[seam-issues] [JBoss JIRA] Commented: (SEAMFACES-103) Create an api for doing a redirect to another view

[Brian Leathem (JIRA)]

    [ https://issues.jboss.org/browse/SEAMFACES-103?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12591037#comment-12591037 ] 

Brian Leathem commented on SEAMFACES-103:
-----------------------------------------

In case the linked to page disappears:

JSF 2 Internals - Efficient way of Redirecting to a Page
There are certain cases where you are needed to redirect  to a different page than requested by user e.g. if user has requested a secure page for which he/she is not authorized, your application will have to redirect to login page or some other page. I have created a utility method to redirect to a page. You can call anywhere but for example given above, you can call it a beforePhase method of RestoreViewPhaseListener. Here is the method code:

public static void redirect(String viewId) {

execute(FacesContext.getCurrentInstance(), viewId);
}


private static void execute(FacesContext facesContext, String viewId)
throws FacesException {

UIViewRoot viewRoot = null;
ViewDeclarationLanguage vdl = facesContext.getApplication()
.getViewHandler()
.getViewDeclarationLanguage(facesContext, viewId);

if (vdl != null) {
// If we have one, get the ViewMetadata...
ViewMetadata metadata = vdl.getViewMetadata(facesContext,
viewId);

if (metadata != null) { // perhaps it's not supported
// and use it to create the ViewRoot. This will have, at
// most
// the UIViewRoot and its metadata facet.
viewRoot = metadata.createMetadataView(facesContext);

}
}

facesContext.setViewRoot(viewRoot);
facesContext.renderResponse();
assert (null != viewRoot);

}

> Create an api for doing a redirect to another view
> --------------------------------------------------
>
>                 Key: SEAMFACES-103
>                 URL: https://issues.jboss.org/browse/SEAMFACES-103
>             Project: Seam Faces
>          Issue Type: Feature Request
>            Reporter: Brian Leathem
>             Fix For: 3.1
>
>
> See: http://www.dzone.com/links/r/efficient_way_to_redirect_to_a_page_in_jsf_2.html
> <mojavelinux> surely it must be simpler than that with the JSF 2 API, but atm I can't remember whether we included a simpler api
> <mojavelinux> he's doing specifically an internal forward
> <mojavelinux> but obviously having one that does a regular redirect would be ideal too
> <mojavelinux> btw, this would be from an arbitrary point in an action or action listener
> <mojavelinux> as opposed to using navigation rules

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