API: ability to get project by id

lib/api/helpers.rb

@@ -5,7 +5,8 @@ module Gitlab
     end
 
     def user_project
-      @project ||= current_user.projects.find_by_code(params[:id])
+      @project ||=  current_user.projects.find_by_id(params[:id]) ||
+                    current_user.projects.find_by_code(params[:id])
     end
 
     def authenticate!

spec/api/projects_spec.rb

@@ -25,11 +25,17 @@ describe Gitlab::API do
 
   describe "GET /projects/:id" do
     it "should return a project by id" do
-      get "#{api_prefix}/projects/#{project.code}?private_token=#{user.private_token}"
+      get "#{api_prefix}/projects/#{project.id}?private_token=#{user.private_token}"
       response.status.should == 200
       json_response['name'].should == project.name
       json_response['owner']['email'].should == user.email
     end
+
+    it "should return a project by code name" do
+      get "#{api_prefix}/projects/#{project.code}?private_token=#{user.private_token}"
+      response.status.should == 200
+      json_response['name'].should == project.name
+    end
   end
 
   describe "GET /projects/:id/repository/branches" do