检查哪个表格有错误 [英] Check which form has an error

问题描述

我有一个模式窗口，仅在页面上几种形式之一出错时才要启动.是否可以使用el来识别特定表格是否有错误?

I have a modal window that I only want to launch when one of several forms on a page has errors. Is there a way using el to identify if a specific form has errors?

示例伪代码:

<h:form id="form1">

</h:form>

<h:form id="form2">

</h:form>

<a4j:rendered="#{form1.hasErrors()}">
    ... modal here ... 
</a4j:rendered>

推荐答案

如果ajax请求中包含execute="@form"，则可以使用

If you have an execute="@form" in the ajax request, then you could use UIForm#isSubmitted() in combination with FacesContext#isValidationFailed().

<h:form binding="#{form1}">

</h:form>

<h:form binding="#{form2}">

</h:form>

<a4j:xxx rendered="#{form1.submitted and facesContext.validationFailed}">
    Validation of form1 has failed.
</a4j:xxx>

<a4j:xxx rendered="#{form2.submitted and facesContext.validationFailed}">
    Validation of form2 has failed.
</a4j:xxx>

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