如何从JSF组件获取验证状态 [英] How to get validation status from JSF component

问题描述

我想设置一个特殊的错误类以将div块放入我的JSF自定义组件中.如果此字段通过验证失败，我想将errorClass设置为"error".

I want set a special error class to div block into my custom component for JSF. I want set errorClass to "error" if this field failed the validation.

<c:if test="${?????}">
    <c:set var="errorClass" value="error" />    
</c:if>

<div class="input ${errorClass}">
    <label for="#{rich:clientId('input')}:input">#{cc.attrs.label}</label>
    <h:inputText id="input" value="#{cc.attrs.value}"
        <cc:insertChildren />
    </h:inputText>
</div>

推荐答案

您可以在inputText的style或styleClass属性内使用component.valid:

You can use component.valid inside the style or styleClass attribute of your inputText:

<h:inputText value="#{cc.attrs.value}" 
             styleClass="#{component.valid ? '' : 'error'}" />

但是，这在您的div中不起作用，因为它不是jsf组件.您可以尝试组件绑定(从理论上讲，未经测试):

However, this won't work in your div since it is no jsf component. You could try component binding (from theory, not tested):

<div class="#{myComponent.valid ? '' : 'error'}">
    <h:inputText id="input" value="#{cc.attrs.value}" binding="#{myComponent}">
        <cc:insertChildren />
    </h:inputText>
</div>

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