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RichFaces Partial View Updates

by Online Tutorials Library

Partial view updates

We can use the render attribute to specify which components to render for an Ajax update. The render attribute can point to an id identifier of a specific component to update. Components can also be identified through the use of Expression Language (EL).

The render attribute accepts the following keywords:

@allIt is used to update every component.
@noneIt is used for no components are updated.
@thisIt is used for requesting component with the execute attribute is updated.
@formIt is used to update the form that contains the requested component.
@regionThe region that contains the requesting component is updated. Use the <a4j:region> component as a wrapper element to specify regions.

We should use the <a4j:outputPanel> component by setting ajaxRendered=”true”.

The <rich:message> and <rich:messages> components are based on the <a4j:outputPanel> component and as such will also always be updated. To override this behavior, use the limitRender=”true” setting on the requesting component.

// index.xhtml

// User.java


RichFaces Partial view updates 1

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