Book Image

Learning Play! Framework 2

By : Andy Petrella
Book Image

Learning Play! Framework 2

By: Andy Petrella

Overview of this book

<p>The Learning Play! Framework 2 has been created for web developers that are building web applications. The core idea is to focus on the HTTP features and to enable them through a simplification lens. Building a web application no longer requires a configuration phase, an environment setup, or a long development lifecycle - it's integrated!<br /><br />Learning Play! Framework 2 will enable any web developers to create amazing web applications taking advantage of the coolest features. It's the fastest way to dive into Play!, focusing on the capabilities by using them in a sample application. Although essentially Java based code, a Scala version is presented as well – giving an opportunity to see some Scala in action.<br /><br />After setting up the machine and learning some Scala, you will construct an application which builds from static to dynamic, before introducing a database. <br /><br />Then we'll focus on how data can be consumed and rendered in several ways. This will enable some real time communication through WebSocket and Server-Sent Event – on both server and client sides.</p> <p>The book will end with testing and deployment, which completes any web development project.</p>
Table of Contents (20 chapters)
Learning Play! Framework 2
Credits
About the Author
Acknowledgement
About the Reviewers
www.packtpub.com
Preface
Materials
Index

Chapter 4. Handling Data on the Server Side

In the previous chapter, we were introduced to the templating system that enables us to create amazing views or to render data coming from the server.

In this chapter, we'll focus on this last point: server data. Until now, it was hardcoded in our actions and given directly to the views.

Of course, it's never that simple; data is regularly coming from a database, or at least has been provided (at some time) by a user. So, we'll see how Play! 2 deals with these use cases. The following is an overview of what will be achieved in this chapter:

  • Create an HTML form to represent data

  • Send data to the server

  • Retrieve data from the server

  • Add constraints to the data

  • Persist data in a relational database

  • Provide and render back the data to the client