Apache Struts 2 Documentation > Home > Guides > Tag Developers Guide > Struts Tags > Tag Reference > UI Tag Reference > select
Added by digi9ten, last edited by Don Brown on Jan 06, 2007  (view change)
Please make sure you have read the Tag Syntax document and understand how tag attribute syntax works.

Description

Render an HTML input tag of type select.

Parameters

Name

Required

Default

Evaluated

Type

Description

accesskey false true String Set the html accesskey attribute on rendered html element
cssClass false true String The css class to use for element
cssStyle false true String The css style definitions for element ro use
disabled false true String Set the html disabled attribute on rendered html element
emptyOption false false true Boolean Whether or not to add an empty (--) option after the header option
headerKey false true String Key for first item in list. Must not be empty! '-1' and '' is correct, '' is bad.
headerValue false true String Value expression for first item in list
id false true String id for referencing element. For UI and form tags it will be used as HTML id attribute
key false true String Set the key (name, value, label) for this particular component
label false true String Label expression used for rendering a element specific label
labelposition false true String Define label position of form element (top/left)
list true true 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.
listKey false true String Property of list objects to get field value from
listValue false true String Property of list objects to get field content from
multiple false false true Boolean Creates a multiple select. The tag will pre-select multiple values if the values are passed as an Array (of appropriate types) via the value attribute. Passing a Collection may work too? Haven't tested this.
name false true String The name to set for element
onblur false true String Set the html onblur attribute on rendered html element
onchange false true String Set the html onchange attribute on rendered html element
onclick false true String Set the html onclick attribute on rendered html element
ondblclick false true String Set the html ondblclick attribute on rendered html element
onfocus false true String Set the html onfocus attribute on rendered html element
onkeydown false true String Set the html onkeydown attribute on rendered html element
onkeypress false true String Set the html onkeypress attribute on rendered html element
onkeyup false true String Set the html onkeyup attribute on rendered html element
onmousedown false true String Set the html onmousedown attribute on rendered html element
onmousemove false true String Set the html onmousemove attribute on rendered html element
onmouseout false true String Set the html onmouseout attribute on rendered html element
onmouseover false true String Set the html onmouseover attribute on rendered html element
onmouseup false true String Set the html onmouseup attribute on rendered html element
onselect false true String Set the html onselect attribute on rendered html element
required false false true Boolean If set to true, the rendered element will indicate that input is required
requiredposition false true String Define required position of required form element (left|right)
size false true Integer Size of the element box (# of elements to show)
tabindex false true String Set the html tabindex attribute on rendered html element
template false true String The template (other than default) to use for rendering the element
templateDir false true String The template directory.
theme false true String The theme (other than default) to use for rendering the element
title false true String Set the html title attribute on rendered html element
tooltip false true String Set the tooltip of this particular component
tooltipConfig false true String Set the tooltip configuration
value false true String Preset the value of input element.

Examples

Note: For any of the tags that use lists (select probably being the most ubiquitous), which uses the OGNL list
notation (see the "months" example above), it should be noted that the map key created (in the months example,
the '01', '02', etc.) is typed. '1' is a char, '01' is a String, "1" is a String. This is important since if
the value returned by your "value" attribute is NOT the same type as the key in the "list" attribute, they
WILL NOT MATCH, even though their String values may be equivalent. If they don't match, nothing in your list
will be auto-selected.<p/>
<s:select label="Pets"
       name="petIds"
       list="petDao.pets"
       listKey="id"
       listValue="name"
       multiple="true"
       size="3"
       required="true"
/>

<s:select label="Months"
       name="months"
       headerKey="-1" headerValue="Select Month"
       list="#{'01':'Jan', '02':'Feb', [...]}"
       value="selectedMonth"
       required="true"
/>

// The month id (01, 02, ...) returned by the getSelectedMonth() call
// against the stack will be auto-selected