Lift evolved: New in 2.4 and the road ahead

Lift presentation at Scala Days 2012 (18/04/2012 @ London)

Transcript

1. Indrajit Raychaudhuri @indrajitr
2. Full stack Scala Web application Framework
3. Full stack Scala Web application Framework Secure Scalable Designer friendly Interactive
4. Lift: The Scala Companion
5. Retaining NodeSeq helps in secure type-safe transformation Page generation is functional and type-safe Simple transformation as NodeSeq => NodeSeq And not, say, just () => String Lift: The Scala Companion
6. But dive deeper and deal with HTTP and HTML Higher Level Abstraction Page compositions UI behaviors Helpers Lift: The Scala Companion
7. Simple ≠ Easy after all, ‘tis about correctness Steeper Learning Curve (compared to MVC based frameworks) But you cruise once you hit the plateau Lift: The Scala Companion
8. Lift: The Core Tenets
9. Grab the readily available ones, or build your own Lift: The Core Tenets Lift's Abstraction are generalized With sane readily usable defaults
10. Lift: The Core Tenets Lift's Responses are XSS Safe ".name *" #> "<script>alert('hi');</script>"
11. Lift: The Core Tenets Elegant Comet support Requests multiplexed through single request Requests are versioned Auto-detects containers for best fit
12. Lift: The Core Tenets Secure and maintainable REST support object MyRestHelper extends RestHelper { serve { case "api" :: "user" :: AsLong(id) :: _ XmlGet _ => <b>ID:{id}</b> case "api" :: "user" :: AsLong(id) :: _ JsonGet _ => JInt(id) case "api" :: "user" :: AsLong(id) :: _ XmlGet _ => RestContinuation.async { reply => for { i <- lengthyCompute(id) } reply(<x>{i}</x>) } }
13. Lift: The Core Tenets Secure and maintainable REST support // Stateful LiftRules.dispatch.append(MyRestHandler) // Stateless (choose one!) LiftRules.statelessDispatch.append(MyRestHandler)
14. Lift: The Core Tenets Designer friendly Templates <!DOCTYPE html> <html> <head><title>Home</title></head> <body> <div class="lift:surround?with=default;at=content"> <h2>Welcome to Awesome website!</h2> <div class="lift:helloWorld.howdy"> Current time: <span id="time">Time goes here</span> </div> </div> </body> </html>
15. Lift: The Core Tenets Designer friendly Templates class HelloWorld { def howdy = "#time" #> Helpers.formattedTimeNow }
16. Lift: Evolved in 2.4
17. Lift: Evolved in 2.4 CSS Selector Transforms got better syntax <span><span id="event"/></span> "#event" #> "Scaladays 2012" <span>Scala Days 2012</span>
18. Lift: Evolved in 2.4 CSS Selector Transforms got better syntax <span><span id="event"/></span> "#event *" #> "Scala Days 2012" <span><span id="event">Scala Days 2012</span></span>
19. Lift: Evolved in 2.4 CSS Selector Transforms got better syntax <a href="#" id="event">Scala Days 2012</a> "#event [href]" #> "http://days2012.scala-lang.org" <a href="http://days2012.scala-lang.org" id="event">Scala Days 2012</a>
20. Lift: Evolved in 2.4 CSS Selector Transforms got better syntax <span class="cool" id="event">Scala Days 2012</span> "#event [class+]" #> "fancy" <span class="cool fancy" id="event">Scala Days 2012</span>
21. Lift: Evolved in 2.4 CSS Selector Transforms got better syntax <span><span id="event"/></span> "#event" #> List("Scala ", "Days ", "2012") <span>Scala Days 2012</span>
22. Lift: Evolved in 2.4 CSS Selector Transforms got better syntax <table><tr class="r"><td class="c">???</td></tr></table> ".r *" #> (".c *" #> "Scala") <table><tr class="r"><td class="c">Scala</td></tr></table>
23. Lift: Evolved in 2.4 Exclusive XHTML to HTML5 preferred
24. Lift: Evolved in 2.4 Stateless or Stateful – you decide trait StatelessBehavior { def statelessDispatch: PartialFunction[String, NodeSeq => NodeSeq] }
25. Lift: Evolved in 2.4 Better Mock support, ability to test better
26. Lift: Evolved in 2.4 Utilities and Helper updates JSON Serializer improvements Mailer improvements BsonDSL additions to JsonDSL Build system on SBT
27. Lift: The Upcoming
28. Lift: The Upcoming Refinements Netty support giter8, lifty templates Explore Scala 2.10 support Likely have to drop 2.8 support
29. Lift: The Upcoming Moar Refinements Modules’ owned and supported by community Comply with upstream libraries Long deprecation for bolted-in JS libraries H5BP, Bootstrap support
30. Lift: Resource Code: https://github.com/lift Wiki: http://assembla.com/spaces/liftweb/wiki Cookbook: http://cookbook.liftweb.net Books: http://simply.liftweb.net http://www.manning.com/perrett
31. Thank you!