如何根据支持 bean 条件有条件地显示 p:dialog [英] How to conditionally show p:dialog based on backing bean condition

问题描述

有没有办法(或正确的方式)有条件地根据支持 bean 条件在 primefaces 上显示对话框?代码如下所示:

Is there any way (or a correct way) to conditionally show a dialog on primefaces based on a backing bean condition? The code looks like the following:

<!-- dialog declaration -->
<p:dialog id="dialogTest" widgetVar="dialogTest" header="#{text['modal.header']}" modal="true" >
                <h:outputText value="Test output" />
            </p:dialog>
<!-- caller -->
<p:menuitem value="Check" actionListener="#{backingBean.performCheck}" oncomplete="PF('dialogTest').show()" icon="ui-icon-arrowthick-1-e"/>                            

我的支持 bean 如下所示:

My backing bean looks like the following:

private boolean conditionFlag; // ... +getter

public void performCheck() {
    // ... access managers (database)
    this.conditionFlag = dao.check();// some check;
}

我只想在 conditionFlag 为 true 的情况下显示对话框.performCheck 运行后，如何在 p:menuitem 上执行类似操作?

I just want to show the dialog in case the conditionFlag is true. How can I do something like this on p:menuitem after performCheck runs?

oncomplete="if (#{backingBean.conditionFlag}) { PF('dialogTest').show() }"

• JSF 2.0
• Primefaces 5
• Java 1.7

推荐答案

只需将 update="@this" 添加到 p:menuitem 即可.那么您的 oncomplete 块将按照您的预期工作.

just add update="@this" to the p:menuitem. then your oncomplete block will work as you expect it to.

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