我不确定我是否犯了一个愚蠢的错误,但在一个非常简单的情况下,这对我来说并不适用:在我的tabview / tabs中,当我从一个选项卡切换到另一个选项卡时,我想保存在表单中输入的数据。 “提交”按钮在每个选项卡上都可以正常工作,但tabchange事件会将我的所有表单数据显示为null。我已经尝试过@all,@ form,@ this,似乎没什么用。与更新选项相同。
这是XHTML:
<h:form id="form">
<p:growl id="msgs" showDetail="true" keepAlive="5000" />
<p:tabView id="tView" dynamic="true" cache="false" >
<p:ajax event="tabChange" listener="#{deleteMe.onTabChange}" update=":form:msgs" />
<p:tab title="MyTitle I" id="tab1">
<p:fieldset legend="Personal Information" toggleable="false" >
<h:panelGrid columns="2" cellpadding="10">
Value 1: <p:inputText value="#{deleteMe.thingOne}"></p:inputText>
Value 2: <p:inputText value="#{deleteMe.thingTwo}"></p:inputText>
<p:commandButton value="Submit" id="ajax" update=":form:msgs" action="#{deleteMe.onSubmit}" />
</h:panelGrid>
</p:fieldset>
</p:tab>
<p:tab title="MyTitle II" id="tab2">
<p:fieldset legend="Social Information" toggleable="false">
<h:panelGrid columns="2" cellpadding="10">
<p:inputText value="#{deleteMe.thingThree}"></p:inputText>
<p:commandButton value="Submit" id="ajax2" update=":form:msgs" action="#{deleteMe.onSubmit}" />
</h:panelGrid>
</p:fieldset>
</p:tab>
</p:tabView>
</h:form>
这是我的支持bean:
`
import javax.annotation.PostConstruct;
import javax.inject.Named;
import org.primefaces.event.TabChangeEvent;
import org.springframework.context.annotation.Scope;
@Named(value = "deleteMe")
@Scope("view")
public class DeleteBean implements Serializable {
private static final long serialVersionUID = 47L;
private String thingOne;
private String thingTwo;
private String thingThree;
@PostConstruct
public void initialize() {
}
public void onTabChange(TabChangeEvent event) {
System.out.println("Saving draft, current index: "+ event.getTab().getTitle());
System.out.println(thingOne);
System.out.println(thingTwo);
saveDraft();
}
public void onSubmit() {
System.out.println(thingOne);
System.out.println(thingTwo);
System.out.println(thingThree);
saveDraft();
}
public void saveDraft() {
System.out.println("This is thing 1 value: "+thingOne);
System.out.println("This is thing 2 value: "+thingTwo);
System.out.println("This is thing 2 value: "+thingThree);
}
public String getThingOne() {
return thingOne;
}
public void setThingOne(String thingOne) {
this.thingOne = thingOne;
}
public String getThingTwo() {
return thingTwo;
}
public void setThingTwo(String thingTwo) {
this.thingTwo = thingTwo;
}
public String getThingThree() {
return thingThree;
}
public void setThingThree(String thingThree) {
this.thingThree = thingThree;
}
}
`
在tabchange事件上,它触发方法,但值都为null。
SystemOut O This is thing 1 value: null
SystemOut O This is thing 2 value: null
SystemOut O This is thing 2 value: null
如果我犯了一些愚蠢的错误,你能指出吗?谢谢。
正确的答案是在p:ajax命令中使用skipChildren =“false”。
https://github.com/primefaces/primefaces/issues/2525
<p:ajax event="tabChange"
skipChildren="false"
listener="#{deleteMe.onTabChange}"
update=":form:msgs" />
看到了解决方法,但我不确定它为什么这样工作:
我必须在tabView上添加带有tabchange监听器的远程命令。
<p:remoteCommand name="onTabChangeProcess" process="tView, @this"/>
<p:tabView activeIndex="#{deleteMe.activeIndex}" id="tView" onTabChange="onTabChangeProcess()">
<p:ajax event="tabChange" listener="#{deleteMe.onTabChange}" update="tView" process="tView"/>
这使表单按预期工作。