JSF按钮的onclick事件调用bean方法 [英] JSF button onclick event call bean method

问题描述

在JSF 2中，我需要在显示对话框之前准备好数据.在下面的代码中，在viewscoped托管Bean中定义了方法"newAuto".单击按钮后，我要先调用此方法，然后显示对话框.

In the JSF 2, I need to get ready the data before showing a dialog. In the code below, the method 'newAuto' defined in the viewscoped managed bean. once button is clicked, I want to call this method first, then show dialog.

我尝试了很多方法，但都失败了.

I tried lots of ways, all failed.

谢谢

<h:commandButton  type="button" value="Add Dialog"   onclick="jsf.ajax.request(this, event, {execute: 'newAuto'});  autoDialog2.show(); return false;" />

推荐答案

您应该先使用<f:ajax>标记，然后使用其onevent属性.

You should be using the <f:ajax> tag and then its onevent attribute.

<h:commandButton value="Add Dialog" action="#{bean.newAuto}">
    <f:ajax onevent="function(data) { if (data.status == 'success') autoDialog2.show(); }" />
</h:commandButton>

也许您还想将render="someDialogId"添加到<f:ajax>，这应该事先更新对话框的内容.

Maybe you also want to add render="someDialogId" to <f:ajax> which should update the dialog's content beforehand.

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