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# radio

Please make sure you have read the Tag Syntax document and understand how tag attribute syntax works.

> NOTE: that the `listkey` and `listvalue` attribute will default to `key` and `value` respectively only when the `list` attribute is evaluated to a Map or its descendant. Everything else will result in `listkey` and `listvalue` to be null and not used.

## Description

Renders a radio button input field

## Attributes

#### Dynamic Attributes Allowed: true
#### Name | #### Required | #### Default | #### Evaluated | #### Type | #### Description
--- | --- | --- | --- | --- | ---
accesskey | false |  | false | String | Set the html accesskey attribute on rendered html element
cssClass | false |  | false | String | The css class to use for element
cssErrorClass | false |  | false | String | The css error class to use for element
cssErrorStyle | false |  | false | String | The css error style definitions for element to use
cssStyle | false |  | false | String | The css style definitions for element to use
disabled | false |  | false | String | Set the html disabled attribute on rendered html element
errorPosition | false |  | false | String | Define error position of form element (top|bottom)
id | false |  | false | String | HTML id attribute
javascriptTooltip | false | false | false | Boolean | Use JavaScript to generate tooltips
key | false |  | false | String | Set the key (name, value, label) for this particular component
label | false |  | false | String | Label expression used for rendering an element specific label
labelPosition | false |  | false | String | Define label position of form element (top/left)
labelSeparator | false | : | false | String | String that will be appended to the label
list | true |  | false | String | Iterable source to populate from. If the list is a Map (key, value), the Map key will become the option 'value' parameter and the Map value will become the option body.
listCssClass | false |  | false | String | Property of list objects to get css class from
listCssStyle | false |  | false | String | Property of list objects to get css style from
listKey | false |  | false | String | Property of list objects to get field value from
listLabelKey | false |  | false | String | Property of list objects to be used to lookup for localised version of field label
listTitle | false |  | false | String | Property of list objects to get title from
listValue | false |  | false | String | Property of list objects to get field content from
listValueKey | false |  | false | String | Property of list objects to get field value label from
name | false |  | false | String | The name to set for element
onblur | false |  | false | String | Set the html onblur attribute on rendered html element
onchange | false |  | false | String | Set the html onchange attribute on rendered html element
onclick | false |  | false | String | Set the html onclick attribute on rendered html element
ondblclick | false |  | false | String | Set the html ondblclick attribute on rendered html element
onfocus | false |  | false | String | Set the html onfocus attribute on rendered html element
onkeydown | false |  | false | String | Set the html onkeydown attribute on rendered html element
onkeypress | false |  | false | String | Set the html onkeypress attribute on rendered html element
onkeyup | false |  | false | String | Set the html onkeyup attribute on rendered html element
onmousedown | false |  | false | String | Set the html onmousedown attribute on rendered html element
onmousemove | false |  | false | String | Set the html onmousemove attribute on rendered html element
onmouseout | false |  | false | String | Set the html onmouseout attribute on rendered html element
onmouseover | false |  | false | String | Set the html onmouseover attribute on rendered html element
onmouseup | false |  | false | String | Set the html onmouseup attribute on rendered html element
onselect | false |  | false | String | Set the html onselect attribute on rendered html element
performClearTagStateForTagPoolingServers | false | false | false | Boolean | Whether to clear all tag state during doEndTag() processing (if applicable)
requiredLabel | false | false | false | Boolean | If set to true, the rendered element will indicate that input is required
requiredPosition | false |  | false | String | Define required position of required form element (left|right)
style | false |  | false | String | The css style definitions for element to use - it's an alias of cssStyle attribute.
tabindex | false |  | false | String | Set the html tabindex attribute on rendered html element
template | false |  | false | String | The template (other than default) to use for rendering the element
templateDir | false |  | false | String | The template directory.
theme | false |  | false | String | The theme (other than default) to use for rendering the element
title | false |  | false | String | Set the html title attribute on rendered html element
tooltip | false |  | false | String | Set the tooltip of this particular component
tooltipConfig | false |  | false | String | Deprecated. Use individual tooltip configuration attributes instead.
tooltipCssClass | false | StrutsTTClassic | false | String | CSS class applied to JavaScrip tooltips
tooltipDelay | false | Classic | false | String | Delay in milliseconds, before showing JavaScript tooltips
tooltipIconPath | false |  | false | String | Icon path used for image that will have the tooltip
value | false |  | false | String | Preset the value of input element.

## Examples

In this example, a radio control is displayed with a list of genders. The gender list is built from attribute `var=genders`. The framework calls `getGenders()` which will return a Map. For examples using `listKey` and `listValue` attributes, see the section `select` tag. The default selected one will be determined (in this case) by the `getMale()` method in the action class which should return a value similar to the key of the `getGenders()` map if that particular gender is to be selected.

    <s:action name="GenderMap" var="genders"/>
    <s:radio label="Gender" name="male" list="#genders.genders"/>

    <@s.radio name="car" list={"ford": "Ford Motor Co", "toyota": "Toyota"} listKey="key" listValue="value" />