Parent

Innate::Route

Innate support simple routing using string, regex and lambda based routers. Route are stored in a dictionary, which supports hash-like access but preserves order, so routes are evaluated in the order they are added.

This middleware should wrap Innate::DynaMap.

Please note that Rack::File is put before Route and Rewrite, that means that you cannot apply routes to static files unless you add your own route middleware before.

String routers are the simplest way to route in Innate. One path is translated into another:

Innate::Route[ '/foo' ] = '/bar'
  '/foo'  =>  '/bar'

Regex routers allow matching against paths using regex. Matches within your regex using () are substituted in the new path using printf-like syntax.

Innate::Route[ %r!^/(\d+)\.te?xt$! ] = "/text/%d"
  '/123.txt'  =>  '/text/123'
  '/789.text' =>  '/text/789'

For more complex routing, lambda routers can be used. Lambda routers are passed in the current path and request object, and must return either a new path string, or nil.

Innate::Route[ 'name of route' ] = lambda{ |path, request|
  '/bar' if path == '/foo' and request[:bar] == '1'
}
  '/foo'        =>  '/foo'
  '/foo?bar=1'  =>  '/bar'

Lambda routers can also use this alternative syntax:

Innate::Route('name of route') do |path, request|
  '/bar' if path == '/foo' and request[:bar] == '1'
end

NOTE: Use self::ROUTES notation in singleton methods to force correct

lookup.

Constants

ROUTES

Public Class Methods

[](key) click to toggle source
# File lib/innate/route.rb, line 48
def self.[](key)
  found = self::ROUTES.assoc(key)
  found[1] if found
end
[]=(key, value) click to toggle source
# File lib/innate/route.rb, line 53
def self.[]=(key, value)
  self::ROUTES.delete_if{|route_key, route_value| route_key == key }
  self::ROUTES << [key, value]
end
clear() click to toggle source
# File lib/innate/route.rb, line 58
def self.clear
  self::ROUTES.clear
end
new(app = Innate::DynaMap) click to toggle source
# File lib/innate/route.rb, line 62
def initialize(app = Innate::DynaMap)
  @app = app
end

Public Instance Methods

call(env) click to toggle source
# File lib/innate/route.rb, line 66
def call(env)
  path = env['PATH_INFO']
  path << '/' if path.empty?

  if modified = resolve(path)
    Log.debug("%s routes %p to %p" % [self.class.name, path, modified])
    env['PATH_INFO'] = modified
  end

  @app.call(env)
end
resolve(path) click to toggle source
# File lib/innate/route.rb, line 78
def resolve(path)
  self.class::ROUTES.each do |key, value|
    if key.is_a?(Regexp)
      md = path.match(key)
      return value % md.to_a[1..-1] if md

    elsif value.respond_to?(:call)
      new_path = value.call(path, Current.request)
      return new_path if new_path

    elsif value.respond_to?(:to_str)
      return value.to_str if path == key

    else
      Log.error("Invalid route %p => %p" % [key, value])
    end
  end

  nil
end

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