转义具有必填字段的primefaces/jsf页面 [英] Escape a primefaces/jsf page that has required fields

问题描述

我有一个jsf页面，

<h:inputText required="true">属性. 当我单击添加按钮时，如果该字段为空白，我想看到一个错误.

<h:inputText required="true"> attribute. When I click on my add button, I want to see an error if the field is blank.

我有一个<f:message>来显示它.

但是我如何才能转义(取消)该字段为空白的页面?就我而言，它会不断发布错误消息，并且我必须在该字段中输入一些内容才能转到另一页.

But how can I escape (cancel) the page with that field blank? In my case it continually posts the error message and I have to enter something in the field to go to another page.

推荐答案

如果您的取消按钮是 POST 请求，例如<p:commandButton>，<h:commandButton>，<p:commandLink>或<h:commandLink>

If your cancel button is a POST requests e.g. <p:commandButton>,<h:commandButton>, <p:commandLink>, or <h:commandLink>

您可以将取消按钮放在具有 <h:inputText> 的表单之外，以便不提交表单

You can put your cancel button outside the form that has the <h:inputText> so that form is not submitted

<h:form>
    <h:inputText value="#{bean.string}" required="true"/>
</h:form>
<h:form>
     <p:commandButton value="Cancel" action="anotherpage.xhtml"/>
</h:form>

如果您导航时没有任何操作或方法调用，则可以使用 GET 请求，例如<h:button>，<p:button>，<h:link>或<h:outputLink>.

If you are navigating without any actions or method invocation, then you can use GET requests e.g. <h:button>, <p:button>, <h:link> or <h:outputLink>.

示例:

 <h:form>
    <h:inputText value="#{bean.string}" required="true"/>
    <p:button value="Cancel" outcome="anotherpage.xhtml"/>
 </h:form>

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