Learning Play! Framework 2


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Lightbend offers annual subscriptions, training courses, and enablement services. These popular enablement services and training courses help you get value fast. As the maintainers of Play, Lightbend offers technologies, expert support, and additional services to enterprises as part of a subscription to Lightbend Platform.

Lightbend subscribers get access to advanced telemetry and integrations to various APM technologies for monitoring Play Framework applications, including server, server endpoint, and client metrics as well as request tracing. Play Framework is a web development framework that empowers developers to build highly scalable, lightning-fast applications with an ease unparalleled on the JVM.

Built on Reactive principles from the ground-up and based on Akka and Akka Streams, Play is stateless, asynchronous and non-blocking.


  • ISBN 10: 1782160124.
  • Learning Play! Framework 2;
  • For Prophet and Tsar.

So applications built using Play deliver all of the benefits of Reactive systems, including a high degree of responsiveness, elasticity and resilience. Play also offers a host of developer-friendly features including powerful Scala and Java APIs, an easy-to-use MVC paradigm along with hot-reloading, interoperability with multiple runtime and compile-time dependency injection frameworks, modularity and extensibility - significantly accelerating developer productivity and business velocity. Play is built for modern web and mobile apps.

Play leverages modern multi-core architecture capabilities to handle massive numbers of concurrent users by default without requiring developers to utilize cumbersome multi-threaded programming techniques. Play lets you breathe new life into your aging infrastructure. Play was designed from day one to run in a variety of environments consisting of small and ephemeral virtual machines enabling huge cost savings in web-related infrastructure.

Lightbend Platform Design, build, deploy, and manage Reactive microservices architectures and real-time streaming pipelines. This is fairly simple. Just go to the Download link in the upper-right-hand side of the website and click on the Latest official version link.


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This will download a. Unzip it to a location of your choice. This package can seem quite large almost MB, compressed , but if we have a look inside, we'll see that it contains everything needed to run the framework or for the developer to develop with it. That's because it is composed of documentation, libraries with their dependencies repository , and the framework itself. This means that even when disconnected, we'll have access to all the information needed.

APIs Apart from these, we'll find the samples folder. It is a mine of snippets for common tasks and is split into two parts: j ava and scala. As you can imagine, here we have an access to plenty of simple or advanced Play! For example, the forms sample project that introduces some patterns to deal with forms, or the websocket-chat sample project that goes deeper into the details of using the more advanced Play! At this stage, we're almost done; all we have to do is to update our path environment variable to point to the extracted folder, which contains the command-line tool: play!.


  • Death, Dying, and Beyond: How to Prepare for the Journey Vol 1;
  • Introduction - x?
  • Book Review: Learning Play! Framework 2.
  • Markovian Demand Inventory Models.

However, before that, as Play! Framework 2 is a JVM web framework, you must check that Java 6 or a higher version is installed and available for use. Chapter 1 Microsoft Windows Let's perform the following steps to update our path environment variable: 1. Press the Windows key. Type sys var.

GitHub - Manc/play-samples: Learning to use Play Framework 2 with Scala and MongoDB

Select Edit the system environment variables. In the new window, click on the Environment Variables Delete Cancel ance iffects. Environment Variables.. Apply Getting Started with Play! Framework is now part of a more general stack provided by Typesafe, which redefines almost all the layers of the modern applications built on top of the JVM: the Typesafe Stack 2. Roughly, it begins with the language Scala , continues with a concurrent layer Akka , and completes with a web layer Play! It's quite helpful to install the stack rather than Play! Checking if it's okay in your terminal At this stage, we can use the command-line tool embedded with Play!

This tool, simply named play! Use "play new" to create a new Play application in the current directory, or go to an existing application and launch the development console using "play". Don't worry about the message; it only tells you that you weren't in a valid Play! What's interesting at this point is that the play! As you may notice, it recommends that you create your first application. Here we go! Creating your first project Now that your machine is prepared, we can create our first project using the play command.

As we have just seen, Play! Framework 2 comes with a handy command-line tool, which is the easiest and fastest way to create a new project. Have fun! As we can see from the previous screenshot of the console, in order to create a brand new application in a directory, we just have to use the play! The tool will ask us to specify whether our application is a Scala or Java application, or even an empty project. In the first two cases, the structure of the application will be created along with the source files for the chosen language. In the third case, only the structure will be created— without sample code though.

By the way, the last option has been removed in the Play! Thus only the first two options remain now. I Let's have a very quick overview of the created structure we'll go into further details later on in this book.

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At first, a new directory will be created with the name of the application, that is, play- j book. At creation, only two subfolders will be created: controllers and views. A dedicated folder has been created for each type as well. Keeping your habits In the previous section, we installed the framework on our machine, and we even created our first application. The next natural step for any developer would be to open the project in our preferred IDE. It is good for us that Play! That's because everything has already been packaged in the Play!

Being in the console, you now have access to plenty of commands related to your project this should sound like deja vu for those who've used Maven plugins ; for example, version, name, and dependencies. Just try them, or hit the Tab key twice.

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Commands have been created to execute tasks such as generating files based on the project. Among them is the generation of the IDE settings. Using Eclipse Eclipse is probably the most commonly used editor by the Java community, the advantages being: it's free, has a strong community, and provides a powerful extension framework. Eclipse Juno While in the play! Now we can open Eclipse and import the project into it.

For that, let's perform the following steps: 1. Go to File Import. Framework 2 2. A new panel invites you to browse your filesystem in order to locate the project folder. API is recognized along with the generated template sources index. As it's an Eclipse plugin, all we have to do is to start an Indigo version of Eclipse. Then go to Help Install New Software In order to import our project, we can just repeat the same steps that we performed earlier in the Eclipse Juno section.

Learning Play! Framework 2 (Tips Techniques)

So do the features including syntax coloring for the Scala code, code browsing, contextual documentation, and so on. At least, we can choose between the free version Community —which has less features — and the other one Ultimate. Framework 2 Let's go back to the play! Now we can simply open the folder itself as a project in IDEA.

Play! Framework 2.0 Tutorial Simple Form

Hopefully, we will get the same kind of features that we get with Eclipse. Sublime Text 2 comes with features than an IDE.

Learning Play! Framework 2 Learning Play! Framework 2
Learning Play! Framework 2 Learning Play! Framework 2
Learning Play! Framework 2 Learning Play! Framework 2
Learning Play! Framework 2 Learning Play! Framework 2
Learning Play! Framework 2 Learning Play! Framework 2
Learning Play! Framework 2 Learning Play! Framework 2
Learning Play! Framework 2 Learning Play! Framework 2
Learning Play! Framework 2 Learning Play! Framework 2

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