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jsf - p:commandButton doesn't dislpay p:dialog

问题描述

i have a problem with the display of a dialog on a click. It's a obvious one but i can't spot the bug. I've been stuck on this for days, it's crazy. Can you help me please.

<h:form id="form">

<p:commandButton
    rendered="#{characterBean.characterSession.characterName ne null}"
    value="#{characterBean.characterSession.title.titleName}"
    icon="fa fa-fw fa-edit" onclick="PF('dlg').show();"
    update="@form"/>

<p:dialog id="titleDetail" header="#{i18n['title.yourTitles']}"
    widgetVar="dlg" dynamic="true" closable="false" resizable="false"
    showEffect="fade" hideEffect="fade">
    <h:panelGroup>
        <p:messages autoUpdate="true" />
        <h:selectOneMenu id="titleSelect" converter="#{titleConverter}"
            value="#{characterBean.characterSession.title}">
            <f:selectItems value="#{characterBean.titleUnlocked}" var="t"
                itemValue="#{t}" itemLabel="#{t.titleName}" />
        </h:selectOneMenu>
        <hr />
        <h:panelGrid columns="2" style="width: 100%; text-align:center">
            <p:commandButton value="#{i18n['general.submit']}"
                icon="fa fa-check"
                actionListener="#{characterBean.updateCharacterTitle}"
                oncomplete="PF('dlg').hide();" update="@form" />

            <p:commandButton value="#{i18n['general.cancel']}"
                icon="fa fa-close" action="#{characterBean.submitCancel}"
                oncomplete="PF('dlg').hide();" update="@form" process="@this" />
        </h:panelGrid>
        <p:remoteCommand name="updateForm()" process="@this" update="@form" />
    </h:panelGroup>
</p:dialog>

</h:form>

标签： jsfprimefaces

解决方案

核心问题本质上是这样的：

<h:form>
    <p:commandButton onclick="PF('dlg').show();" update="@form"/>

    <p:dialog widgetVar="dlg">
        ...
    </p:dialog>
</h:form>
  • 的默认状态<p:dialog>为隐藏。
  • 显示onclick对话框。
  • update更新<h:form>. _
  • <p:dialog>也包含在更新中。
  • 所以，<p:dialog>又被隐藏了。

有几种解决方案：

  1. 不要让update包括<p:dialog>.

    <h:form>
    <h:panelGroup id="outsideDialog">
        <p:commandButton onclick="PF('dlg').show();" update="outsideDialog"/>
    </h:panelGroup>

    <p:dialog widgetVar="dlg">
        ...
    </p:dialog>
</h:form>

  2. 替换onclick为，因为oncomplete它在update.

    <h:form>
    <p:commandButton update="@form" oncomplete="PF('dlg').show();" />

    <p:dialog widgetVar="dlg">
        ...
    </p:dialog>
</h:form>

  3. 移到<p:dialog>外面<h:form>并给它自己的<h:form>。

    <h:form>
    <p:commandButton update="@form :dlg" oncomplete="PF('dlg').show();" />
</h:form>

<p:dialog id="dlg" widgetVar="dlg">
    <h:form>
        ...
    </h:form>
</p:dialog>

    或者，取决于您是否真的需要更新对话框的内容

    <h:form>
    <p:commandButton onclick="PF('dlg').show();" update="@form" />
</h:form>

<p:dialog widgetVar="dlg">
    <h:form>
        ...
    </h:form>
</p:dialog>

推荐的解决方案是 3。

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