Book Image

Building Applications with Scala

By : Diego Pacheco
Book Image

Building Applications with Scala

By: Diego Pacheco

Overview of this book

<p>Scala is known for incorporating both object-oriented and functional programming into a concise and extremely powerful package. However, creating an app in Scala can get a little tricky because of the complexity the language has. This book will help you dive straight into app development by creating a real, reactive, and functional application. We will provide you with practical examples and instructions using a hands-on approach that will give you a firm grounding in reactive functional principles.</p> <p>The book will take you through all the fundamentals of app development within Scala as you build an application piece by piece. We’ve made sure to incorporate everything you need from setting up to building reports and scaling architecture. This book also covers the most useful tools available in the Scala ecosystem, such as Slick, Play, and Akka, and a whole lot more. It will help you unlock the secrets of building your own up-to-date Scala application while maximizing performance and scalability.</p>
Table of Contents (17 chapters)
Building Applications with Scala
Credits
About the Author
Acknowledgments
About the Reviewer
www.PacktPub.com
Preface

The chat controller


We will need to create a new controller. This controller will be located at ReactiveWebStore/app/controllers.

Implementing the chat controller

ChatController.scala should look something like this:

    package controllers  
    import akka.actor.ActorSystem 
    import akka.stream.Materializer 
    import javax.inject._ 
    import play.api._ 
    import play.api.mvc._ 
    import play.api.libs.streams._ 
    import actors.ChatUserActor 
    import actors.ChatBotAdminActor  
    @Singleton 
    class ChatController @Inject() (implicit val system: ActorSystem,
    materializer: Materializer) 
    extends Controller {  
      import play.api.libs.concurrent.Execution.
      Implicits.defaultContext 
      ChatBotAdminActor(system)  
      def index_socket = Action { request => 
        Ok(views.html.chat_index()(Flash(Map()))) 
      } 
      def ws = WebSocket.accept[String,...