May 2015
Intermediate to advanced
274 pages
5h 11m
English
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Chapter 13. Writing Play Plugins
In order to make our applications manageable, we break them down into independent modules. These modules can also be extracted into individual projects/libraries.
A Play plugin is nothing but another module with an additional ability—of binding tasks before starting, on starting and/or stopping a Play application. In this chapter, we will see how to write custom plugins.
In this chapter, we will cover the following topics:
- Plugin definition
- Plugin declaration
- Exposing services through plugins
- Tips for writing a plugin
Plugin definition
A Play plugin can be defined by extending play.api.plugin, which is defined as follows:
trait Plugin { //Called when the application starts. def onStart() {} // Called when the application ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.