On Thu, Dec 24, 2009 at 6:14 PM, Xuefeng Wu <ben...@gmail.com> wrote:
> It's helpful, thank you!
>
>
> On Thu, Dec 24, 2009 at 7:03 PM, Marius <marius.dan...@gmail.com> 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>))
>> }
>>
>
I think the signature for an Ajax request would be:
val AjaxRequestPrefix = LiftRule.ajaxPath
case (mode, Req(AjaxRequestPrefix :: _, _, PostRequest), ex) => ...
>
>> 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 <ben...@gmail.com> 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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