# OpenLink Virtuoso Universal Server: Documentation - error-summary

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Virtuoso Functions Guide

## error-summary

Placeholder for error messages.
< error-summary match (optional) debug-srcfile (optional) debug-srcline (optional) debug-log (optional) />
Description

Placeholder for form error messages. This is used on a form to mark where error messages resulting from field or form validation are to be placed. This will be rendered if the vc_is_valid member of the enclosing page is false. If rendered, this prints an error message generated by a validator or a catch handler. This control wiil not be instantiated. The error-summary may show errors for all controls or for a group of controls whose name matches a given regular expression. The vc_error_message members of all controls whose validation failed will be shown at the place marked by this control if attribute 'match' is not specified. Otherwise the vc_error_message of controls whose validation failed and 'name' matches the pattern specified will be shown.

Attributes
match

This attribute specifies a regular expression to be matched against names of controls with failed validation. The expression may match more than one control name, concatenating the messages in document order of controls. In this way an error summary may appear in different places of the page to print errors for different controls.

debug-srcfile

URI of the source document where the tag comes from.

debug-srcline

Line number in the source document where the tag comes from.

debug-log

This defines what sort of data are saved to the debugging log.

Examples
Validation of text area input

<?xml version="1.0"?> <!-- - - $Id: error_summary__0.vspx,v 1.2 2006/08/16 00:04:15 source Exp $ - - This file is part of the OpenLink Software Virtuoso Open-Source (VOS) - project. - - Copyright (C) 1998-2006 OpenLink Software - - This project is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by the - Free Software Foundation; only version 2 of the License, dated June 1991. - - This program is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - The form contains two v:textarea controls with v:validator elements inside. When the OK button is pressed data are posted back to the same URI so the page is instantiated again. If any validator found a violation the message is shown to the user in the place specified by v:error-summary element.

    <v:page name="error_summary__0" xmlns:v="http://www.openlinksw.com/vspx/">
      <html>
        <head>
          <title>VSPX samples | v:error-summary</title>
        </head>
        <body>
          <v:error-summary />
          <v:form name="form1" type="simple" action="" method="POST">
            <v:textarea name="ta1" default="enter your first text here" value="--coalesce ({?'ta1'}, control.ufl_value)" error-glyph="*">
              <v:validator test="length" min="0" max="50" message="The length of the first input should not exceed 50 chars."/>
            </v:textarea>
            <v:textarea name="ta2" default="enter your second text here" value="--coalesce ({?'ta1'}, control.ufl_value)" error-glyph="*">
              <v:validator test="length" min="0" max="50" message="The length of the second input should not exceed 50 chars."/>
            </v:textarea>
            <v:button name="submit1" action="simple" value="OK"/>
          </v:form>
        </body>
      </html>
    </v:page>

Validation of text area input with separate error summaries place

<?xml version="1.0"?> <!-- - - $Id: error_summary__1.vspx,v 1.2 2006/08/16 00:04:15 source Exp $ - - This file is part of the OpenLink Software Virtuoso Open-Source (VOS) - project. - - Copyright (C) 1998-2006 OpenLink Software - - This project is free software; you can redistribute it and/or modify it - under the terms of the GNU General Public License as published by the - Free Software Foundation; only version 2 of the License, dated June 1991. - - This program is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License along - with this program; if not, write to the Free Software Foundation, Inc., - 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA - - The form contains two v:textarea controls with v:validator elements inside. When the OK button is pressed data are posted back to the same URI so the page is instantiated again. If any validator found a violation the message is shown to the user in the place specified by v:error-summary element depending of a match attribute.

    <v:page name="error_summary__0" xmlns:v="http://www.openlinksw.com/vspx/">
      <html>
        <head>
          <title>VSPX samples | v:error-summary</title>
        </head>
        <body>
          <v:error-summary match="ta1"/>
          <v:form name="form1" type="simple" action="" method="POST">
            <v:textarea name="ta1" default="enter your first text here" value="--coalesce ({?'ta1'}, control.ufl_value)" error-glyph="*">
              <v:validator test="length" min="0" max="50" message="The length of the first input should not exceed 50 chars."/>
            </v:textarea>
          <v:error-summary match="ta2"/>
            <v:textarea name="ta2" default="enter your second text here" value="--coalesce ({?'ta1'}, control.ufl_value)" error-glyph="*">
              <v:validator test="length" min="0" max="50" message="The length of the second input should not exceed 50 chars."/>
            </v:textarea>
            <v:button name="submit1" action="simple" value="OK"/>
          </v:form>
        </body>
      </html>
    </v:page>