Add custom route segments.

Author: Michael Bleigh

lib/grape/api.rb

@@ -75,7 +75,7 @@ def compile_path(path)
 
       def route(method, path_info, &block)
         route_set.add_route(build_endpoint(&block), 
-          :path_info => compile_path(path_info), 
+          :path_info => Rack::Mount::Strexp.compile(compile_path(path_info)), 
           :request_method => method
         )
       end

lib/grape/endpoint.rb

@@ -2,13 +2,26 @@
 require 'grape'
 
 module Grape
+  # An Endpoint is the proxy scope in which all routing
+  # blocks are executed. In other words, any methods
+  # on the instance level of this class may be called
+  # from inside a `get`, `post`, etc. block.
   class Endpoint
     def initialize(&block)
       @block = block
     end
 
     attr_reader :env, :request
 
+    def params
+      @params ||= request.params.merge(env['rack.routing_args'] || {}).inject({}) do |h,(k,v)|
+        h[k.to_s] = v
+        h[k.to_sym] = v
+        h
+      end
+    end
+    
+    # Set or retrieve the HTTP status code.
     def status(status = nil)
       if status
         @status = status
@@ -23,6 +36,8 @@ def status(status = nil)
       end        
     end
 
+    # Set an individual header or retrieve
+    # all headers that have been set.
     def header(key = nil, val = nil)
       if key
         val ? @header[key.to_s] = val : @header.delete(key.to_s)

spec/grape/endpoint_spec.rb

@@ -29,4 +29,24 @@ def app; subject end
       last_response.headers['X-Awesome'].should == 'true'
     end
   end
+  
+  describe '#params' do
+    it 'should be available to the caller' do
+      subject.get('/hey') do
+        params[:howdy]
+      end
+      
+      get '/hey?howdy=hey'
+      last_response.body.should == 'hey'
+    end
+    
+    it 'should parse from path segments' do
+      subject.get('/hey/:id') do
+        params[:id]
+      end
+      
+      get '/hey/12'
+      last_response.body.should == '12'
+    end
+  end
 end