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.
# File lib/innate/route.rb, line 48 48: def self.[](key) 49: found = self::ROUTES.assoc(key) 50: found[1] if found 51: end
# File lib/innate/route.rb, line 53 53: def self.[]=(key, value) 54: self::ROUTES.delete_if{|route_key, route_value| route_key == key } 55: self::ROUTES << [key, value] 56: end
# File lib/innate/route.rb, line 66 66: def call(env) 67: path = env['PATH_INFO'] 68: path << '/' if path.empty? 69: 70: if modified = resolve(path) 71: Log.debug("%s routes %p to %p" % [self.class.name, path, modified]) 72: env['PATH_INFO'] = modified 73: end 74: 75: @app.call(env) 76: end
# File lib/innate/route.rb, line 78 78: def resolve(path) 79: self.class::ROUTES.each do |key, value| 80: if key.is_a?(Regexp) 81: md = path.match(key) 82: return value % md.to_a[1..1] if md 83: 84: elsif value.respond_to?(:call) 85: new_path = value.call(path, Current.request) 86: return new_path if new_path 87: 88: elsif value.respond_to?(:to_str) 89: return value.to_str if path == key 90: 91: else 92: Log.error("Invalid route %p => %p" % [key, value]) 93: end 94: end 95: 96: nil 97: end
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