我正在研究"如何使用RubyonRails从头开始创建博客"http://sixrevisions.com.该教程是为Rails2.x创建的。我试图让它在Rails3.x上运行。当我运行服务器I并运行localhost:3000时，会出现一些严重的路由错误：
Called from: C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/ac
tion_dispatch/middleware/session/abstract_store.rb:28:in `initialize'.
Exiting
C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dispatch/routing
/mapper.rb:185:in `default_controller_and_action': missing :action (ArgumentError)
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dis
patch/routing/mapper.rb:78:in `normalize_options!'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dis
patch/routing/mapper.rb:61:in `initialize'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dis
patch/routing/mapper.rb:1304:in `new'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dis
patch/routing/mapper.rb:1304:in `add_route'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dis
patch/routing/mapper.rb:1284:in `decomposed_match'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dis
patch/routing/mapper.rb:1270:in `block in match'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dis
patch/routing/mapper.rb:1270:in `each'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dis
patch/routing/mapper.rb:1270:in `match'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dis
patch/routing/mapper.rb:260:in `root'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dis
patch/routing/mapper.rb:1317:in `root'
from D:/myblog/config/routes.rb:5:in `block in <top (required)>'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dis
patch/routing/route_set.rb:282:in `instance_exec'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dis
patch/routing/route_set.rb:282:in `eval_block'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/actionpack-3.2.6/lib/action_dis
patch/routing/route_set.rb:260:in `draw'
from D:/myblog/config/routes.rb:1:in `<top (required)>'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/activesupport-3.2.6/lib/active_
support/dependencies.rb:245:in `load'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/activesupport-3.2.6/lib/active_
support/dependencies.rb:245:in `block in load'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/activesupport-3.2.6/lib/active_
support/dependencies.rb:236:in `load_dependency'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/activesupport-3.2.6/lib/active_
support/dependencies.rb:245:in `load'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic
ation/routes_reloader.rb:40:in `block in load_paths'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic
ation/routes_reloader.rb:40:in `each'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic
ation/routes_reloader.rb:40:in `load_paths'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic
ation/routes_reloader.rb:16:in `reload!'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic
ation/routes_reloader.rb:26:in `block in updater'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/activesupport-3.2.6/lib/active_
support/file_update_checker.rb:78:in `call'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/activesupport-3.2.6/lib/active_
support/file_update_checker.rb:78:in `execute'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic
ation/routes_reloader.rb:27:in `updater'
from C:in `execute_if_updated'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic
ation/finisher.rb:66:in `block in <module:Finisher>'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/initia
lizable.rb:30:in `instance_exec'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/initia
lizable.rb:30:in `run'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/initia
lizable.rb:55:in `block in run_initializers'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/initia
lizable.rb:54:in `each'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/initia
lizable.rb:54:in `run_initializers'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/applic
ation.rb:136:in `initialize!'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/railti
e/configurable.rb:30:in `method_missing'
from D:/myblog/config/environment.rb:5:in `<top (required)>'
from D:/myblog/config.ru:3:in `require'
from D:/myblog/config.ru:3:in `block in <main>'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.4/lib/rack/builder.rb:
51:in `instance_eval'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.4/lib/rack/builder.rb:
51:in `initialize'
from D:/myblog/config.ru:in `new'
from D:/myblog/config.ru:in `<main>'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.4/lib/rack/builder.rb:
40:in `eval'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.4/lib/rack/builder.rb:
40:in `parse_file'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.4/lib/rack/server.rb:2
00:in `app'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/comman
ds/server.rb:46:in `app'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.4/lib/rack/server.rb:3
04:in `wrapped_app'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/rack-1.4.4/lib/rack/server.rb:2
54:in `start'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/comman
ds/server.rb:70:in `start'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/comman
ds.rb:55:in `block in <top (required)>'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/comman
ds.rb:50:in `tap'
from C:/Ruby193/lib/ruby/gems/1.9.1/gems/railties-3.2.6/lib/rails/comman
ds.rb:50:in `<top (required)>'
from script/rails:6:in `require'
from script/rails:6:in `<main>'
当我运行rake路线时，它向我显示了这一点：
rake aborted!
missing :action
D:/myblog/config/routes.rb:5:in `block in <top (required)>'
D:/myblog/config/routes.rb:1:in `<top (required)>'
C:in `execute_if_updated'
D:/myblog/config/environment.rb:5:in `<top (required)>'
Tasks: TOP => routes => environment
(See full trace by running task with --trace)
我的Routes.rb文件：
Myblog::Application.routes.draw do
resources :posts, :has_many => :comments
match ':controller/:action/:id'
match ':controller/:action/:id.:format'
root :to => "post"
end
我知道它相当模糊，但我不知道如何使它更简单。感谢您的帮助&无畏！
您在根url中缺少一个操作，例如。root:to=>"posts#index"
#索引是控制器动作