A local variable that can be used as a replacement for a specified expression within the body of the component. Use <apex:variable> to reduce repetitive and verbose expressions within a page.
Note: <apex:variable> does not support reassignment inside of an iteration component, such as <apex:dataTable> or <apex:repeat>. The result of doing so, e.g., incrementing the <apex:variable> as a counter, is unsupported and undefined.
<!-- For this example to render properly, you must associate the Visualforce page with a valid contact record in the URL. For example, if 001D000000IRt53 is the contact ID, the resulting URL should be: https://Salesforce_instance/apex/myPage?id=001D000000IRt53 See the Visualforce Developer's Guide Quick Start Tutorial for more information. --> <!-- Page: --> <apex:page controller="variableCon"> <apex:variable var="c" value="{!contact}" /> <p>Greetings, {!c.LastName}.</p> </apex:page> /*** Controller ***/ public class variableCon { Contact contact; public Contact getContact() { if (contact == null){ contact = [select LastName from Contact where id = :ApexPages.currentPage().getParameters().get('id')]; } return contact; } }
Attribute Name | Attribute Type | Description | Required? | API Version | Access |
---|---|---|---|---|---|
id | String | An identifier that allows the component to be referenced by other components in the page. | 10.0 | global | |
rendered | Boolean | A Boolean value that specifies whether the component is rendered on the page. If not specified, this value defaults to true. | 10.0 | global | |
value | Object | The expression that can be represented by the variable within the body of the variable component. | Yes | 10.0 | global |
var | String | The name of the variable that can be used to represent the value expression within the body of the variable component. | Yes | 10.0 | global |