Mastering Play Framework for Scala

Shiti Saxena

• Verlag: Packt Publishing
• Jahr: 2015
• ISBN:
  9781783983803
• Thema: Computer Science
• Thema: Application Development

Mastering Play Framework for Scala

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Table of Contents

Mastering Play Framework for Scala

Credits

About the Author

Acknowledgments

About the Reviewers

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Preface

What this book covers

What you need for this book

Who this book is for

Conventions

Reader feedback

Customer support

Downloading the example code

Errata

Piracy

Questions

1. Getting Started with Play

Venturing into the world of Play

A sample Play app

Building a Play application using Activator

The build definition

The source code

Request handling process

Creating a TaskTracker application

Adding a new task

Deleting a task

Summary

2. Defining Actions

A dummy Artist model

Actions

Actions with parameters

Request body parsers

Extending a parser

Exploring the results

Asynchronous Actions

Content negotiation

Filters

Action composition

The need for an Action composition

Differentiating between Action composition and filters

Customized requests

The need for a user object

Troubleshooting

Summary

3. Building Routes

Introduction to Play routes

Automatic generation of routes_routing.scala

Reverse routing

JavaScript reverse routing

Assets

Client-side libraries

Configuring route definitions

Dynamic paths

Static paths

Configuring request parameters

Troubleshooting

Summary

4. Exploring Views

Diving into Scala templates

Building a view

Generating forms

Adding constraints on data

Handling errors

Form-field helpers

Internationalization

Supporting views in multiple languages

Understanding internationalization

Scala templating in Play

Understanding the working of Twirl

Troubleshooting

Summary

5. Working with Data

Introducing models

JDBC

Anorm

Slick

ReactiveMongo

The Cache API

Troubleshooting

Summary

6. Reactive Data Streams

Basics of handling data streams

Iteratees

Enumerator

Using the Concurrent object

Unicast

Broadcast

Enumeratees

Binding an Enumeratee to an Enumerator

Binding an Enumeratee to an Iteratee

Summary

7. Playing with Globals

GlobalSettings

The life cycle of an application

Meddling with an application's life cycle

The request-response life cycle

Fiddling with the request-response life cycle

Manipulating requests and their responses

Tackling errors and exceptions

Summary

8. WebSockets and Actors

An introduction to WebSockets

WebSockets in Play

Actor Model

Introducing Akka Actors

WebSocket using Iteratee

WebSocket using Actors without Iteratees

Closing a WebSocket

Using FrameFormatter

Troubleshooting

Summary

9. Testing

The setup for writing tests

Unit testing

Dissecting PlaySpecification

Unit testing a controller

Using traits for controllers

Using dependency injection

Functional testing

Using Specs2

Using ScalaTest

Summary

10. Debugging and Logging

Debugging a Play application

Configuring an IDE for debugging

Experimenting in a Scala console

Logging

Play's logging API

Log configuration in Play

Log levels

Summary

11. Web Services and Authentication

Calling web services

OpenID

OAuth

Summary

12. Play in Production

Deploying a Play application

Using the start command

Using a distribution

Universal distribution

Debian distribution

The rpm distribution

Windows distribution

Configuring for production

Enabling SSL

Using a load balancer

Apache HTTP

The nginx server

lighttpd

High Availability Proxy

Troubleshooting

Summary

13. Writing Play Plugins

Plugin definition

Plugin declaration

Exposing services through plugins

Tips for writing a plugin

Summary

Index

Mastering Play Framework for Scala

Copyright © 2015 Packt Publishing

All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.

Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, nor Packt Publishing, and its dealers and distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.

Packt Publishing has endeavored to provide trademark information about all of the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.

First published: May 2015

Production reference: 1260515

Published by Packt Publishing Ltd.

Livery Place

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Birmingham B3 2PB, UK.

ISBN 978-1-78398-380-3

www.packtpub.com

Credits

Author

Shiti Saxena

Reviewers

Didier Bathily

Jérôme Leleu

Jon Parsons

Commissioning Editor

Amarabha Banerjee

Acquisition Editor

Subho Gupta

Content Development Editor

Sriram Neelakantan

Technical Editors

Novina Kewalramani

Manal Pednekar

Shruti Rawool

Copy Editors

Sonia Michelle Cheema

Vikrant Phadke

Project Coordinator

Vijay Kushlani

Proofreaders

Stephen Copestake

Safis Editing

Indexer

Monica Ajmera Mehta

Graphics

Sheetal Aute

Disha Haria

Production Coordinator

Arvindkumar Gupta

Cover Work

Arvindkumar Gupta

About the Author

Shiti Saxena is a software engineer with around 4 years of work experience. She is currently working with Imaginea (a business unit of Pramati). She has previously worked with Tata Consultancy Services Ltd. and Genpact.

A true polyglot, she's had exposure to various languages, including Scala, JavaScript, Java, Python, Perl, and C. She likes to work with Play Scala and AngularJS.

She blogs at http://eraoferrors.blogspot.in and maintains open source projects on GitHub.

She loves to travel, is a movie buff, and likes to spend time playing her piano whenever she is not programming.

She has authored Getting Started with SBT for Scala (https://www...