Use Scalate in a new Play 2.0 project

play20-with-scalate.patch

From 5942a6b9041cce90c326664f206592782157353f Mon Sep 17 00:00:00 2001
From: Ben Godfrey <bpgodfrey@gmail.com>
Date: Mon, 1 Oct 2012 17:18:31 +0100
Subject: [PATCH] Use Scalate to render templates

---
 app/controllers/Application.scala |  4 +--
 app/lib/ScalateIntegration.scala  | 53 +++++++++++++++++++++++++++++++++++++++
 app/views/index.jade              |  3 +++
 app/views/index.scala.html        |  7 ------
 app/views/layouts/default.jade    |  9 +++++++
 app/views/main.scala.html         | 15 -----------
 conf/application.conf             |  2 ++
 project/Build.scala               |  1 +
 8 files changed, 70 insertions(+), 24 deletions(-)
 create mode 100644 app/lib/ScalateIntegration.scala
 create mode 100644 app/views/index.jade
 delete mode 100644 app/views/index.scala.html
 create mode 100644 app/views/layouts/default.jade
 delete mode 100644 app/views/main.scala.html

diff --git a/app/controllers/Application.scala b/app/controllers/Application.scala
index acafe6a..096753c 100644
--- a/app/controllers/Application.scala
+++ b/app/controllers/Application.scala
@@ -6,7 +6,7 @@ import play.api.mvc._
 object Application extends Controller {
   
   def index = Action {
-    Ok(views.html.index("Your new application is ready."))
+    Ok(Scalate("index.jade").render('title -> "Hello world!"))
   }
   
-}
\ No newline at end of file
+}
diff --git a/app/lib/ScalateIntegration.scala b/app/lib/ScalateIntegration.scala
new file mode 100644
index 0000000..f7d71f3
--- /dev/null
+++ b/app/lib/ScalateIntegration.scala
@@ -0,0 +1,53 @@
+package controllers
+
+import play.api._
+import http.{Writeable, ContentTypeOf, ContentTypes}
+import mvc.Codec
+import play.api.Play.current
+import org.fusesource.scalate.layout.DefaultLayoutStrategy
+
+object Scalate {
+
+  import org.fusesource.scalate._
+  import org.fusesource.scalate.util._
+
+  var format = Play.configuration.getString("scalate.format") match {
+    case Some(configuredFormat) => configuredFormat
+    case _ => "scaml"
+  }
+
+  lazy val scalateEngine = {
+    val engine = new TemplateEngine
+    engine.resourceLoader = new FileResourceLoader(Some(Play.getFile("app/views")))
+    engine.layoutStrategy = new DefaultLayoutStrategy(engine, "app/views/layouts/default." + format)
+    engine.classpath = "tmp/classes"
+    engine.workingDirectory = Play.getFile("tmp")
+    engine.combinedClassPath = true
+    engine.classLoader = Play.classloader
+    engine
+  }
+
+  def apply(template: String) = Template(template)
+
+  case class Template(name: String) {
+
+    def render(args: (Symbol, Any)*) = {
+      ScalateContent{
+        scalateEngine.layout(name, args.map {
+          case (k, v) => k.name -> v
+        } toMap)
+      }
+    }
+
+  }
+
+  case class ScalateContent(val cont: String)
+
+  implicit def writeableOf_ScalateContent(implicit codec: Codec): Writeable[ScalateContent] = {
+    Writeable[ScalateContent](scalate => codec.encode(scalate.cont))
+  }
+
+  implicit def contentTypeOf_ScalateContent(implicit codec: Codec): ContentTypeOf[ScalateContent] = {
+    ContentTypeOf[ScalateContent](Some(ContentTypes.HTML))
+  }
+}
\ No newline at end of file
diff --git a/app/views/index.jade b/app/views/index.jade
new file mode 100644
index 0000000..949249f
--- /dev/null
+++ b/app/views/index.jade
@@ -0,0 +1,3 @@
+-@ var title: String = "Page"
+
+h1= title
diff --git a/app/views/index.scala.html b/app/views/index.scala.html
deleted file mode 100644
index 9f460d3..0000000
--- a/app/views/index.scala.html
+++ /dev/null
@@ -1,7 +0,0 @@
-@(message: String)
-
-@main("Welcome to Play 2.0") {
-    
-    @play20.welcome(message)
-    
-}
\ No newline at end of file
diff --git a/app/views/layouts/default.jade b/app/views/layouts/default.jade
new file mode 100644
index 0000000..e7bd066
--- /dev/null
+++ b/app/views/layouts/default.jade
@@ -0,0 +1,9 @@
+-@ var body: String
+-@ var title: String = "Page"
+
+!!!5
+html
+  head
+    title= title
+  body
+    != body
diff --git a/app/views/main.scala.html b/app/views/main.scala.html
deleted file mode 100644
index d17217f..0000000
--- a/app/views/main.scala.html
+++ /dev/null
@@ -1,15 +0,0 @@
-@(title: String)(content: Html)
-
-<!DOCTYPE html>
-
-<html>
-    <head>
-        <title>@title</title>
-        <link rel="stylesheet" media="screen" href="@routes.Assets.at("stylesheets/main.css")">
-        <link rel="shortcut icon" type="image/png" href="@routes.Assets.at("images/favicon.png")">
-        <script src="@routes.Assets.at("javascripts/jquery-1.7.1.min.js")" type="text/javascript"></script>
-    </head>
-    <body>
-        @content
-    </body>
-</html>
diff --git a/conf/application.conf b/conf/application.conf
index b4141c6..ebd3f2a 100644
--- a/conf/application.conf
+++ b/conf/application.conf
@@ -45,3 +45,5 @@ logger.play=INFO
 # Logger provided to your application:
 logger.application=DEBUG
 
+# Default Scalate template format (mustache, scaml, jade, ssp)
+scalate.format=jade
diff --git a/project/Build.scala b/project/Build.scala
index 5f537af..a35af9d 100644
--- a/project/Build.scala
+++ b/project/Build.scala
@@ -9,6 +9,7 @@ object ApplicationBuild extends Build {
 
     val appDependencies = Seq(
       // Add your project dependencies here,
+      "org.fusesource.scalate" % "scalate-core" % "1.5.3"
     )
 
     val main = PlayProject(appName, appVersion, appDependencies, mainLang = SCALA).settings(
-- 
1.7.12.1