No Wicket redirects to the same instance on a submit. All interface
methods will allways go back to the same page instance. Only when you
call a bookmarkeable page or e.g. create one yourself, a new instance
will be created. And on a cluster, your page will be replicated so it
has the same state.
Eelco
Gili wrote:
But if I set the visible property to true only once a user clicks
submit, isn't it too late? I mean, my Page constructor is the one
adding all the components into itself. When the user hits Submit,
doesn't Wicket redirect him back to the same Page but with a new
instance? I'm very confused on the lifetime of Page objects. If I
can't depend on the Page object being reused (because of clusters,
etc) and I have to assume a new Page instance will be created once the
user hits Submit then when I change visible to true, won't it get lost
because the new Page will create brand new instances of the
components...?
Gili
Eelco Hillenius wrote:
You can do that easier I think. Just have your redirect header in
there all the time, but have the visible property false. In your
submit handler, you set the visible property true, and the redirect
will happen. If you want to be sure the flag is only set false when
you are in your submit routine, one of the things you could do is
override the page's onBeginRequest and set the visible flag to false
each time.
If you want to do it your way (isRedirectRequested), set that
property in your submit handler, and it will stay the same as long as
that instance lives. A new instance will start fresh offcourse.
Eelco
Eelco
Gili wrote:
When a user enters a valid email address I want the form to
refresh, output "<address> has been subscribed" in the feedback
panel and five seconds later redirect the client to another Page.
The question though is how does one retain state across Page
refreshes? I mean, when the user first enters the email and clicks
SUBMIT, I want to set a flag isRedirectRequested to true such that
the next time that same page renders, it knows output an extra line
of HTML to redirect the client after five seconds. How does one
retain Page state like I mentioned?
Thanks,
Gili
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