renderErrors

def renderErrors = { attrs, body ->
        def renderAs = attrs.remove('as')
        if(!renderAs) renderAs = 'list'
        if(renderAs == 'list') {
            out << "<ul>"
            out << eachError(attrs, {
                out << "<li>${message(error:it, encodeAs:"HTML")}</li>"
              }
            )
            out << "</ul>"
        }
        else if(renderAs.equalsIgnoreCase("xml")) {
            def mkp = new MarkupBuilder(out)
            mkp.errors {
                eachError(attrs, {
                    error(object:it.objectName,
                          field:it.field,
                          message:message(error:it),
                          'rejected-value':StringEscapeUtils.escapeXml(it.rejectedValue))
                })
            }
        }
    }