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| Tomahawk Tags |
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If the user enters a wrong input then the
message is displayed like below:
6-Tomahawk validateEqual tag
This tag is used to validate the value against
the other component. In the for attribute we
specify the id of the other component whose
value is compared to the value of the
component for which the validation is
performed. If both are same then no error
otherwise it displays the validation message.
We can render the validation message by the
use of message, detailMessage and summaryMessage attributes.
Code Description:
In this example, we have taken a hidden field
with value “999” and one more input component
where the user is asked to guess the number.
If both matches then next page are rendered
otherwise validation message “Try again...” is displayed in the same page.
<%@ taglib uri=”http://java.sun.com/jsf/
html” prefix=”h”%>
<%@ taglib uri=”http://java.sun.com/jsf/
core” prefix=”f”%>
<%@ taglib uri=”http://myfaces.apache.org/
tomahawk” prefix=”t”%>
<f:view>
<html>
<head>
<meta http-equiv=”Content-Type” |
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content=”text/html;
harset=iso-8859-1">
<title>t:validateEqual example</title>
<style type=”text/css”>
<!—
body{
background-color:#fff2f2;
margin-top:30;
}
—>
</style>
</head>
<body >
<h:form>
<center>
<t:panelGrid columns=”1" style=”fontweight:
bold;” width=”40%”>
<t:inputHidden id=”ih” value=”999" />
<t:outputText value=”Can you guess the
number?” />
<t:panelGroup>
<t:inputText id=”number” required=”true”>
<t:validateEqual for=”ih”
message=”Try again.......”/>
</t:inputText>
<f:verbatim></br></f:verbatim>
<t:message for=”number”/>
</t:panelGroup>
<t:commandButton id=”cb”
image=”images/submit_button.gif”
action=”welcome”/>
</t:panelGrid>
</center>
</h:form>
</body>
</html>
</f:view>
Rendered Output:
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Oct 2007 | Java Jazz Up | 39 |
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