我有一个<ui:repeat>迭代a List<String>并<p:commandButton>使用当前String的值创建一个<p:lightBox>.
但是当我添加widgetVar到我<p:lightBox>的属性时,它的值<p:commandButton>始终是最后一次迭代的String.
有人可以解释发生了什么,并(我需要widgetVar)可能指出一个解决方案?
这是我的HTML:
<html 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.org/ui">
<h:head />
<h:body>
<ui:repeat var="thing" value="#{bugBean.things}">
<p:lightBox widgetVar="whatever">
<h:outputLink>
<h:outputText value="#{thing}" />
</h:outputLink>
<f:facet name="inline">
<h:form>
<p:commandButton action="#{bugBean.writeThing(thing)}"
value="#{thing}" />
</h:form>
</f:facet>
</p:lightBox>
</ui:repeat>
</h:body>
</html>
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这是支持bean:
package huhu.main.managebean;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import javax.enterprise.context.SessionScoped;
import javax.inject.Named;
@Named
@SessionScoped
public class BugBean implements Serializable {
private static final long serialVersionUID = 1L;
List<String> things = new ArrayList<String>();
public BugBean(){
things.add("First");
things.add("Second");
things.add("Third");
}
public void writeThing(String thing){
System.out.println(thing);
}
public List<String> getThings() {
return things;
}
public void setThings(List<String> things) {
this.things = things;
}
}
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的widgetVar基本上生成作用域JavaScript变量的窗口.您现在在JavaScript上下文中实际做的是:
window['whatever'] = new Widget(lightboxElement1);
window['whatever'] = new Widget(lightboxElement2);
window['whatever'] = new Widget(lightboxElement3);
// ...
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这样whateverJS中的变量只会引用最后一个变量.
您基本上应该为每个人提供一个唯一的名称,例如通过添加迭代索引:
<ui:repeat var="thing" value="#{bugBean.things}" varStatus="iteration">
<p:lightBox widgetVar="whatever#{iteration.index}">
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这样它变得有效:
window['whatever0'] = new Widget(lightboxElement1);
window['whatever1'] = new Widget(lightboxElement2);
window['whatever2'] = new Widget(lightboxElement3);
// ...
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这样,您就可以通过参考个人的灯箱whatever0,whatever1,whatever2,等.
与具体问题无关:使用单个灯箱并在每次点击时更新其内容是不是更容易?
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