我如何更改"selectOneMenu"的值?无需重新启动"inputText"?

问题描述

我有下一个代码:

<h:form id="form" >
    <h:panelGrid >
        <p:inputText placeholder="Name" value="#{controladorGestionGrados.otherValue}" />
        <p:selectOneMenu value="#{controladorGestionGrados.value}" >
            <f:selectItem itemValue="A" itemLabel="A" />
            <f:selectItem itemValue="B" itemLabel="B" />
            <f:selectItem itemValue="C" itemLabel="C" />
            <p:ajax update=":form"  />
        </p:selectOneMenu>
        <p:outputLabel id="someText"
                       value="Some text"
                       rendered="#{controladorGestionGrados.value eq 'C'}" />
    </h:panelGrid>
</h:form>

首先:我在inputText中写了任何东西.第二:我选择选项C.

First: I write anything in the inputText.Second: I select option C.

此后，显示outputLabel某些文本"，但将重置inputText.

After, the outputLabel "Some text" is displayed, but the inputText is reseted.

如何在不重新启动"inputText"的情况下更改"selectOneMenu"的值?

How I can change the value of "selectOneMenu" without restart the "inputText"?

我尝试过:

<p:ajax update="someText"  />

但是实际上inputText不会重置，但是outLabel不会显示.

But effectively the inputText don't reset, but outLabel don't show.

推荐答案

包装您的< p:outputLabel>

<p:outputLabel id="someText" value="Some text" rendered="#{controladorGestionGrados.value eq 'C'}" />

带支架< p:outputPanel>

喜欢这个:

<p:outputPanel id="someTextPanel">
<p:outputLabel id="someTextLabel" value="Some text" rendered="#{controladorGestionGrados.value eq 'C'}" />
</p:outputPanel>

并使用

<p:ajax update="someTextPanel" />

所以整个代码应该是这样的:

So entire code should be something like this :

<h:form id="form" >
    <h:panelGrid >
        <p:inputText placeholder="Name" value="#{controladorGestionGrados.otherValue}" />
        <p:selectOneMenu value="#{controladorGestionGrados.value}" >
            <f:selectItem itemValue="A" itemLabel="A" />
            <f:selectItem itemValue="B" itemLabel="B" />
            <f:selectItem itemValue="C" itemLabel="C" />
            <p:ajax update="someTextPanel" />
          </p:selectOneMenu>
       <p:outputPanel id="someTextPanel">
    <p:outputLabel id="someTextLabel" value="Some text" rendered="#{controladorGestionGrados.value eq 'C'}" />
    </p:outputPanel>
    </h:panelGrid>
</h:form>

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