Skip to content
This repository

A kick-ass HTTP router for use in Rack

Fetching latest commit…

Cannot retrieve the latest commit at this time

README.md

HTTP Router

What is it?

This is an HTTP router for use in either a web framework, or on it's own using Rack. It takes a set of routes and attempts to find the best match for it. Take a look at the examples directory for how you'd use it in the Rack context.

Features

  • Supports variables, and globbing, both named and unnamed.
  • Regex support for variables.
  • Request condition support.
  • Partial matches.
  • Supports interstitial variables (e.g. /my-:variable-brings.all.the.boys/yard) and unnamed variable /one/:/two
  • Very fast and small code base (~1,000 loc).
  • Sinatra via https://github.com/joshbuddy/http_router_sinatra

Usage

Please see the examples directory for a bunch of awesome rackup file examples, with tonnes of commentary. As well, the rdocs should provide a lot of useful specifics and exact usage.

HttpRouter.new

Takes the following options:

  • :default_app - The default #call made on non-matches. Defaults to a 404 generator.
  • :ignore_trailing_slash - Ignores the trailing slash when matching. Defaults to true.
  • :redirect_trailing_slash - Redirect on trailing slash matches to non-trailing slash paths. Defaults to false.
  • :middleware - Perform matching without deferring to matched route. Defaults to false.

#add(name, options)

Maps a route. The format for variables in paths is: :variable *glob

Everything else is treated literally. Optional parts are surrounded by brackets. Partially matching paths have a trailing *. Optional trailing slash matching is done with /?.

As well, you can escape the following characters with a backslash: ( ) : *

Once you have a route object, use HttpRouter::Route#to to add a destination and HttpRouter::Route#name to name it.

e.g.

r = HttpRouter.new r.add('/test/:variable(.:format)').name(:my_test_path).to {|env| [200, {}, "Hey dude #{env['router.params'][:variable]}"]} r.add('/test').redirect("http://www.google.com/") r.add('/static').static('/my_file_system')

As well, you can support regex matching and request conditions. To add a regex match, use matching(:id => /\d+/). To match on a request condition you can use condition(:request_method => %w(POST HEAD)) or more succinctly request_method('POST', 'HEAD').

There are convenience methods HttpRouter#get, HttpRouter#post, etc for each request method.

Routes will not be recognized unless #to has been called on it.

#url(name or route, *args)

Generates a route. The args can either be a hash, a list, or a mix of both.

#call(env or Rack::Request)

Recognizes and dispatches the request.

#recognize(env or Rack::Request)

Only performs recognition.

Something went wrong with that request. Please try again.