h:inputText 不会在验证时重新渲染标签

发布于 2024-09-26 22:56:34 字数 1020 浏览 0 评论 0原文

当我尝试在验证时调用 h:inputText 标签字段值时，遇到了一个特殊问题。仅当我将静态值传递给标签字段时它才有效。当我向它传递动态值时，当该字段的某些验证失败时，它无法呈现标签。

<h:inputText id="fullNameField" value="#{newUserFormBean.fullName}"
       **label="${nlsSupport.label_fullName}"** required="true" size="32"  styleClass="required">                        
               <f:validateLength minimum="3" maximum="64"/>
</h:inputText>

如果最小长度验证失败，错误消息将显示为：

此处没有呈现标签：必须至少 3 个字符

但是当我对标签进行硬编码而不是向其传递动态值时，它会显示有效的验证消息，屏幕上打印有标签名称。

<h:inputText id="fullNameField" value="#{newUserFormBean.fullName}"
      **label="Full Name"** required="true" size="32" styleClass="required">      
      <f:validateLength minimum="3" maximum="64"/>
     </h:inputText>

现在，如果最小长度验证失败，错误消息将显示为：

全名：必须至少 3 个字符

我还查看了 JSF 文档，它显示标签接受表达式语言表达式。那么为什么传递的动态值验证失败后不渲染呢？

另外，我需要动态传递标签（从资源包），以便为不同语言添加国家语言功能。这就是迫使我将动态值传递给标签属性而不是静态字段的原因。

谢谢。

原文

I am running into a peculiar problem when I am trying to invoke h:inputText label field value on validation. It only works when I pass a static value to label field. The time I pass a dynamic value to it, it fails to render the label when some validation fails for that field.

<h:inputText id="fullNameField" value="#{newUserFormBean.fullName}"
       **label="${nlsSupport.label_fullName}"** required="true" size="32"  styleClass="required">                        
               <f:validateLength minimum="3" maximum="64"/>
</h:inputText>

If the validation fails for Minimum length, the error message is displayed as:

no label rendered here: must be minimum 3 characters

But when I hard code the label instead of passing a dynamic value to it, it displays a valid validation message, with label name printed on screen.

<h:inputText id="fullNameField" value="#{newUserFormBean.fullName}"
      **label="Full Name"** required="true" size="32" styleClass="required">      
      <f:validateLength minimum="3" maximum="64"/>
     </h:inputText>

Now, if the validation fails for Minimum length, the error message is displayed as:

Full Name: must be minimum 3 characters

I have also looked at the JSF documentation, and it reads that the label accepts expression language expressions. So why is the dynamic value passed not rendering after failure validation?

Also, I need to pass the label dynamically (from Resource bundle), so as to add National Language Feature for different languages. This is the reason which forces me to pass a dynamic value to the label attribute instead of a static field.

Thanks.

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