We want to pass a variable from a backing bean in request scope of one page as query string parameter to other backing bean in view scope of the next page.
I tried to use @ManagedParam, but this signature is not found.
Is there any way to do this?
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1 Answer
You probably meant to use @ManagedProperty. This isn't useable on a view scoped bean to set a request parameter, because the view scope is of a broader scope than the request scope.
The canonical JSF2 way of passing request parameters and invoking actions on them would be something like the following:
view.xhtml view:
<h:link value="Edit" outcome="edit">
<f:param name="id" value="#{item.id}" />
</h:link>
edit.xhtml view:
<f:metadata>
<f:viewParam name="id" value="#{edit.id}" />
<!-- You would normally also convert/validate it here. -->
<f:event type="preRenderView" listener="#{edit.init}" />
</f:metadata>
Edit backing bean:
@ManagedBean
@ViewScoped
public class Edit {
private Long id;
public void init() {
// This method will be invoked after the view parameter is set.
}
// ...
}
See also:
4 Comments
user684434
How to do the same from a h:commandLink ,from the action method in the first page's backing bean
BalusC
That fires by default a POST request without a query string. You would need to send a redirect as outcome. E.g.
return "/edit.xhtml?id=" + item.getId() + "&faces-redirect=true"; I only don't see how that makes sense while having your initial question in mind. What exactly is the functional requirement?user684434
Thanks for the reply....I have one requirement ,it can be a h:link so we can f:viewparam , in the second we have to call action method so used the h:commandlink , then we need to redirect to the common page with different values for the query String....
BalusC
Ah OK. In the future please ask a new question for that instead of posting it as a comment on an existing but unrelated question.