# OpenLink Virtuoso Universal Server: Documentation - radio-group

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## radio-group

A group of radio-buttons.
< radio-group name (required) annotation (optional) initial-enable (optional) enabled (optional) instantiate (optional) control-udt (optional) xsd-stub-xhtml (optional) width (optional) height (optional) error-glyph (optional) auto-submit (optional) column (optional) debug-srcfile (optional) debug-srcline (optional) debug-log (optional) />
Description

This control is used to group containing radio-buttons in a group. This ensures that only one button is selected at a time. Note: This control is not mandatory for making such group of buttons, another option is to use 'group-name' attribute of the radio-button control.

Attributes
name = SqlName

A page level unique name identifying a control.

annotation

A human readable comment.

initial-enable = CalculateableValue

Determines whether a control is initially visible. True by default. Could be data-bound to an SQL expression.

enabled = CalculateableValue

Determines whether a control is visible. True by default. Could be data-bound to an SQL expression.

instantiate = CalculateableValue

Determines whether a control instantiate its children. It is true by default. It could be data-bound to an SQL expression. Unlike most of calcucateable attributes, the value of this attribute for a control is calcluated before calling 'on-init' event handler of the control; other values are calculated before calling 'before-data-bind' event handler.

control-udt = SqlName

At run time every control is represented as an instance of some user-defined type (UDT). VSPX compiles selects the UDT to use depending on name of the XML element that represents the control and maybe some of its attributes. In some specific cases the application developer may instruct VSPX compiler to use some other UDT, e.g. an application-specific UDT that is derived from the preset one. If specified, the value of 'control-udt' attribute should be equal to the name of the desired target UDT.

xsd-stub-xhtml

This attribute is for internal use only. It has no effect if added to the source VSPX file.

width

Visible width of the control when it is displayed in WYSIWYG tools when the source VSPX text is edited. The value of this attribute will not be used when the resulting HTML is rendered.

height

Visible width of the control when it is displayed in WYSIWYG tools when the source VSPX text is edited. The value of this attribute will not be used when the resulting HTML is rendered.

error-glyph

The character to be displayed near the resulting HTML input element if the test of v:validator of the element detects an error in the current value of the element.

auto-submit

Flag to auto submit the parent form if value of the control is changed.

column = SqlName

The name of the column bound. If nothing else is specified, the column meta data from the containing update form sets the field's attributes.

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.

Declaration of type vspx_radio_group

    create type vspx_radio_group under vspx_field
    temporary self as ref
    constructor method vspx_radio_group (name varchar, parent vspx_control),
    method vc_choose_selected () returns any,
    overriding method vc_xrender () returns any,
    overriding method vc_set_model () returns any

Examples
Groups of radio buttons.

<?xml version="1.0"?> <!-- - - $Id: radio_group__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 a groups of radio buttons, grouped with radio-group control.

    <v:page name="radio_group_demo" xmlns:v="http://www.openlinksw.com/vspx/">
    <html>
    <body>
      <v:form name="sf" type="simple" method="POST">
         <v:radio-group name="radio00">
           <v:radio-button name="radiob01" value="--'one'" />
           <v:radio-button name="radiob02" value="--'two'" />
         </v:radio-group>
      </v:form>
    </body>
    </html>
    </v:page>

See Also: Reference Material in the Tutorial:

VX-S-2

VX-S-3