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

Dynamic maintains form


In the previous section, we made another improvement to our application by enabling some live updates while using the dashboard, all this using a polling system that targets a dedicated action.

However, we saw that it wasn't enough to excite the "chatrumer"; indeed, each time he/she posts a message or a file, he/she will be redirected to a new page. That's not what we call a "user-friendly" interface.

Note

Chatrum: A fancy combination of chatting and forum.

Moreover, we did a very wild thing with the code, which was the hardcoding of a URL—that's so scary.

To recover our peace, and the user's, we're going to use the amazing features that Play! 2 is providing us with: a client-side router and a JavaScript version of the server-side router which was used to perform redirects and so on. Both the server and the client routers are generated by Play! 2's code generator based on the routes file.

Going even further, we'll reduce the number of forms (for posting) from twice the...