It's helpful, thank you!

On Thu, Dec 24, 2009 at 7:03 PM, Marius <[email protected]> wrote:

> If you want a popup a dialog when an exception is thrown from an Ajax
> function you can do something like:
>
> import net.liftweb.http.js._
> import net.liftweb.http.js.jquery._
> import JqJsCmds._
> ...
>
> LiftRules.exceptionHandler.prepend {
>      case (mode, req, ex) => JavaScriptResponse(ModalDialog(<p>Crap
> it failed.</p>))
> }
>
> You can make you own logic to distinguish between exceptions thrown
> from Ajax requests or from snippet, either by some information from
> Req or some additional information from the exception itself or by
> some other means.
>
> Br's,
> Marius
>
> On Dec 24, 11:15 am, Xuefeng Wu <[email protected]> wrote:
> > Hi,
> > I have a question about exception handle in Lift.
> >
> > *How could I pop a error dialog except redirect?*
> > *
> > *
> > *Lift have LiftRules.exceptionHandler.prepend to handle exception.*
> > LiftRules.exceptionHandler.prepend {
> >       case (mode, state, ex) => RedirectResponse("/error")
> >       // how could I pop a error dialog?
> >  }
> >
> > And I found that Lift could handle exception from snippet , for example:
> >   def throwExceptionB(in: NodeSeq): NodeSeq = {
> >     throw new RuntimeException("throw exception")
> >     a(() => {Alert("Text throw exception")},
> >              Text("throw exception")
> >     )
> >   }
> >
> > But I find lift didn't throw exception if it rise from lift inside:
> >    def throwExceptionB(in: NodeSeq): NodeSeq = {
> >     a(() => {throw new RuntimeException("throw exception");Alert("Test
> throw
> > exception")},
> >              Text("throw exception")
> >     )
> >    }
> > The exception will be printed at server side but not the client.
> > I think Lift should also could handle it.
> >
> > --
> > Scala中文社区:  http://groups.google.com/group/scalacn
>
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>


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