[英]Address JSF component in ui:repeat
I'm trying to update an element within an UI-repeat, but unfortunately I still haven't discovered how to correctly address the outputPanel from within the dataTable. 我正在尝试更新UI重复中的元素,但是不幸的是,我仍然没有发现如何从dataTable中正确寻址outputPanel。 I am aware that this problem comes from the different naming containers, nevertheless, I hope there will be a solution. 我知道这个问题来自不同的命名容器,不过,我希望会有解决方案。
<h:body>
<h:form id="form">
<ui:repeat var="_entry" value="#{test.entries}">
<p:outputPanel id="counterPanel">
<h:outputText value="#{test.counter}" />
</p:outputPanel>
<p:dataTable var="_p" id="paramTable" value="#{_entry.params}">
<p:column headerText="Options">
<p:commandLink value="Update" update="counterPanel" />
</p:column>
</p:dataTable>
</ui:repeat>
</h:form>
</h:body>
The code example above raises the following exception: 上面的代码示例引发以下异常:
javax.servlet.ServletException: Cannot find component with identifier "counterPanel" in view.
Thx, Jakob 雅各布·Thx
Two ways: 两种方式:
You need to give the <ui:repeat>
a client ID so that you can refer it by the absolute client ID path: 您需要给<ui:repeat>
一个客户端ID,以便您可以通过绝对客户端ID路径引用它:
<h:form id="form"> <ui:repeat id="entries" var="_entry" value="#{test.entries}"> <p:outputPanel id="counterPanel"> <h:outputText value="#{test.counter}" /> </p:outputPanel> <p:dataTable var="_p" id="paramTable" value="#{_entry.params}"> <p:column headerText="Options"> <p:commandLink value="Update" update=":form:entries:counterPanel" /> </p:column> </p:dataTable> </ui:repeat> </h:form>
Move the <h:form>
to inside the outer loop so that you can use @form
: 将<h:form>
移到外部循环内部,以便可以使用@form
:
<ui:repeat var="_entry" value="#{test.entries}"> <h:form id="form"> <p:outputPanel id="counterPanel"> <h:outputText value="#{test.counter}" /> </p:outputPanel> <p:dataTable var="_p" id="paramTable" value="#{_entry.params}"> <p:column headerText="Options"> <p:commandLink value="Update" update="@form" /> </p:column> </p:dataTable> </h:form> </ui:repeat>
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