Thanks for the reply, Marius.

I just saw your reply and am not sure I fully grasp how this is safe.
What if request A comes in and sets com.bryan.myproject.locationQuery
and starts working on processing the rest of the request.  In the
meantime, request B comes in and sets
com.bryan.myproject.locationQuery.  Now request A finishes processing
the request, upon which it has to read in
com.bryan.myproject.locationQuery.  Wouldn't request A now be reading
in com.bryan.myproject.locationQuery set by request B?

Or have I mistaken how objects work and how requests are handled in
lift?

Thanks,
Bryan

On May 4, 2:24 am, "marius d." <marius.dan...@gmail.com> wrote:
> Not at all. They are safe.
>
> On May 3, 9:49 pm, "Bryan." <germ...@gmail.com> wrote:
>
> > Would that mean that the state of the RequestVar could accidentally be
> > shared with multiple requests?
>
> > On May 3, 1:51 pm, "marius d." <marius.dan...@gmail.com> wrote:
>
> > > Hmmm ... the code seems to be fine (as far as I can tell from the code
> > > snippet)
>
> > > Can you perhaps declare your RequestVars outside of Cars scope?
>
> > > just
>
> > > object locationQuery extends RequestVar[Box[LocationQuery]](Empty)
>
> > > class Cars {
> > >   ...
>
> > > }
>
> > > .. personally I would avoid using open_! unless I'm really sure that
> > > the Box is not Empty.
>
> > > Br's,
> > > Marius
>
> > > On May 3, 7:08 pm, "Bryan." <germ...@gmail.com> wrote:
>
> > > > I believe I am doing #1 now with no luck.  Let me know if this is
> > > > correct:
>
> > > > class Cars {
> > > >   // ...
> > > >   object locationQuery extends RequestVar[Box[LocationQuery]](Empty)
>
> > > >   def search(xhtml: NodeSeq): NodeSeq = {
> > > >     def processSearch() = {
> > > >       // ...
> > > >       val lq = new LocationQuery(validPickupDate.open_!,
> > > > validDropoffDate.open_!, city, city)
> > > >       S.redirectTo("/select", () => { locationQuery(Full(lq));
> > > > requestReference(Full(requestRef)) })
> > > >     }
>
> > > >     // binds are here
> > > >   }
>
> > > >   def selectedLocation(xhtml: NodeSeq): NodeSeq = {
> > > >     if (locationQuery.isDefined) {
> > > >       val selectedCity = locationQuery.open_!.pickupLocation
> > > >       Text(selectedCity.name + ", " + selectedCity.region)
> > > >     } else {
> > > >       Text("")
> > > >     }
> > > >   }
>
> > > >   // ...
>
> > > > }
>
> > > > Thanks,
> > > > Bryan
>
> > > > On May 3, 11:46 am, "marius d." <marius.dan...@gmail.com> wrote:
>
> > > > > Oh.. 1 & 2 are unrelated ... just slightly different approaches.
>
> > > > > On May 3, 6:45 pm, "marius d." <marius.dan...@gmail.com> wrote:
>
> > > > > > Well instead of open_1 use openOr so that you wont get exceptions 
> > > > > > when
> > > > > > the Box is Empty. Also if you want when you to the redirect you 
> > > > > > could
> > > > > > propagate those RequestsVars as well so that your browser re-send
> > > > > > them. Now sure if this is what you'd want but should help avoiding
> > > > > > Empty request vars. But what I'd do is:
>
> > > > > > 1. Since you are doing redirect with state in the function passed to
> > > > > > S.redirectTo you can set relevant values to your RequestVar's .. 
> > > > > > hence
> > > > > > when your page is rendered your request vars have the old values
> > > > > > potentially.
> > > > > > 2. Use a StatefulSnippet and call redirectTo from the 
> > > > > > StatefulSnippet
> > > > > > not S. Hence you can save state inside your snippet and when 
> > > > > > redirect
> > > > > > happens, the same snippet instance would be used.
>
> > > > > > Br's,
> > > > > > Marius
>
> > > > > > On May 3, 6:08 pm, Bryan <germ...@gmail.com> wrote:
>
> > > > > > > I have a snippet that calls S.redirectTo with state.  In this same
> > > > > > > snippet class I have a few functions to show the values of the
> > > > > > > processed RequestVar's.  This works fine until I refresh the page,
> > > > > > > because in these functions I call .open_! on some now Empty
> > > > > > > RequestVar's.  It is simple enough to show Text("") when the box 
> > > > > > > is
> > > > > > > not Full, but now I have a problem with the page not showing 
> > > > > > > useful
> > > > > > > data.
>
> > > > > > > What are some suggestions for handling this?  Should I just add 
> > > > > > > code
> > > > > > > to each of my many snippet functions to redirect to "/" when the
> > > > > > > RequestVar's are empty?
>
> > > > > > > Thanks,
> > > > > > > Bryan

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