play framework 2

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Play Framework 2Yannick De Turck

16/10/2014

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Play, just another web framework?

Based on a lightweight, stateless and web-friendly architecture High scalability

Develop in Scala and/or Java

Developer friendly

- Focus on productivity

- Only need a texteditor and browser

- Hit refresh workflow

- Type safety

Open Source

Inspired on Rails and Django

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Who uses Play?

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MVC architecture

Model (Java and/or Scala)

Controller (Java and/or Scala)

View (templates, HTML and Scala)

Routes

- Mapping url paths and Controllers

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Type Safety

Majority of code gets compiled including:

- Templates

- Assets (Coffeescript, LESS)

Detect errors as early as possible

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Conventions of configurations

Vast structure

A lot of functionalities come with the core bundle

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build.sbt

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app/models

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app/controllers

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app/views

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conf/application.config

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conf/messages

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conf/routes

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Hot reloading

Start server once

Make code change

Hit F5 in browser

Change is live!

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Errors displayed in browser

Compilation and runtime errors are displayed in browser

Go fix and hit F5!

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Database evolutions

Track your database schema changes

Robust way to update PROD schema

Two sections

- Ups (create, insert,…)

- Downs (drop, delete,…)

Number files (1.sql, 2.sql,…)

Automatically or manually executed

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Setting up Play

Download at https://www.playframework.com/download

Add to PATH

Verify set up correctly via activator -help

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Creating a new project

Via terminal/console:

- activator new

- Choose template/seed

- Pick a name

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Creating a new project

Via UI:

- activator ui

- Pick seed

- Choose locationfor the project

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Creating a new project

Generate project files for your favourite IDE

- IntelliJ: activator idea

- Eclipse: activator eclipse

Open the project in your favourite IDE

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Documentation

https://www.playframework.com/documentation

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Follow tutorials

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Personal experience

Refreshing and very pleasant to work with

Go with Scala instead of Java

Hot reloading is awesome

Helpful community

Actively being worked on

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Q&A

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Useful links

https://www.playframework.com

https://groups.google.com/forum/#!forum/play-framework

Presentation available on SlideShare: http://goo.gl/OK65BX