A RequestVar is only "live" for the duration of the request, and a
redirectTo ends up sending a 307 temp redirect to the browser, which results
in a new request. S.redirectTo does have an overload that allows you to pass
a function that will be called when the redirected request is handled. Some
skeleton code that uses this would look like:
...
object myVar extends RequestVar[String]("")
def mySnippet (...) ... {
def processSubmit () {
...
val currentMyVar = myVar.is
S.redirectTo("/newPage", () => myVar(currentMyVar))
}
...
}
Notice that we need to introduce a "capture" val to hold the current value
so that the closure function can re-set it when the redirect is processed.
We briefly discuss this in the book, but I'll see about adding a more
concrete example that discusses the approaches to passing state around
between snippets.
Derek
On Sat, Apr 18, 2009 at 3:23 PM, bradford <fingerm...@gmail.com> wrote:
>
> Thanks, Tim. I worked around that issue.
>
> I would still like to know whether or not it's possible have
> RequestVars carry over to the redirected page. I'm attaching a
> modified demo. If I use just a var, it will maintain the state. If I
> use RequestVar, it won't transfer the state.
>
> Well.. I couldn't find the attach button in Google Groups. Here's the
> pasted code: (a modification of the Test.scala file found here:
>
> http://groups.google.com/group/liftweb/browse_thread/thread/db1e4631a2e3ae4d/c839dec82819b7cd
> ).
>
> package com.foo.snippet
>
> import scala.xml.{NodeSeq,Text}
>
> import net.liftweb.http._
> import net.liftweb.util.Helpers
> import S._
> import Helpers._
>
> class TestSnippet extends StatefulSnippet {
> val dispatch : DispatchIt = {
> case "add" => add _
> case "show" => show _
> }
>
> object name extends RequestVar("empty")
>
> def add (xhtml : NodeSeq) : NodeSeq = {
> def doSubmit () = {
> println("Name = " + name)
> this.redirectTo("/show")
> }
>
> bind("form", xhtml,
> "name" -> SHtml.text(name.is, name(_)),
> "submit" -> SHtml.submit("Add", doSubmit))
> }
>
> def show (xhtml : NodeSeq) : NodeSeq = {
> bind("display", xhtml, "name" -> Text(name.is))
> }
> }
>
>
> On Apr 18, 2:18 pm, Timothy Perrett <timo...@getintheloop.eu> wrote:
> > Its talking about Hibernate session, not lift session. Perhaps you have a
> > detached model or something your trying to work on?
> >
> > Cheers, Tim
> >
> > On 18/04/2009 19:08, "bradford" <fingerm...@gmail.com> wrote:
> >
> > > no session or session was
> > > closed
> >
> > > I'll look into this some more.
> >
>
--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the Google Groups
"Lift" group.
To post to this group, send email to liftweb@googlegroups.com
To unsubscribe from this group, send email to
liftweb+unsubscr...@googlegroups.com
For more options, visit this group at
http://groups.google.com/group/liftweb?hl=en
-~----------~----~----~----~------~----~------~--~---
