Step is a tiny Scala web framework inspired by Sinatra and originally based on some code I found on an awesome blog post.
It could probably use a lot of work; it's my first Scala project. I welcome comments, pull requests, and issues.
package com.thinkminimo.step
class StepExample extends Step {
// send a text/html content type back each time
before() {
contentType = "text/html"
}
// parse matching requests, saving things prefixed with ':' as params
get("/date/:year/:month/:day") {
<ul>
<li>Year: {params("year")}</li>
<li>Month: {params("month")}</li>
<li>Day: {params("day")}</li>
</ul>
}
// produce a simple HTML form
get("/form") {
<form action='/post' method='POST'>
Post something: <input name='submission' type='text'/>
<input type='submit'/>
</form>
}
// handle POSTs from the form generated above
post("/post") {
<h1>You posted: {params("submission")}</h1>
}
// respond to '/' with a greeting
get("/") {
<h1>Hello world!</h1>
}
}
- Install Java
You'll need Java installed; I have it running with 1.5
- Install simple-build-tool
Step uses sbt, a fantastic tool for building Scala programs. For instructions, see [the sbt site](http://code.google.com/p/simple-build-tool/wiki/Setup)
- Run sbt
In the directory you downloaded step to, run `sbt`.
sbt will download core dependencies, and Scala itself if it needs to.
- Download dependencies
At the sbt prompt, type `update`. This will download the Servlet API and Jetty.
- Try it out
At the sbt prompt, type `jetty-run`. This will run step with the example on port 8080.
- Navigate to http://localhost:8080
You should see "Hello world." You can poke around the example code in src/main/scala/StepExample.scala
to see what's going on.
-
before
Run some block before a request is returned.
-
get
Respond to a GET request.
Specify the route to match, with parameters to store prefixed with : like Sinatra. "/match/this/path/and/save/:this" would match that GET request, and provide you with a params("this") in your block.
-
post
Respond to a POST request.
Posted variables are available in the
params
hash. -
delete
Respond to a DELETE request.
-
put
Respond to a PUT request.
While Step can be run standalone, you can also package it up in a .jar for use in other projects. At the sbt prompt, type package
. For more information, see the sbt site
I'd like to thank this awesome dude for the inspirational blog post, and Mark Harrah for help on the sbt mailing list and for creating sbt. Ant+Ivy by itself was a total bitch.
- tests
- docs
- more tests
- regex and 'splat' support ala Sinatra?