Simple way to add comet using AJAX in Lift-3

[Andreas Joseph Krogh]

I cooked up this:

 

    case class RegisterComet[T <: LiftCometActor](id: String, name: String, kids: NodeSeq)(implicit cometManifest: Manifest[T]) extends JsCmd {
        val castClass = cometManifest.runtimeClass.asInstanceOf[Class[T]]
        override val toJsCmd = {
            val cometMarkup = S.findOrCreateComet[T](Full(name), kids, Map.empty, receiveUpdatesOnPage = true).map{comet=>
                S.addComet(comet)
                Comet.containerForCometActor(comet)
            }.getOrElse(<div>Could not find or create comet for type {castClass.getSimpleName} with name {name}</div>)
            Replace(id, cometMarkup).toJsCmd
        }
    }

 

 

Should we provide something similar out of the box in Lift-3?

 

--

Andreas Joseph Krogh

CTO / Partner - Visena AS

Mobile: +47 909 56 963

and...@visena.com

www.visena.com

[Antonio Salazar Cardozo]

Looks really sweet, would definitely love to see a pull request with this! Probably could use a little tweaking on the

class name and some of the variable names, but I can easily see it being a common use case. Fiery Comets focused

on supporting sending comets down that don't have associated markup—something we didn't support at all before—and

this is in a sense the missing piece to make the AJAX comet story complete.

Itt's worth mentioning that you shouldn't have to S.addComet if you set receiveUpdatesOnPage as true. May be worth

clarifying the Scaladocs a little around that.

Antonio