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Running with Vagrant

Create and provision the vagrant box with vagrant up

Login to vagrant box with

vagrant ssh

cd to directory with project source code

cd /vagrant

run the application with sbt

sbt run

the terminal will have the following output

vagrant@vagrant-ubuntu-trusty-64:/vagrant$ sbt run
[info] Loading project definition from /vagrant/project
[info] Set current project to wlxjury (in build file:/vagrant/)

--- (Running the application, auto-reloading is enabled) ---

[info] p.c.s.NettyServer - Listening for HTTP on /0:0:0:0:0:0:0:0:9000

(Server started, use Ctrl+D to stop and go back to the console...)

Now open http://localhost:9000

TODO creating root admin

Development

Auto-reloading

Interpreted languages like Python or PHP always run the latest source code that was modified by developer. That is not the case for compiled language like Java or Scala. However Play Framework supports auto-reloading if the source code changes and you try to open some web-page again. On new http request if source code is modified, changed files will be recompiled and the application will be reloaded.

sbt Triggered compilation

The drawback of autoreloading is that recompilation will only happen on new page request. Using Triggered compilation sbt can automatically recompile in the background the moment you save updated source code. To do that run sbt with command ~run

sbt ~run

Application will start and will compile the changes in the background.

You can read more on sbt commands in sbt and Play documentations. Note that Play documentation uses the command activator for Lightbend Activator that comes with full Play distribution or can be downloaded separately, but Activator is build on sbt and you can should run sbt instead of activator (unless you decide to install Activator too)

IDEs

One of the best IDEs for Scala is Intellij IDEA. It has free and open-source Community edition and Scala plugin. Paid (or available for free for open-source project communities like Wikimedia) Ultimate edition also provides additional support for Play Framework features like template and route files.

There are Scala plugins for Eclipse and NetBeans IDEs.

There is also ENSIME project that "brings Scala and Java IDE-like features to your favourite text editor". See the supported features in different text editors like Emacs, Vim or Sublime.

Read more in Play and IntelliJ IDEA documentation. Note that JetBrains IDE documentation on Play support assumes Ultimate edition, but parts of it related to Scala and Sbt features apply also for Community edition.