[英]Primefaces: ajax navigation and dataTable checkbox selection
我在我的应用程序中遇到复选框选择问题。 我在一页上有一个dataTable(index.xhtml)。 在同一页面上有一个ajax按钮,当用户单击它时,应用程序应导航到另一页面(detail.xhtml)。 详细信息页面包含用于导航回到index.xhtml的返回按钮。 导航有效,但是当用户从详细信息页面返回时,当用户单击它时,不会选中dataTable中的行复选框(选择所有行的标题复选框有效)。 当我重复场景(又名访问详细信息页面并返回)时,复选框再次起作用。 在第三次重复之后,它们不再起作用(因此,每隔两次导航它们都将不起作用)。 当我在按钮上使用ajax =“ false”或faces-redirect = true时,一切正常。
使用Mojarra 2.10.19,PF 3.5和Glassfish 3.2.1
为简单起见,我通过简单的示例重新创建问题:
index.xhtml:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui" >
<h:head></h:head>
<h:body>
<h:form>
<p:commandButton value="Add" action="add" />
<p:dataTable id="cars" var="car" value="#{tableBean.mediumCarsModel}"
selection="#{tableBean.selectedItems}" >
<p:column selectionMode="multiple" style="width: 2%" />
<p:column headerText="Model">
#{car.model}
</p:column>
</p:dataTable>
</h:form>
</h:body>
detail.xhtml:
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:p="http://primefaces.org/ui" >
<h:head></h:head>
<h:body>
<h:form>
<p:commandButton value="Return" action="return" />
</h:form>
</h:body>
TableBean.java
@ManagedBean
@SessionScoped
public class TableBean {
private final static String[] manufacturers;
static {
manufacturers = new String[10];
manufacturers[0] = "Mercedes";
manufacturers[1] = "BMW";
manufacturers[2] = "Volvo";
manufacturers[3] = "Audi";
manufacturers[4] = "Renault";
manufacturers[5] = "Opel";
manufacturers[6] = "Volkswagen";
manufacturers[7] = "Chrysler";
manufacturers[8] = "Ferrari";
manufacturers[9] = "Ford";
}
private List<Car> carsSmall;
private CarDataModel mediumCarsModel;
private List<Car> selectedItems;
public TableBean() {
carsSmall = new ArrayList<Car>();
populateRandomCars(carsSmall, 5);
mediumCarsModel = new CarDataModel(carsSmall);
}
private void populateRandomCars(List<Car> list, int size) {
for (int i = 0; i < size; i++) {
list.add(new Car(manufacturers[i]));
}
}
public List<Car> getSelectedItems() {
return selectedItems;
}
public void setSelectedItems(List<Car> selectedItems) {
this.selectedItems = selectedItems;
}
public CarDataModel getMediumCarsModel() {
return mediumCarsModel;
}
}
CarDataModel.java
public class CarDataModel extends ListDataModel<Car> implements SelectableDataModel<Car> {
public CarDataModel(List<Car> data) {
super(data);
}
@Override
public Car getRowData(String rowKey) {
List<Car> cars = (List<Car>) getWrappedData();
for(Car car : cars) {
if(car.getModel().equals(rowKey)){
return car;
}
}
return null;
}
@Override
public Object getRowKey(Car car) {
return car.getModel();
}
}
汽车.java
public class Car implements Serializable {
private String model;
public String getModel() {
return model;
}
public void setModel(String model) {
this.model = model;
}
public Car(String model) {
this.model = model;
}
}
faces-config.xml
<navigation-rule>
<from-view-id>/index.xhtml</from-view-id>
<navigation-case>
<from-outcome>add</from-outcome>
<to-view-id>/detail.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
<navigation-rule>
<from-view-id>/detail.xhtml</from-view-id>
<navigation-case>
<from-outcome>return</from-outcome>
<to-view-id>/index.xhtml</to-view-id>
</navigation-case>
</navigation-rule>
您可能需要从faces-config.xml中删除导航规则 ,才能尝试以下操作...
index.xhtml
<p:commandButton value="Add" action="#{tableBean.redirectToDetail}" />
detail.xhtml
<p:commandButton value="Return" action="#{tableBean.redirectToIndex}" />
TableBean.java
@ManagedBean(name = "tableBean")
...
...
...
public String redirectToDetail() {
return "detail?faces-redirect=true";
}
public String redirectToIndex() {
return "index?faces-redirect=true";
}
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