Play 2.4.0 "Damiya" is released

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Greg Methvin

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May 27, 2015, 8:37:28 PM5/27/15
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After a year of development the Play Team is excited to announce the release of Play 2.4.0 “Damiya”.


Play 2.4 gives you more modularity and flexibility. You can now configure your application with dependency injection. Or you can embed it in another application. You can mock parts of your application more easily. Play modules like Ebean and anorm have become their own projects, allowing them to release more often on their own schedules. All of this makes Play more powerful than ever before.


What’s new in Play 2.4


  1. Dependency injection out of the box.

  2. Testing is easier thanks to better support for mocking.

  3. It is now straightforward to embed Play in your application.

  4. You can now aggregate reverse routers from multiple projects.

  5. More Java 8 integration—Java 8 is now required.

  6. Choice of standard project layout.

  7. Many new anorm features. Anorm is now its own project!

  8. Upgraded to Ebean 4. Play-Ebean is (also) its own project!

  9. HikariCP is the default connection pool

  10. WS supports Server Name Identification (SNI).

  11. Simplified Logback configuration.

  12. Play’s bytecode enhancement has been separated out into its own project.

  13. More flexible IDE support.

  14. Lots of work on improving the documentation.


For details see the Play 2.4 Highlights and the Play 2.4 Migration Guide.


Damiya


Play 2.4 has been named “Damiya”, in memory of Play contributor Kate von Roeder, who went by the alias damiya on GitHub.


Download Play 2.4.0


If you already have Activator installed, run activator new and choose play-scala or play-scala to create a new Play 2.4.0 project. Visit the Play downloads page for information on how to download and install Activator, and get started with Play.


Credits


Development of Play 2.4 has been underway for a year. The 2.4.0 release is made up of over 1000 commits by 176 different people. Of the 176 contributors, 129 are new to the Play project. That makes an all-time total of 494 contributors to Play.


It’s not all about the code either. We’d also like to thank everyone that got involved in the community in other ways too, reporting bugs, on the mailing list, on Stack Overflow and in our new Gitter chat room. It’s amazing to see the growing size and strength of Play’s community.


Thanks a lot everyone, we couldn’t do it without you!


– The Play Team

Ben McCann

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May 27, 2015, 8:47:49 PM5/27/15
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Woohoo! Best Play release yet!

Giovanni

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May 27, 2015, 9:18:43 PM5/27/15
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Wonderful!

I am starting to use it immediately.

Thanks a lot for the smart and hard work.

Best regards,
giovanni


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Christopher Hunt

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May 27, 2015, 9:51:57 PM5/27/15
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Congratulations to the extended team and to the community at large - this is an amazing release.

Nice also to recognise Damiya.

Rock on!

Kind regards,
Christopher

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ConductR Tech Lead
Typesafe – Build Reactive Apps on the JVM!

Twitter: @huntchr

Yann Simon

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May 28, 2015, 2:17:40 AM5/28/15
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congrats everybody involved.
I am still amazed how play evolved while kept simple and (almost) backwards compatible!

It is a great lesson about how software can live for a long time.

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Marios Papasofokli

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May 28, 2015, 2:46:40 AM5/28/15
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Great news, we are upgrading the next few days. 

A big thank you to everyone involved! 

Kind Regards,

Marios Papasofokli
Software Engineer @RadiantFleet

Lutz Hühnken

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May 28, 2015, 3:26:24 AM5/28/15
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Huge congrats to everyone involved!

Wait, just getting towards the end..

> run activator new and choose play-scala or play-scala 

Being a big Scala fan, I love the Scala bias... but just for completeness, Java devs, you can in fact also choose play-java ;)

Rich Dougherty

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May 28, 2015, 3:39:06 AM5/28/15
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On Thu, May 28, 2015 at 7:26 PM, Lutz Hühnken <lutz.h...@gmail.com> wrote:
> run activator new and choose play-scala or play-scala 

Being a big Scala fan, I love the Scala bias... but just for completeness, Java devs, you can in fact also choose play-java ;)

Sorry Java devs, that was my mistake. Don't worry, we love you too!

– Rich

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Markus Jura

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May 28, 2015, 5:34:31 AM5/28/15
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Huge congrats, especially to the 2/3 of new committers. This is outstanding!

Sean Brady

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May 28, 2015, 7:37:23 AM5/28/15
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Excellent work! Thanks to all the contributors!

laguiz

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May 28, 2015, 8:26:35 AM5/28/15
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Seems that I cannot get `com.typesafe.sbt#play-enhancer;1.1.0`.

I followed `Bytecode enhancement` from https://www.playframework.com/documentation/2.4.x/Migration24 .


Any idea?

Btw, very excited about this release!

Tazobactam

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May 28, 2015, 11:03:40 AM5/28/15
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Congratulations to the team. In my opinion - as someone who only has dabbled in play and follows the issues/pull requests on a daily basis as a reader - Plays best release yet. It's nice to see how far Play has come since the initial 2nd version. But already looking forward to version 3 when you will get rid of the global state entirely.

Michael Slinn

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May 28, 2015, 2:10:05 PM5/28/15
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All of the material in our "Introduction to Play" course, including code examples and lecture notes has been updated to Play 2.4.0

Mike

Jun Yamog

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May 28, 2015, 5:35:35 PM5/28/15
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Congratulations to the play team and contributors. We are looking forward to the upgrade and make testing of our components easier.
On Fri, 29 May 2015 at 6:10 am Michael Slinn <msl...@gmail.com> wrote:
All of the material in our "Introduction to Play" course, including code examples and lecture notes has been updated to Play 2.4.0

Mike

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Christian Schmitt

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May 29, 2015, 8:59:26 AM5/29/15
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I still don't get the thing with the ApplicationLifecycle. I tried the same thing as in the guide: https://www.playframework.com/documentation/2.4.x/JavaDependencyInjection
However I always get the following errors:
CreationException: Unable to create injector, see the following errors: 1) Error injecting constructor, java.lang.RuntimeException: There is no started application at de.envisia.search.services.SearchService.<init>(SearchService.java:29) at de.envisia.search.modules.SearchModule.configure(SearchModule.java:12) (via modules: com.google.inject.util.Modules$OverrideModule -> de.envisia.search.modules.SearchModule) while locating de.envisia.search.services.SearchService 1 error

or

CreationException: Unable to create injector, see the following errors: 1) No implementation for play.inject.ApplicationLifecycle was bound. while locating play.inject.ApplicationLifecycle for parameter 0 at de.envisia.search.services.SearchService.<init>(SearchService.java:29) at de.envisia.search.modules.SearchModule.configure(SearchModule.java:12) (via modules: com.google.inject.util.Modules$OverrideModule -> de.envisia.search.modules.SearchModule) 1 error

laguiz

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May 29, 2015, 9:24:22 AM5/29/15
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I got this error multiple times but I finally figure out by reading the doc properly starting from https://www.playframework.com/documentation/2.4.x/Migration24 and https://www.playframework.com/documentation/2.4.x/GlobalSettings

In my case I needed the current Environment and Configuration (previously accessible from Play static methods). What I did (the idea) :

1. Create @Singleton `Global.java` and @Inject in Constructor what you need

import play.Configuration;
import play.Environment;

import javax.inject.Inject;
import javax.inject.Singleton;

@Singleton
public class Global {

@Inject
public Global(Environment environment, Configuration configuration
) {
        //Access to environment.isDev() and configuration
}

}

2. Eager init your Global @Singleton with a Module like this (tips from documentation) : 
```
public class AppModule extends AbstractModule {

protected void configure() {
//Eager load Global to ensure we init stuff when application start
bind(Global.class).asEagerSingleton();
}

}

3. Add in you `application.conf` your module

play.modules.enabled += "modules.AppModule"


In my case I created more "levels" of injection (Global use injected MyStuff that use injected Environment in MyStuff class controller) but the idea is the same.


Does this help?

Christian Schmitt

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May 29, 2015, 9:32:56 AM5/29/15
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Oh yeah it would have helped, but I read that paragraph aswell, the last minutes, however I didn't thought that I could inject Configuration, since Configuration gets injected into the abstract module. which has no @Inject annotation..
...

Mohsen Kashi

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May 30, 2015, 3:37:32 AM5/30/15
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getControllerInstance removed from GlobalSettings and there is not any solution about it in migration guide. I set Spring DI in my project and now I cant migrate to play 2.4 

Lawrence Kim

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May 30, 2015, 9:47:51 AM5/30/15
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Congratulations! I'm happy to meet Damiya.

Thanks for every contributor.

2015년 5월 28일 목요일 오전 9시 37분 12초 UTC+9, Greg Methvin 님의 말:

Rich Dougherty

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May 30, 2015, 1:58:34 PM5/30/15
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We've designed Play 2.4 dependency injection system to work well with Spring. Here's a proof of concept from last year, it would be great it someone could take the proof of concept and update and maintain it!

– Rich

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Igmar Palsenberg

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Jun 1, 2015, 6:11:43 AM6/1/15
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1) Error injecting constructor, java.lang.RuntimeException: There is no started application at de.envisia.search.services.SearchService.<init>(SearchService.java:29) at de.envisia.search.modules.SearchModule.configure(SearchModule.java:12) (via modules: com.google.inject.util.Modules$OverrideModule -> de.envisia.search.modules.SearchModule) while locating de.envisia.search.services.SearchService

What is the actual code ? This usually happens if you either : 

1) Inject Application
2) Use Play.application()*


Igmar 

Saeed Zarinfam

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Jun 1, 2015, 6:28:13 AM6/1/15
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This sample project is in Scala and also old, there is not any guide to setup Play 2.4 dependency injection with Spring DI and Java. please add a template project for it. We want to migrate our project to Play 2.4 but we do not want to use Guice.

Thanks.


On Saturday, May 30, 2015 at 10:28:34 PM UTC+4:30, Rich Dougherty wrote:
We've designed Play 2.4 dependency injection system to work well with Spring. Here's a proof of concept from last year, it would be great it someone could take the proof of concept and update and maintain it!

– Rich

On Sat, May 30, 2015 at 7:37 PM, Mohsen Kashi <mhmh...@gmail.com> wrote:
getControllerInstance removed from GlobalSettings and there is not any solution about it in migration guide. I set Spring DI in my project and now I cant migrate to play 2.4 

James Roper

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Jun 1, 2015, 10:43:55 AM6/1/15
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On Monday, June 1, 2015 at 6:28:13 PM UTC+8, Saeed Zarinfam wrote:
This sample project is in Scala and also old, there is not any guide to setup Play 2.4 dependency injection with Spring DI and Java. please add a template project for it. We want to migrate our project to Play 2.4 but we do not want to use Guice.

Out of interest, why don't you want to use Guice?
 
Support for spring doesn't exist yet.  When Play 2.4.0-M1 was released, I did a proof of concept to make sure that a Spring support could be implemented:


It's way out of date, needs a lot of work, and is waiting for someone to take ownership of it to complete it.

v6ak

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Jun 2, 2015, 5:31:49 AM6/2/15
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When one uses encryptAES/decryptAES, it is wise to doublecheck if the code is still secure after migration. Some details on new crypto API issues: https://groups.google.com/forum/#!topic/play-framework/Pao8MnADAqw

Regards,
Vít Šesták 'v6ak'


On Thursday, May 28, 2015 at 2:37:28 AM UTC+2, Greg Methvin wrote:

Saeed Zarinfam

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Jun 3, 2015, 11:25:19 AM6/3/15
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I use Guice and Spring ApplicationContext together in this project, I think this temporary solution fix our problem.  

Hari Kuragayala

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Jun 5, 2015, 10:04:17 PM6/5/15
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It's pretty slick.

Nash Gadre

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Jun 16, 2015, 3:02:13 PM6/16/15
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Congrats Everyone!
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