[英]How to block negative numbers on h:inputText with JSF
I´m using jsf to build a form, and I have this kind of inputtext: 我使用jsf来构建表单,我有这种输入文本:
<div class="profile-info-row">
<div class="profile-info-name">Promoção:</div>
<div class="profile-info-value">
<span class="input-icon input-icon-right">
<h:inputText id="promocao" class="input-medium"
value="#{itemController.itemPreco.promocao}"
converterMessage="Valor inválido. (Ex.: 0.00)">
<f:convertNumber locale="pt"/>
<f:ajax event="change" render="promocaoMensagem"/>
</h:inputText>
</span>
<div class="help-inline mensagemErro">
<h:message for="promocao" id="promocaoMensagem"/>
</div>
</div>
</div>
and I have to block negative numbers and give a message to user inline that number is forbidden, how is working when the user types a invalid number on input.. 我必须阻止负数并向用户发送一条消息,内联该号码是禁止的,当用户在输入上输入无效数字时如何工作..
Does someone know how I can do that? 有人知道我该怎么做吗?
Use <f:validateLongRange>
with a minimum
of 0
. 使用
<f:validateLongRange>
minimum
为0
。
<h:inputText ...>
<f:validateLongRange minimum="0" />
</h:inputText>
The default validation message is: 默认验证消息是:
Validation Error: Value is less than allowable minimum of '0'
验证错误:值小于允许的最小值“0”
Any custom validation message can be set via validatorMessage
the same way as you did for converterMessage
. 可以通过
validatorMessage
以与converterMessage
相同的方式设置任何自定义验证消息。
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