosto", fetch=FetchType.EAGER)
private Set<NoteSpese> noteSpeses;

public VociCosto() {
}

public int getIdCosto() {
    return this.idCosto;
}

public void setIdCosto(int idCosto) {
    this.idCosto = idCosto;
}

public int getCUnitario() {
    return this.cUnitario;
}

public void setCUnitario(int cUnitario) {
    this.cUnitario = cUnitario;
}

public String getModalita() {
    return this.modalita;
}

public void setModalita(String modalita) {
    this.modalita = modalita;
}

public String getNome() {
    return this.nome;
}

public void setNome(String nome) {
    this.nome = nome;
}

public Set<NoteSpese> getNoteSpeses() {
    return this.noteSpeses;
}

public void setNoteSpeses(Set<NoteSpese> noteSpeses) {
    this.noteSpeses = noteSpeses;
}
@Override
public boolean equals(Object obj) {
    try{
        VociCosto toCompare = (VociCosto) obj;
        if (idCosto==toCompare.getIdCosto()) return true;
        return false;
    } catch (Exception e){
        return false;
    }
}

@Override
public int hashCode(){
            return idCosto;
}

}

score 0 · Accepted Answer

你所做的与你所期望的完全相反。你应该改变

#{vociCostoBean.selected.modalita != '1'}

至

#{vociCostoBean.selected.modalita == '1'}

工作测试用例

看法：

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
    xmlns:ui="http://java.sun.com/jsf/facelets"
    xmlns:h="http://java.sun.com/jsf/html"
    xmlns:f="http://java.sun.com/jsf/core"
    xmlns:p="http://primefaces.org/ui">

    <h:head>

    </h:head>
    <h:body>
        <h:form>
            <h:outputText value="Modalita"></h:outputText>
            <p:selectOneMenu value="#{selectMenuActions.value}" immediate="true">    
                <f:selectItem itemLabel="Importo" itemValue="0"/>  
                <f:selectItem itemLabel="Quantita" itemValue="1"/>  
                <p:ajax update="uc" />  
            </p:selectOneMenu>  

            <h:outputText value="Costo Unitario"></h:outputText>
            <p:inputText id="uc" disabled="#{selectMenuActions.value == '1'}" value="#{vociCostoBean.selected.CUnitario}" />
            <br></br> 
        </h:form>
    </h:body>
</html>

豆：

@ManagedBean
@ViewScoped
public class SelectMenuActions
{
    private String m_sValue;

    public void setValue(String p_sValue)
    {
        m_sValue = p_sValue;
    }

    public String getValue()
    {
        return m_sValue;
    }
}

ajax - 根据 selectOneMenu 禁用 inputText Primefaces

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