§About SBT Settings

§About sbt settings

The sbt build script defines settings for your project. You can also define your own custom settings for your project, as described in the sbt documentation . In particular, it helps to be familiar with the settings in sbt.

To set a basic setting, use the := operator:

val main = PlayProject(appName, appVersion, appDependencies).settings(
  confDirectory := "myConfFolder"     
)

§Default settings for Java applications

Play defines a default set of settings suitable for Java-based applications. To enable them add the defaultJavaSettings set of settings to your application definition:

val main = PlayProject(appName, appVersion, appDependencies, mainLang = JAVA)

These default settings mostly define the default imports for generated templates. For example, it imports java.lang.*, so types like Long are the Java ones by default instead of the Scala ones. It also imports java.util.* so the default collection library will be the Java one.

§Default settings for Scala applications

Play defines a default set of settings suitable for Scala-based applications. To enable them add the defaultScalaSettings set of settings to your application definition:

val main = PlayProject(appName, appVersion, appDependencies, mainLang = SCALA)

These default settings define the default imports for generated templates (such as internationalized messages, and core APIs).

§Play project settings with their default value

When you define your sbt project using PlayProject instead of Project, you will get a default set of settings. Here is the default configuration:

    resolvers ++= Seq(
      "Typesafe Releases Repository" at "http://repo.typesafe.com/typesafe/releases/",
      "Typesafe Snapshots Repository" at "http://repo.typesafe.com/typesafe/snapshots/"
    ),

    target <<= baseDirectory / "target",

    sourceDirectory in Compile <<= baseDirectory / "app",
    sourceDirectory in Test <<= baseDirectory / "test",

    confDirectory <<= baseDirectory / "conf",

    resourceDirectory in Compile <<= baseDirectory / "conf",

    scalaSource in Compile <<= baseDirectory / "app",
    scalaSource in Test <<= baseDirectory / "test",

    javaSource in Compile <<= baseDirectory / "app",
    javaSource in Test <<= baseDirectory / "test",

    distDirectory <<= baseDirectory / "dist",

    libraryDependencies += "play" %% "play" % play.core.PlayVersion.current,

    libraryDependencies += "play" %% "play-test" % play.core.PlayVersion.current % "test",

    parallelExecution in Test := false,

    testOptions in Test += Tests.Setup { loader =>
      loader.loadClass("play.api.Logger").getMethod("init", classOf[java.io.File]).invoke(null, new java.io.File("."))
    },

    testOptions in Test += Tests.Cleanup { loader =>
      loader.loadClass("play.api.Logger").getMethod("shutdown").invoke(null)
    },

    testOptions in Test += Tests.Argument("sequential", "true"),

    testOptions in Test += Tests.Argument("junitxml", "console"),

    testListeners <<= (target, streams).map((t, s) => Seq(new eu.henkelmann.sbt.JUnitXmlTestsListener(t.getAbsolutePath, s.log))),

    testResultReporter <<= testResultReporterTask,

    testResultReporterReset <<= testResultReporterResetTask,

    sourceGenerators in Compile <+= (confDirectory, sourceManaged in Compile, routesImport) map RouteFiles,

    // Adds config/routes to continious triggers
    watchSources <+= confDirectory map { _ / "routes" },

    sourceGenerators in Compile <+= (sourceDirectory in Compile, sourceManaged in Compile, templatesTypes, templatesImport) map ScalaTemplates,

    // Adds views template to continious triggers
    watchSources <++= baseDirectory map { path => ((path / "app") ** "*.scala.*").get },

    commands ++= Seq(shCommand, playCommand, playRunCommand, playStartCommand, h2Command, classpathCommand, licenseCommand, computeDependenciesCommand),

    shellPrompt := playPrompt,

    copyResources in Compile <<= (copyResources in Compile, playCopyAssets) map { (r, pr) => r ++ pr },

    mainClass in (Compile, run) := Some(classOf[play.core.server.NettyServer].getName),

    compile in (Compile) <<= PostCompile,

    dist <<= distTask,

    computeDependencies <<= computeDependenciesTask,

    playVersion := play.core.PlayVersion.current,

    playCommonClassloader <<= playCommonClassloaderTask,

    playCopyAssets <<= playCopyAssetsTask,

    playCompileEverything <<= playCompileEverythingTask,

    playPackageEverything <<= playPackageEverythingTask,

    playReload <<= playReloadTask,

    playStage <<= playStageTask,

    cleanFiles <+= distDirectory,

    ebeanEnabled := false,

    logManager <<= extraLoggers(PlayLogManager.default),

    ivyLoggingLevel := UpdateLogging.DownloadOnly,

    routesImport := Seq.empty[String],

    playIntellij <<= playIntellijTask,

    playHash <<= playHashTask,

    // Assets

    playAssetsDirectories := Seq.empty[File],

    playAssetsDirectories <+= baseDirectory / "public",

    resourceGenerators in Compile <+= LessCompiler,
    resourceGenerators in Compile <+= CoffeescriptCompiler,
    resourceGenerators in Compile <+= JavascriptCompiler,

    lessEntryPoints <<= (sourceDirectory in Compile)(base => ((base / "assets" ** "*.less") --- base / "assets" ** "_*")),
    coffeescriptEntryPoints <<= (sourceDirectory in Compile)(base => base / "assets" ** "*.coffee"),
    javascriptEntryPoints <<= (sourceDirectory in Compile)(base => ((base / "assets" ** "*.js") --- (base / "assets" ** "_*"))),

    lessOptions := Seq.empty[String],
    coffeescriptOptions := Seq.empty[String],
    closureCompilerOptions := Seq.empty[String],

    // Templates

    templatesImport := Seq("play.api.templates._", "play.api.templates.PlayMagic._"),

    templatesTypes := {
      case "html" => ("play.api.templates.Html", "play.api.templates.HtmlFormat")
      case "txt" => ("play.api.templates.Txt", "play.api.templates.TxtFormat")
      case "xml" => ("play.api.templates.Xml", "play.api.templates.XmlFormat")
    })

Next: Managing library dependencies