(Quick Reference)
hasErrors
Purpose
Checks whether a bean, request scope, or model reference has any errors and if so invokes the body of the tag. Typically used in conjunction with either
eachError or
renderErrorsExamples
Checks whether there are any errors for any bean throughout the request scope:
<g:hasErrors>
<g:eachError><p><g:message error="${it}"/></p></g:eachError>
</g:hasErrors>Checks whether there are any errors for the specified bean
<g:hasErrors bean="${book}">
<g:eachError><p><g:message error="${it}"/></p></g:eachError>
</g:hasErrors>Checks whether there are any errors for the field "title" of the specified "book" bean:
<g:hasErrors bean="${book}" field="title">
<div class="errors">
<g:renderErrors bean="${book}" field="title" as="list" />
</div>
</g:hasErrors>As a method call in GSP:
<div class="prop ${hasErrors(bean:user,field:'login', 'errors')}">
<label for="login"><input type="text" name="login" />
</div>In this case we check for a field error on a particular field and set a CSS class on the surrounding div thus allowing us to highlight the error with a red border by appending the
errors CSS class.
Checking for errors inside a nested object:
<div class="prop ${hasErrors(bean:parent, field:'child.name', 'errors')}">
<label for="child.name" />
<input type="text" name="child.name"
value="${fieldValue(bean: parent, field: 'child.name'} />
</div>Description
Attributes
bean (optional) - The bean to check for errorsmodel (optional) - The name of the model reference to check for errorsfield (optional) - Check if a field of the bean or model reference has errors
Source
