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sbt-handlebars

This is an sbt-web plugin enabling client side html rendering using the handlebar libraray in Play >=2.3.x.

How to install

Add a resover in project/plugin.sbt

resolvers ++= Seq(
  Resolver.url("Dataflow repository", url("https://amadeus82.github.io/repo"))(Resolver.ivyStylePatterns)
)

Add a plugin dependency in project/plugin.sbt

addSbtPlugin("com.dataflow.sbt" % "sbt-handlebars" % "1.0.0")

Add a library dependency in build.sbt for the external handlebars web-jar

libraryDependencies ++= Seq(
  "org.webjars" % "handlebars" % "2.0.0-alpha.2"
)

Add the handleburs plugin to the list of sourceGenerators in build.sbt

sourceGenerators in Assets <+= handlebars

Reference two javascript files in your view where ever needed (i.e. main.scala.html)

<script src="@routes.Assets.at("lib/handlebars/handlebars.min.js")"></script>
<script src="@routes.Assets.at("templates.js")" type="text/javascript" charset="utf-8"></script>

Please be aware that the order of those two lines matter as the javascript file (templates.js) generated by this plugin extends the Handlebar object by a new member Templates.

Usage:

If you have a handlebars template at app/assets/handlebars/filter/standard.html This template will be available as a javascript object Handlebars.Templates.Filter.Standard

Example:

In order to render a file: app/assets/handlebars/filter/standard.html having the variable hint, description and items, you write the following javascript code on the client side.

Handlebars.compile(Handlebars.Templates.Filter.Standard)({
  hint: Messages('layout.filter.dialog.hint.caption'),
  description: Messages('layout.filter.dialog.hint.description'),
  items: items
});