我有一个JSF / PrimeFaces 2.x的用户界面与复选框（H：selectOneBooleanCheckbox），它的值会影响其他部件。是这样的：

I have a JSF / PrimeFaces 2.x UI with a check box (h:selectOneBooleanCheckbox) whose value affects other widgets. Something like:

[X] checkbox1
  [____|V] combobox1
  [X] checkbox2

在checkbox1是假的，对于ComboBox选择的值必须为空，checkbox2也一定是假的。

When checkbox1 is false, the selected value for combobox1 must be null, and checkbox2 must also be false.

我想使用Ajax在检查checkbox1的支持bean设置的值，但我不知道如何添加AJAX支持啊：selectOneBooleanCheckbox

I'd like to use ajax to set the values in the backing bean on check of checkbox1, but I don't know how to add ajax support for a h:selectOneBooleanCheckbox

谁能帮助？谢谢， 罗布

Can anyone help? Thanks, Rob

推荐答案

谷＆LT; F：AJAX＆GT; 与监听器在checkbox1方法，由它来完成所需的作业，呈现ComboBox1的和checkbox1。

Nest <f:ajax> with a listener method in checkbox1 which does the desired job and renders the combobox1 and checkbox1.

是这样的：

<h:selectBooleanCheckbox value="#{bean.checkbox1}">
    <f:ajax listener="#{bean.listener}" render="combobox1 checkbox2" />
<h:selectBooleanCheckbox>
<h:selectOneMenu id="combobox1" value="#{bean.combobox1}">
    <f:selectItems ... />
</h:selectOneMenu>
<h:selectBooleanCheckbox id="checkbox2" value="#{bean.checkbox2}" />

与

public void listener() {
    if (!checkbox1) {
        combobox1 = null;
        checkbox2 = false;
    }
}

PrimeFaces本身有一个＆LT;电话号码：AJAX＆GT; 它提供simlilar功能。它仅使用更新属性，而JSF标准＆LT; F：AJAX＆GT; 使用渲染属性。

PrimeFaces itself has a <p:ajax> which offers simlilar functionality. It only uses update attribute whereas JSF standard <f:ajax> uses render attribute.