Play Framework Cookbook - Second Edition

Book Image

Play Framework Cookbook - Second Edition

By : Alexander Reelsen, Giancarlo Inductivo

Book Image

Play Framework Cookbook - Second Edition

By: Alexander Reelsen, Giancarlo Inductivo

Overview of this book

<p>As web and mobile systems become more sophisticated, anchoring systems in a mature, solid framework has become increasingly important. Play 2 provides developers with the necessary tools to build robust web applications.</p> <p>This book is a compilation of useful recipes aimed at helping developers discover the power of Play 2. The introductory section serves as a primer to Play Framework, wherein all the fundamentals of the framework are covered extensively. It then explains the usage of controllers and how modules can be leveraged for optimal performance. Next, the book walks you through creating and using APIs, followed by extensive real-world applications. Finally, you will learn to manage applications post production.</p>

Play Framework Cookbook Second Edition

Play Framework Cookbook Second Edition

Credits

About the Authors

About the Authors

About the Reviewers

About the Reviewers

www.PacktPub.com

www.PacktPub.com

Preface

Free Chapter

Basics of Play Framework

Basics of Play Framework

Installing Play Framework

Creating a Play application using Typesafe Activator

Using the Play console

Working with modules

Working with controllers and routes

Using Action parameters in controllers

Using reverse routing and redirects

Working with View templates

Using helper tags

Using View layouts and Includes

Working with XML and text files

Using Ebean (Java) with MySQL

Using Anorm (Scala) and database evolutions with MySQL

Using a form template and web action

Using form validation

Securing form submission

Testing with JUnit (Java) and specs2 (Scala)

Testing controllers

Using Controllers

Using Controllers

Using HTTP headers

Using HTTP cookies

Using the session

Using custom actions

Using path binders

Uploading files

Using futures with Akka actors

Leveraging Modules

Leveraging Modules

Dependency injection with Spring

Dependency injection using Guice

Utilizing MongoDB

Utilizing MongoDB and GridFS

Utilizing Redis

Integrating Play application with Amazon S3

Integrating with Play application Typesafe Slick

Utilizing play-mailer

Integrating Bootstrap and WebJars

Creating and Using Web APIs

Creating and Using Web APIs

Creating a POST API endpoint

Creating a GET API endpoint

Creating a PUT API endpoint

Creating a DELETE API endpoint

Securing API endpoints with HTTP basic authentication

Consuming external web APIs

Using the Twitter API and OAuth

Creating Plugins and Modules

Creating Plugins and Modules

Creating and using your own plugin

Building a flexible registration module

Using the same model for different applications

Managing module dependencies

Adding private module repositories using Amazon S3

Practical Module Examples

Practical Module Examples

Integrating a Play application with message queues

Integrating a Play application with ElasticSearch

Implementing token authentication using JWT

Deploying Play 2 Web Apps

Deploying Play 2 Web Apps

Deploying a Play application on Heroku

Deploying a Play application on AWS Elastic Beanstalk

Deploying a Play application on CoreOS and Docker

Deploying a Play application with Dokku

Deploying a Play application with Nginx

Additional Play Information

Additional Play Information

Testing with Travis CI

Monitoring with New Relic

Integrating a Play application with AngularJS

Integrating a Play application with Parse.com

Creating a Play development environment using Vagrant

Coding Play 2 web apps with IntelliJ IDEA 14

Index

Customer Reviews

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Using custom actions

For this recipe, we will explore how Play Framework provides the building blocks for creating reusable, custom actions.

How to do it…

For Java, we need to take the following steps:

Run the foo_java application with Hot-Reloading enabled.

Modify foo_java/app/controllers/Application.java by adding the following action:

    @With(AuthAction.class)
    public static Result dashboard() {
        return ok("User dashboard");
    }

    public static Result login() {
        return ok("Please login");
    }

Add our new action class to foo_java/app/controllers/AuthAction.java as well:

package controllers;

import play.*;
import play.mvc.*;
import play.libs.*;
import play.libs.F.*;

public class AuthAction extends play.mvc.Action.Simple {
    public F.Promise<Result> call(Http.Context ctx) throws Throwable {
        Http.Cookie authCookie = ctx.request().cookie("auth");

        if (authCookie != null) {
          Logger.info("Cookie: " + authCookie);
          return delegate...