Downloaded 61 times
![SNIPPETS UND BINDING
class Games {
def upcoming5(xhtml: NodeSeq) =
bind("games", xhtml, "list" -> bindGames(Game upcoming 5, xhtml))
private def bindGames(games: List[Game], xhtml: NodeSeq) = {
val oddOrEven = OddOrEven()
games flatMap { game =>
bind("game", chooseTemplate("games", "list", xhtml),
"date" -> format(game.date.is, locale),
"group" -> game.group.is.toString,
"location" -> game.location.is,
...
Platzhalter ersetzen
15](https://image.slidesharecdn.com/wjax-09-lift-091111021918-phpapp01/85/W-JAX-09-Lift-15-320.jpg)
![MAPPER
class Game extends LongKeyedMapper[Game] with IdPK {
object group extends MappedEnum(this, Group) {
override def displayName = ?("Group")
}
object team1 extends MappedTeam(this, "Team 1")
object team2 extends MappedTeam(this, "Team 2")
object date extends MappedDateTime(this) {
override def displayName = ?("Date")
}
object location extends MappedString(this, 100) {
override def displayName = ?("Location")
}
... Keep the meaning
with the bytes
23](https://image.slidesharecdn.com/wjax-09-lift-091111021918-phpapp01/85/W-JAX-09-Lift-23-320.jpg)
![CRUD SUPPORT
... with CRUDify[Long, Game]
24](https://image.slidesharecdn.com/wjax-09-lift-091111021918-phpapp01/85/W-JAX-09-Lift-24-320.jpg)
![MORE THAN JUST CRUD
class User extends MegaProtoUser[User] {
override def shortName = {
val s = super.shortName
val i = s indexOf "@"
if (i == -1) s else s.substring(0, i)
}
override def firstNameDisplayName = ?("Name")
object points extends MappedInt(this)
}
29](https://image.slidesharecdn.com/wjax-09-lift-091111021918-phpapp01/85/W-JAX-09-Lift-29-320.jpg)
Uploaded byHeiko Seeberger
W-JAX 09 - Lift
This document discusses the Lift web framework for Scala. It begins by highlighting how Lift offers innovative approaches to web development compared to other frameworks. It then discusses why another web framework was needed and how Lift borrows ideas from other frameworks while also introducing its own novel concepts. Several key features of Lift are then summarized, including templates, sitemaps, Comet, persistence, AJAX support, and user management. Code examples are provided to demonstrate templates, snippets, binding, menus, CRUD functionality, and AJAX calls.
W-JAX 09 - Lift
- 1. Das Web-Framework fürScala Heiko Seeberger Copyright WeigleWilczek 2009
- 2. WARUM SIND WIREIGENTLICH HIER? “Lift is the only new framework in the last four years to offer fresh and innovative approaches to web development. It's not just some incremental improvements over the status quo, it redefines the state of the art. If you are a web developer, you should learn Lift ...” Michael Galpin, Developer, eBay 2
- 3. WARUM NOCH EINWEB-FRAMEWORK? Lift pickt Rosinen von anderen Frameworks Lift bringt eigene innovative Ansätze 3
- 4. DEMO: CHAT MIT20 ZEILEN SCALA CODE 4
- 5. FÜR’S PROTOKOLL • Projekt generieren mit mvn archetype:generate ... • ChatServer.scala anlegen • Chat.scala anlegen • chat.xhtml Template anlegen • In Boot.scala neues Menu zur SiteMap hinzufügen 5
- 6. DIE ANFÄNGE David Pollak Einfach zu benutzen Scala with Sails Sicher 2006 Keep the meaning with the bytes Einfach zu deployen 6
- 7. HEUTE Lift 1.1 vorder Tür Sehr rege Community Etliche Sites powered by Lift 32 Committer 7
- 8. FEATURES IM ANGEBOT Templates Sitemap Comet Persistenz AJAX User Management 8
- 9.
- 10. WEITERE FEATURES (UNVOLLSTÄNDIG) Wizards JPA und JTA OpenID JSON AMPQ OSGi Textile PayPay 10
- 11. TEMPLATES 11
- 12. WIE SCHREIBEN WIRTEMPLATES? <html> <head> In XHTML <title>kix</title> ... <body> <div class="container"> ... <div class="span-18 last"> <lift:Msgs showAll="true"/> mit Lift-Tags <lift:bind name="content"/> ... </div> <div class="span-12" style="text-align: center;"> <img src="/images/pbww.png"/> </div> ... 12
- 13. TEMPLATES VERSCHACHTELN <lift:bind ... /> <lift:surround ...> 13
- 14. SNIPPETS EINBINDEN class Games { Snippet def upcoming5(xhtml: NodeSeq) = bind("games", xhtml, "list" -> bindGames(Game upcoming 5, xhtml)) <lift:surround with="default" at="content"> ... <lift:Games.upcoming5> Snippet-Tag <games:list> <tr game:class=""> <td><span game:id=""><game:action/></span></td> <td><game:date/></td> <td><game:group/></td> Platzhalter im <td><game:location/></td> <td><game:teams/></td> Namespace game ... 14
- 15. SNIPPETS UND BINDING classGames { def upcoming5(xhtml: NodeSeq) = bind("games", xhtml, "list" -> bindGames(Game upcoming 5, xhtml)) private def bindGames(games: List[Game], xhtml: NodeSeq) = { val oddOrEven = OddOrEven() games flatMap { game => bind("game", chooseTemplate("games", "list", xhtml), "date" -> format(game.date.is, locale), "group" -> game.group.is.toString, "location" -> game.location.is, ... Platzhalter ersetzen 15
- 16. LIVE DEMO 16
- 17. SITEMAP 17
- 18.
- 19. SITEMAP ANLEGEN val ifAdmin= If(() => User.superUser_?, () => RedirectResponse("/index")) val homeMenu = Menu(Loc("home", ("index" :: Nil) -> false, "Home")) ... val adminMenu = Menu(Loc("admin", ("admin" :: Nil) -> true, "Admin", ifAdmin), adminSubMenu: _*) val menus = homeMenu :: ... adminMenu :: User.sitemap LiftRules setSiteMap SiteMap(menus : _*) 19
- 20. MENÜS ANZEIGEN <html> <head> <title>kix</title> ... <body> <div class="container"> ... <div class="span-5"> <div class="menu"> <lift:Menu.builder/> </div> ... 20
- 21. LIVE DEMO 21
- 22. PERSISTENZ 22
- 23. MAPPER class Game extendsLongKeyedMapper[Game] with IdPK { object group extends MappedEnum(this, Group) { override def displayName = ?("Group") } object team1 extends MappedTeam(this, "Team 1") object team2 extends MappedTeam(this, "Team 2") object date extends MappedDateTime(this) { override def displayName = ?("Date") } object location extends MappedString(this, 100) { override def displayName = ?("Location") } ... Keep the meaning with the bytes 23
- 24. CRUD SUPPORT ... withCRUDify[Long, Game] 24
- 25. SCHEMA ANLEGEN val dbVendor= new StandardDBVendor(Props get "db.driver" openOr "org.h2.Driver", Props get "db.url" openOr "jdbc:h2:kix", Empty, Empty) { override def maxPoolSize = Props getInt "db.pool.size" openOr 3 } DB.defineConnectionManager(DefaultConnectionIdentifier, dbVendor) Schemifier.schemify(true, Log.infoF _, Team, Game, Result, Tip, User) 25
- 26. LIVE DEMO 26
- 27.
- 28.
- 29. MORE THAN JUSTCRUD class User extends MegaProtoUser[User] { override def shortName = { val s = super.shortName val i = s indexOf "@" if (i == -1) s else s.substring(0, i) } override def firstNameDisplayName = ?("Name") object points extends MappedInt(this) } 29
- 30. LIVE DEMO 30
- 31. AJAX SUPPORT 31
- 32.
- 33. SCALA API FÜRAJAX def editDelete(tip: Tip) = { def delete = { Tip delete_! tip SetHtml(tip.id.is.toString, NodeSeq.Empty) } renderEditDelete(tip, delete _) } private def renderEditDelete(tip: Tip, jsCmd: () => JsCmd) = link("/tips/edit", () => currentTip(Full(tip)), editImg) ++ Text("") ++ ajaxDeleteImg(ajaxInvoke(jsCmd)) 33
- 34. LIVE DEMO 34
- 35.
- 36.
- 37.
- 38. DANKE Kontakt: seeberger@weiglewilczek.com Mehrlernen: www.scalatraining.net 38